|
A |
On 15 November your 0913 zone
time fix gives you a position of LAT 22°30.0'N, LONG 68°28.0'W. Your vessel
is on course 164°T, and your speed is 13.5 knots. Local apparent noon (LAN)
occurs at 1118 zone time at which time meridian altitude of the Sun's lower
limb is observed. The observed altitude (Ho) for this sight is 49°46.0'.
What is the calculated latitude at LAN? |
21°39.3'N |
21°37.7'N |
21°40.9'N |
21°36.1'N |
Calculated Latitude
at LAN |
| C |
On 12 February your 0542 zone
time (ZT) fix gives you a position of LAT 26°42.0'N, LONG 60°18.0'W. Your
vessel is on course 300°T, and your speed is 9.8 knots. Local apparent noon
(LAN) occurs at 1220 ZT at which time a meridian altitude of the Sun's lower
limb is observed. The observed altitude (Ho) for this sight is 49°10.0'.
What is the calculated latitude at LAN? |
27°17.6'N |
27°13.5'N |
27°16.3'N |
27°19.2'N |
Calculated Latitude
at LAN |
| D |
On 15 November your 0813 zone
time (ZT) fix gives you a position of LAT 22°30.0'N, LONG 67°28.0'W. Your
vessel is on course 164°T, and your speed is 13.5 knots. Local apparent
noon (LAN) occurs at 1215 ZT, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 49°46.0'.
What is the latitude at 1200 ZT? |
21°39.3'N |
21°32.8'N |
21°36.0'N |
21°42.5'N |
Calculated Latitude
at LAN |
| A |
On 12 September your 0600
zone time (ZT) fix gives you a position of LAT 22°51.9'N, LONG 133°40.1'W.
Your vessel is on course 062°T, and your speed is 12.3 knots. Local apparent
noon (LAN) occurs at 1142 ZT, at which time a meridian altitude of the Sun's
upper limb is observed. The observed altitude (Ho) for this sight is 70°33.2'.
What is the calculated latitude at LAN? |
23°24.8'N |
23°26.5'N |
23°27.9'N |
23°23.0'N |
Calculated Latitude
at LAN |
| D |
On 16 September your 0600
ZT fix gives you a position of LAT 29°47.2'N, LONG 65°28.4'W. Your vessel
is on course 242°T and your speed is 13.5 knots. Local apparent noon (LAN)
occurs at 1227 ZT, at which time a meridian altitude of the Sun's lower
limb is observed. The observed altitude (Ho) for this sight is 63°25.3'.
What is the calculated latitude at LAN? |
29°01.6'N |
29°07.9'N |
29°06.1'N |
29°04.7'N |
Calculated Latitude
at LAN |
| B |
On 22 February your 0612 zone
time fix gives you a position of LAT 27°16.2'S, LONG 37°41.6'W. Your vessel
is on course 298°T, and your speed is 14.2 knots. Local apparent noon (LAN)
occurs at 1147 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 73°33.3'.
What is the calculated latitude at LAN? |
26°24.8'S |
26°31.4'S |
26°27.1'S |
26°29.5'S |
Calculated Latitude
at LAN |
| D |
On 17 December your 0600 ZT
fix gives you a position of LAT 27°16.7'N, LONG 138°39.2'W. Your vessel
is on course 137°T, and your speed is 14.8 knots. Local apparent noon (LAN)
occurs at 1207 ZT, at which time a meridian altitude of the Sun's lower
limb is observed. The observed altitude (Ho) for this sight is 40°22.1'.
What is the calculated latitude at LAN? |
26°11.6'N |
26°09.9'N |
26°13.0'N |
26°15.4'N |
Calculated Latitude
at LAN |
| C |
On 28 July your 0800 zone
time fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your vessel
is on course 026°T, and your speed is 17.5 knots. Local apparent noon (LAN)
occurs at 1149 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'.
What is the calculated latitude at LAN? |
26°23.4'N |
26°21.9'N |
26°25.0'N |
26°27.7'N |
Calculated Latitude
at LAN |
| D |
On 7 November your 0830 zone
time fix gives you a position of LAT 27°36.0'N, LONG 163°19.0'W. Your vessel
is on course 289°T, and your speed is 19.0 knots. Local apparent noon (LAN)
occurs at 1138 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'.
What is the calculated latitude at LAN? |
27°55.1'N |
27°53.4'N |
27°52.3'N |
27°57.2'N |
Calculated Latitude
at LAN |
| A |
On 13 October your 0515 zone
time (ZT) fix gives you a position of LAT 26°53.0'N, LONG 90°05.0'W. Your
vessel is on course 068°T, and your speed is 7.8 knots. Local apparent noon
(LAN) occurs at 1145 zone time, at which time a meridian altitude of the
Sun's lower limb is observed. The observed altitude (Ho) for this sight
is 54°51.5'. What is the calculated latitude at LAN? |
27°12.6'N |
27°15.7'N |
27°16.2'N |
27°14.1'N |
Calculated Latitude
at LAN |
| D |
On 1 July your 0515 ZT fix
gives you a position of LAT 24°36.0'S, LONG 151°42.0'W. Your vessel is on
course 300°T, and your speed is 10.0 knots. Local apparent noon (LAN) occurs
at 1215 ZT, at which time a meridian altitude of the Sun's lower limb is
observed. The observed altitude (Ho) for this sight is 42°55.0'. What is
the calculated latitude at LAN? |
24°03.6'S |
24°00.0'S |
24°02.5'S |
24°01.0'S |
Calculated Latitude
at LAN |
| C |
On 28 July your 0800 zone
time (ZT) fix gives you a position of LAT 25°16.0'N, LONG 71°19.0'W. Your
vessel is on course 026°T, and your speed is 17.5 knots. Local apparent
noon (LAN) occurs at 1150 ZT, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 82°28.7'.
What is the latitude at 1200 ZT? |
26°32.0'N |
26°25.0'N |
26°27.6'N |
26°29.8'N |
Calculated Latitude
at LAN |
| C |
On 7 November your 0830 zone
time fix gives you a position of LAT 27°36.0'N, LONG 162°19.0'W. Your vessel
is on course 289°T and your speed is 19.0 knots. Local apparent noon (LAN)
occurs at 1138 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 45°35.0'.
What is the latitude at 1200 ZT? |
27°55.1'N |
27°57.2'N |
27°59.5'N |
28°01.9'N |
Calculated Latitude
at LAN |
| D |
On 1 July your 0515 zone time
fix gives you a position of LAT 23°24.0'S, LONG 151°42.0'W. Your vessel
is on course 240°T, and your speed is 10.0 knots. Local apparent noon (LAN)
occurs at 1215 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 42°55.0'.
What is the latitude at 1200 ZT? |
24°02.5'S |
24°01.0'S |
23°58.6'S |
23°59.7'S |
Calculated Latitude
at LAN |
| B |
On 13 October your 0515 zone
time fix gives you a position of LAT 26°53.0'N, LONG 90°05.0'W. Your vessel
is on course 068°T, and your speed is 7.8 knots. Local apparent noon (LAN)
occurs at 1145 zone time, at which time a meridian altitude of the Sun's
lower limb is observed. The observed altitude (Ho) for this sight is 54°51.5'.
What is the latitude at 1200 ZT? |
27°16.8'N |
27°13.3'N |
27°15.7'N |
27°14.6'N |
Calculated Latitude
at LAN |
| B |
On 25 February at 0622 ZT,
you observe the upper limb of the Moon with a sextant altitude of 59°58.6'.
Your DR position is LAT 30°28.3'S, LONG 102°39.3 E. The chronometer reading
at the time of the sight is 11h 21m 18s and the chronometer is 48s slow.
The height of eye is 59 feet and the index error is 2.5' on the arc. What
are the azimuth (Zn) and intercept (a) of this sight using the assumed position? |
Zn 305.4°, a 1.5°T |
Zn 305.4°, a 4.2°T |
Zn 234.6°, a 4.2°
A |
Zn 305.4°, a 9.2°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 22 July at 0720 ZT, in
DR position LAT 20°38.2'N, LONG 87°16.0'W, you observe the Moon's lower
limb. The sextant altitude (hs) is 38°32.6, and the chronometer reads 01h
18m 14s. The chronometer is 01m 28s slow. The index error is 3.1' off the
arc, and the height of eye is 68 feet. What is the azimuth (Zn) and intercept
(a) of this sight from the assumed position? |
Zn 111.4°, a 8.7'
A |
Zn 068.6°, a 6.5'
T |
Zn 291.4°, a 5.2'
A |
Zn 248.6°, a 5.0'
T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| B |
On 26 July your 1901 ZT position
is LAT 28°28'N, LONG 157°16'E when you take an observation of Jupiter. The
chronometer at the time of the sight reads 08h 54m 34s and is 06m 24s slow.
The sextant altitude (hs) is 33°51.5'. The index error is 2.8' off the arc,
and the height of eye is 48 feet. What are the azimuth (Zn) and intercept
(a) for this sight using the assumed position? |
Zn 110.8°, a 32.0'
T |
Zn 248.2°, a 34.2'
T |
Zn 290.8°, a 44.2'
A |
Zn 249.2°, a 32.0'
A |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 25 May your vessel's 1917
zone time position is LAT 24°16.0'N, LONG 017°26.0'W. At that time a sextant
observation of the planet Saturn was made. The sextant altitude is 63°05.1',
and the chronometer reads 08h 18m 24s. The index error is 4.5' off the arc,
and the chronometer error is 01m 05s fast. Your height of eye is determined
to be 62.0 feet. What is the azimuth (Zn) of this sight using the assumed
position? |
143.8° |
149.9° |
148.7° |
147.3° |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 25 May your vessel's 1858
zone time position is LAT 21°05.0'N, LONG 143°27.0'E. At that time a sextant
observation of the planet Venus was made. The sextant altitude is 12°53.4'
and the chronometer reads 08h 59m 15s. The index error is 4.5' off the arc,
and the chronometer error is 01m 25s fast. Your height of eye is determined
to be 55.0 feet. What is the azimuth (Zn) of the sight using the assumed
position? |
290.4°T |
110.4°T |
249.6°T |
069.6°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 26 May your vessel's 1906
zone time position is LAT 27°16.0'N, LONG 24°37.0'W. At that time, a sextant
observation of the planet Jupiter was made. The sextant altitude is 63°27.6',
and the chronometer reads 09h 05m 16s. The index error is 5.2' on the arc,
and the chronometer error is 01m 25s slow. Your height of eye is determined
to be 52.6 feet. What is the (Zn) of this sight using the assumed position? |
191.3°T |
011.3°T |
348.7°T |
168.7°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 28 April your vessel's
0515 zone time position is LAT 23°26'S, LONG 95°30'E. At this time, the
observed altitude (Ho) of the star Rigil Kentaurus is 24°51.4'. Your chronometer
reads 11h 16m 36s and is 01m 18s fast. What is the intercept (a) based on
the assumed position method? |
34.4 miles |
30.9 miles |
33.1 miles |
32.3 miles |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| C |
On 17 April your vessel's
1856 zone time DR position is LAT 22°35.0'N, LONG 63°15.0'W. At that time,
a sextant observation of the star Sirius is made. The sextant altitude is
42°45.0' and the chronometer reads 10h 59m 27s. The index error is 2.6'
off the arc, and the chronometer error is 03m 01s fast. Your height of eye
is determined to be 45 feet. What is the computed altitude (Hc) and azimuth
(Zn) for this sight using the assumed position? |
42°40.0', 214.9°T |
42°40.0', 325.1°T |
42°51.6', 214.9°T |
42°51.6', 325.1°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 16 June 0612 zone time,
morning stars were observed. The vessel's position was LAT 27°23.0'S, LONG
56°22.0'W. The vessel is steaming at 16.0 knots on a course of 212°T. A
sextant observation of the Sun's lower limb is made at 0850 zone time. The
chronometer reads 00h 53m 19s, and the sextant altitude is 22°58.6'. The
index error is 2.0' off the arc, and the chronometer error is 02m 43s fast.
Your height of eye is 61.0 feet. What is the azimuth (Zn) of this sight
using the assumed position? |
044.3° |
052.6° |
136.1° |
148.4° |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 25 June at 0612 zone time,
morning stars were observed, and the vessel's position was determined to
be LAT 28°13.0'S, LONG 49°34.0'E. Your vessel is steaming at 17.0 knots
on a course of 066°T. A sextant observation of the Sun's lower limb is made
at 1022 zone time. The chronometer reads 07h 19m 17s, and the sextant altitude
is 35°26.3'. The index error is 1.5' on the arc, and the chronometer error
is 02m 51s slow. Your height of eye on the bridge is 58.0 feet. What is
the azimuth (Zn) of this sight using the assumed position? |
021.5°T |
157.5°T |
201.5°T |
338.5°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| C |
On 5 April at 0509 zone time,
morning stars were observed and the vessel's position was LAT 28°32'N, LONG
177°13.0'W. Your vessel is steaming at 19.0 knots on a course of 258°T.
A sextant observation of the Sun's lower limb is made at 1021 zone time.
The chronometer reads 10h 20m 09s, and the sextant altitude (hs) is 58°06.6'.
The index error is 1.0' off the arc, and the chronometer error is 00m 54s
slow. Your height of eye on the bridge is 55.0 feet. What is the azimuth
(Zn) of this sight using the assumed position? |
125.8°T |
128.8°T |
129.2°T |
130.2°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 1 April at 0515 zone time,
morning stars were observed, and the vessel's position was determined to
be LAT 27°05.0'N, LONG 16°30.0'W. Your vessel is steaming at 19.0 knots
on a course of 022°T. A sextant observation of the Sun's lower limb is made
at 0930 zone time. The chronometer reads 10h 28m 25s, and the sextant altitude
is 46°20.3'. The index error is 4.5' off the arc, and the chronometer error
is 02m 15s slow. Your height of eye on the bridge is 57.0 feet. What is
the azimuth (Zn) of this sight using the assumed position? |
115.0°T |
117.9°T |
121.6°T |
112.2°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 6 March at 0550 zone time,
morning stars were observed, and the vessel's position was determined to
be LAT 23°56.0'N, LONG 27°19.0'W. Your vessel is steaming at 25.0 knots
on a course of 149.0°T. A sextant observation of the Sun's lower limb is
made at 0830 zone time. The chronometer reads 10h 32m 05s, and the sextant
altitude is 31°31.5'. The index error is 2.5' on the arc, and the chronometer
error is 01m 45s fast. Your height of eye on the bridge is 76.0 feet. What
is the azimuth (Zn) of this sight using the assumed position? |
112.8°T |
111.2°T |
114.3°T |
109.8°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 10 January at 0550 ZT,
morning stars were observed, and the vessel's position was determined to
be LAT 25°16.0'N, LONG 123°18.0'W. Your vessel is steaming at 22.0 knots
on a course of 295°T. A sextant observation of the Sun's lower limb is made
at 0915 ZT. The chronometer reads 05h 14m 02s, and the sextant altitude
is 24°00.7'. The index error is 2.6' off the arc, and the chronometer error
is 01m 34s slow. Your height of eye on the bridge is 55.0 feet. What is
the azimuth (Zn) of this sight using the assumed position? |
127.8°T |
129.8°T |
133.6°T |
131.9°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 4 July at 0630 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
21°15.0'S, LONG 21°20.0'W. Your vessel is steaming at 13.0 knots on a course
of 146°T. A sextant observation of the Sun's lower limb is made at 0915
ZT. The chronometer reads 10h 14m 27s, and the sextant altitude is 25°29.8'.
The index error is 3.1' off the arc, and the chronometer error is 0m 53s
slow. Your height of eye on the bridge is 48.0 feet. What is the azimuth
(Zn) of this sight using the assumed position? |
049.5°T |
058.9°T |
054.3°T |
052.6°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 22 July at 0448 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
21°43.0'N, LONG 158°39.0'E. Your vessel is steaming at 21.0 knots on a course
of 028°T. A sextant observation of the Sun's lower limb is made at 0956
ZT. The chronometer reads 10h 54m 27s, and the sextant altitude is 54°28.2'.
The index error is 1.5' off the arc, and the chronometer error is 01m 38s
slow. Your height of eye on the bridge is 56 feet. What is the azimuth (Zn)
of this sight using the assumed position? |
086.9°T |
084.2°T |
080.9°T |
082.2°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| B |
At 0600 ZT on 24 July your
DR position is LAT 22°37'N, LONG 32°45'W. You are steering 185°T at a speed
of 20.0 knots. Determine the computed altitude (Hc) and azimuth (Zn) for
an observation of the Sun's lower limb taken at 1030 ZT. At this time the
chronometer reads 00h 30m 16s and is 0m 31s slow. |
Hc 64°44.2' Zn
094.7° |
Hc 64°41.7' Zn
087.8° |
Hc 64°30.8' Zn
090.1° |
Hc 64°27.5' Zn
092.3° |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
At 0800 ZT on 29 June your
DR position is LAT 26°00.0'N, LONG 75°29.5'W. Given a chronometer time of
01h 00m 00s, determine the computed altitude (Hc) of the Sun for the assumed
position nearest to the above given latitude and longitude. |
Hc 34°48.6' |
Hc 35°18.6' |
Hc 34°38.6' |
Hc 34°58.6' |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 8 August at 0545 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
26°16.0' S, LONG 94°16.0'E. Your vessel is steaming at 20.0 knots on a course
of 346°T. A sextant observation of the Sun's lower limb is made at 0905
ZT. The chronometer reads 03h 02m 52s, and the sextant altitude (hs) is
38°07.5'. The index error is 5.2' off the arc, and the chronometer error
is 2m 17s slow. Your height of eye on the bridge is 72 feet (22.0 meters).
What is the observed altitude (Ho) and azimuth (Zn) of this sight using
the assumed position? |
38°19.4', 048.4°T |
38°54.9', 048.4°T |
38°19.4', 131.6°T |
38°54.9', 131.6°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 11 October at 0516 ZT,
morning stars were observed, and the vessel's position was determined to
be LAT 23°21.0'N, LONG 139°27.0'W. Your vessel is steaming at 14.0 knots
on a course of 293°T. A sextant observation of the Sun's lower limb is made
at 0927 ZT. The chronometer reads 06h 30m 21s, and the sextant altitude
(hs) is 39°48.7'. The index error is 2.0' on the arc, and the chronometer
error is 02m 56s fast. Your height of eye on the bridge is 63.0 feet. What
is the azimuth (Zn) of this sight using the assumed position? |
128.4°T |
126.2°T |
116.2°T |
123.4°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 18 October at 0518 ZT,
morning stars were observed and the vessel's position was determined to
be LAT 25°31.0'N, LONG 146°29.2'E. Your vessel is steaming at 19.0 knots
on a course of 308°T. A sextant observation of the Sun's lower limb is made
at 0915 ZT. The chronometer reads 11h 17m 11s, and the sextant altitude
(hs) is 34°51.4'. The index error is 2.0' off the arc, and the chronometer
error is 01m 57s fast. Your height of eye on the bridge is 54.0 feet. What
is the azimuth (Zn) of this sight using the assumed position? |
125.5°T |
121.9°T |
120.6°T |
127.3°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 13 November at 0438 ZT,
morning stars were observed and the vessel's position was determined to
be LAT 22°14.0'S, LONG 79°23.0'E. Your vessel is steaming at 13.0 knots
on a course of 242°T. A sextant observation of the Sun's lower limb is made
at 0822 ZT. The chronometer reads 03h 20m 16s, and the sextant altitude
(hs) is 45°49.7'. The index error is 1.0' on the arc, and the chronometer
error is 01m 47s slow. Your height of eye on the bridge is 61.0 feet (18.6
meters). What is the azimuth (Zn) of this sight using the assumed position? |
092.6°T |
096.2°T |
098.7°T |
099.7°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 9 November at 0426 ZT,
your position was LAT 25°17.0'S, LONG 154°16.0'E. Your vessel is steaming
at 14.0 knots on course 066°T. A sextant observation of the Sun's lower
limb is made at 0837 ZT. The chronometer reads 10h 35m 21s, and the sextant
altitude (hs) is 50°26.9'. The index error is 1.5' on the arc, and the chronometer
error is 01m 48s slow. Your height of eye on the bridge is 56.0 feet. What
is the observed altitude (Ho) and azimuth (Zn) of this sight using the assumed
position? |
50°18.1', 086.3°T |
50°33.5', 093.7°T |
50°18.1', 093.7°T |
50°33.5', 085.9°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 21 November at 0430 ZT,
morning stars were observed, and the vessel's position was LAT 22°14.0'S,
LONG 79°23.0'E. Your vessel is steaming at 14.5 knots on a course of 246°T.
A sextant observation of the Sun's lower limb is made at 0816 ZT. The chronometer
reads 03h 14m 16s, and the sextant altitude (hs) is 44°29.2'. The index
error is 1.0' on the arc, and the chronometer error is 01m 47s slow. Your
height of eye is 61.0 feet (18.6 meters). What is the azimuth (Zn) and intercept
(a) of this sight using the assumed position method? |
Zn 084.2°, a 6.6'
T |
Zn 095.6°, a 6.6'
A |
Zn 084.2°, a 6.6'
A |
Zn 095.6°, a 6.6'
T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| B |
On 22 June at 0906 EDT (ZD
+4), your position is LAT 24°36'N, LONG 69°30'W. You are on course 165°pgc
at a speed of 14.8 knots. A sextant observation of the Sun's lower limb
is made, and the sextant altitude (hs) is 42°44.0' with an index error of
0.8' off the arc. At this time the chronometer reads 01h 10m 12s, and is
2m 42s slow. If your height of eye is 70 feet, what is the azimuth (Zn)
of the sight using the assumed position? |
Zn 081.6° |
Zn 080.4° |
Zn 129.0° |
Zn 130.5° |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| D |
On 12 April at 0515 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
21°05'S, LONG 16°30'W. Your vessel is steaming at 19 knots on a course of
278°T. A sextant observation of the Sun's lower limb is made at 0930 ZT.
The chronometer reads 10h 28m 25s, and the sextant altitude (hs) is 40°15.9'.
The index error is 2.5' off the arc, and the chronometer error is 2m 15s
slow. Your height of eye on the bridge is 57 feet. What are the intercept
(a) and azimuth (Zn) from the assumed position of this sight? |
Zn 122.3°, a 17.7'
A
|
Zn 123.0°, a 22.7'
A
|
Zn 057.7°, a 15.4'
T
|
Zn 057.0°, a 17.7'
A |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 30 June at 0630 zone time,
morning stars were observed, and the vessel's position was determined to
be LAT 25°15.0'S, LONG 175°36.0'E. Your vessel is steaming at 16.0 knots
on a course of 302°T. A sextant observation of the Sun's lower limb is made
at 1015 zone time. The chronometer reads 10h 14m 38s, and the sextant altitude
is 32°07.9'. The index error is 4.5' on the arc, and the chronometer error
is 01m 25s slow. Your height of eye on the bridge is 58.0 feet. What is
the azimuth (Zn) of this sight using the assumed position? |
035.3°T |
144.7°T |
248.5°T |
186.5°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| C |
On 4 June at 0630 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
26°15'S, LONG 121°20'W. Your vessel is steaming at 13.0 knots on a course
of 246°T. A sextant observation of the Sun's lower limb is made at 0915
ZT. The chronometer reads 05h 14m 27s, and the sextant altitude is 25°57.8'.
The index error is 2.1' off the arc, and the chronometer error is 0m 53s
slow. Your height of eye is 39.0 feet. What is the intercept (a) and azimuth
(Zn) of this sight using the assumed position method? |
Zn 135.1°, a 1.7'
A |
Zn 044.6°, a 1.7'
A |
Zn 044.6°, a 2.5'
T |
Zn 135.1°, a 2.5'
T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
On 18 August at 0600 ZT, morning
stars were observed, and the vessel's position was determined to be LAT
19°48'N, LONG 108° 34'W. Your vessel is steaming on course 166°T at a speed
of 16 knots. An observation of the Sun's lower limb is made at 1036 ZT.
The chronometer reads 05h 34m 48s and is slow 01m 24s. What is the computed
altitude (Hc) and azimuth (Zn) for this 1036 ZT observation using the assumed
position method? |
Hc 65°14.8', Zn
100.4° |
Hc 65°07.2', Zn
101.2° |
Hc 65°11.3', Zn
099.4° |
Hc 65°18.5', Zn
102.1° |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| C |
At 1000 ZT 21 October your
DR position is LAT 29°00'N, LONG 134°40'E. Determine the computed altitude
(Hc) of the Sun for the assumed position nearest to the above given latitude
and longitude, given a chronometer time of 01h 00m 00s. |
Hc 42°30.6' |
Hc 42°34.2' |
Hc 42°35.7' |
Hc 42°32.1' |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| A |
At 1300 ZT on 9 May your DR
position is LAT 24°00'N, LONG 83°26'W. Determine the computed altitude (Hc)
of the Sun for the assumed position nearest to the above given latitude
and longitude, given a chronometer time of 07h 00m 00s. |
Hc 68°26.6' |
Hc 68°22.8' |
Hc 68°24.1' |
Hc 68°25.2' |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| C |
On 17 May at 0501 zone time,
morning stars were observed, and the vessel's position was determined to
be LAT 22°16.0'S, LONG 103°46.0'W. Your vessel is steaming at 24.0 knots
on a course of 301°T. A sextant observation of the Sun's lower limb is made
at 0845 zone time. The chronometer reads 03h 43m 32s, and the sextant altitude
is 28°24.7'. The index error is 1.5' off the arc, and the chronometer error
is 02m 02s slow. Your height of eye on the bridge is 85.5 feet. What is
the azimuth (Zn) of this sight using the assumed position? |
055.7°T |
051.0°T |
052.5°T |
054.2°T |
Intercept (a)
and Azimuth (Zn) from Assumed Position |
| B |
On 22 November your vessel
is enroute from Accra, Ghana to Montevideo, Uruguay. You are on course 240°T
and making a speed of 15.0 knots. Your 1129 DR position is LAT 28°25.0'
S, LONG 42°40.0' W. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1137 running fix. (See Navigation Problems Question
Tables NP-0023 Below) |
LAT 28°23.4'S,
LONG 42°42.0'W |
LAT 28°27.0'S,
LONG 42°38.0'W |
LAT 28°25.2'S,
LONG 42°40.0'W |
LAT 28°25.0'S,
LONG 42°36.0'W |
Running Fix (Problems
with NP Tables) |
| B |
On 20 November your 1030 ZT
DR position is LAT 27°16.0' N, LONG 157°18.6' E. You are on course 060°T
at a speed of 20 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1200 running fix. (See Navigation Problems Question
Tables NP-0012 Below) |
LAT 27°33.4'N,
LONG 157°48.2'E |
LAT 27°29.7'N,
LONG 157°43.0'E |
LAT 27°22.6'N,
LONG 157°37.8'E |
LAT 27°16.8'N,
LONG 157°30.5'E |
Running Fix (Problems
with NP Tables) |
| D |
On 4 December your 1500 ZT
DR position is LAT 18°06.0' N, LONG 75°42.0' W. You are on course 020°T
at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the
latitude and longitude of your 1548 running fix. (See Navigation Problems
Question Tables NP-0014 Below) |
LAT 18°14.0'N,
LONG 75°40.0'W |
LAT 18°10.3'N,
LONG 75°34.5'W |
LAT 18°12.6'N,
LONG 75°42.0'W |
LAT 18°17.3'N,
LONG 75°37.7'W |
Running Fix (Problems
with NP Tables) |
| A |
On 25 March your 0500 ZT DR
position is LAT 28°14.0' S, LONG 93°17.0' E. You are on course 291°T at
a speed of 16.0 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0550 running fix. (See Navigation Problems Question
Tables NP-0006 Below) |
LAT 28°15.9'S,
LONG 92°56.9'E |
LAT 28°06.4'S,
LONG 93°02.5'E |
LAT 28°19.3'S,
LONG 92°59.0'E |
LAT 27°53.2'S,
LONG 93°17.6'E |
Running Fix (Problems
with NP Tables) |
| D |
On 15 July your vessel is
enroute from Portland, OR, to Singapore, Malaysia. You are steering course
243°T and making a speed of 16 knots. Your 1845 zone time DR is LAT 27°42.0'
N, LONG 167°02.0' E. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1945 running fix. (See Navigation Problems Question
Tables NP-0016 Below) |
LAT 28°18.1'N,
LONG 166°39.8'E |
LAT 27°38.5'N,
LONG 166°45.1'E |
LAT 27°45.3'N,
LONG 166°32.2'E |
LAT 27°31.1'N,
LONG 166°43.0'E |
Running Fix (Problems
with NP Tables) |
| A |
On 15 August your vessel is
enroute from Bombay, India, to San Francisco, CA. You are steering course
020°T and making a speed of 20.0 knots. Your 1830 zone time DR is LAT 26°13.0'
N, LONG 135°18.0' W. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1935 running fix. (See Navigation Problems Question
Tables NP-0017 Below) |
LAT 26°48.1'N,
LONG 135°20.7'W |
LAT 26°15.9'N,
LONG 135°03.6'W |
LAT 26°35.3'N,
LONG 135°24.8'W |
LAT 26°40.5'N,
LONG 135°21.6'W |
Running Fix (Problems
with NP Tables) |
| D |
At 1830 zone time, on 6 April
your DR position is LAT 26°33.0' N, LONG 64°31.0' W. You are steering course
082°T at a speed of 16.0 knots. You observed 3 celestial bodies. Determine
the latitude and longitude of your 1900 running fix. (See Navigation Problems
Question Tables NP-0019 Below) |
LAT 26°28.4'N,
LONG 64°32.1'W |
LAT 26°23.7'N,
LONG 64°29.3'W |
LAT 26°20.1'N,
LONG 64°19.4'W |
LAT 26°32.5'N,
LONG 64°27.1'W |
Running Fix (Problems
with NP Tables) |
| B |
At 0450 zone time, on 25 June,
your DR position is LAT 21°26.0'N, LONG 160°24.5'W. You are steering course
100°T at a speed of 10 knots. You observed 3 celestial bodies. Determine
the latitude and longitude of your 0514 running fix? (See Navigation Problems
Question Tables NP-0020 Below) |
LAT 21°20.0'N,
LONG 160°15.5'W |
LAT 21°25.0'N,
LONG 160°18.0'W |
LAT 21°27.0'N,
LONG 160°17.0'W |
LAT 21°22.0'N,
LONG 160°17.0'W |
Running Fix (Problems
with NP Tables) |
| D |
On 10 August, your 0430 ZT
position is LAT 29°56.7'S, LONG 139°11.0'E. Your course is 321°T, speed
18.2 knots. You observed 3 celestial bodies. Determine the latitude and
longitude of your 0500 running fix? NP-0021 |
LAT 30°07.5'S,
LONG 138°55.2'E |
LAT 29°56.0'S,
LONG 139°03.8'E |
LAT 29°46.0'S,
LONG 138°54.0'E |
LAT 29°49.2'S,
LONG 138°57.0'E |
Running Fix (Problems
with NP Tables) |
| D |
On 3 April your vessel's 1400
ZT DR position is LAT 20°08.0' N, LONG 147°45.0' W. You are steering course
023°T at 18.0 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1900 running fix. (See Navigation Problems Question
Tables NP-0022 Below) |
LAT 21°39.8'N,
LONG 146°59.7'W |
LAT 21°41.8'N,
LONG 147°01.5'W |
LAT 21°41.8'N,
LONG 147°05.5'W |
LAT 21°40.0'N,
LONG 147°03.2'W |
Running Fix (Problems
with NP Tables) |
| B |
On 12 October your vessel
is on course 081°T, speed 20 knots. Your 1800 zone time DR position is LAT
26°11.0' S, LONG 77°18.0' E. You observed 3 celestial bodies. Determine
the latitude and longitude of your 1835 running fix. (See Navigation Problems
Question Tables NP-0024 Below) |
LAT 26°05.5'S,
LONG 77°14.5'E |
LAT 26°12.0'S,
LONG 77°31.0'E |
LAT 26°07.5'S,
LONG 77°34.0'E |
LAT 26°09.0'S,
LONG 77°27.5'E |
Running Fix (Problems
with NP Tables) |
| A |
On 25 October your 0430 ZT
DR position is LAT 24°48' N, LONG 65°31' W. Your vessel is on course 030°T
at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0455 running fix. (See Navigation Problems Question
Tables NP-0025 Below) |
LAT 24°53'N, LONG
65°28'W |
LAT 24°53'N, LONG
65°12'W |
LAT 24°54'N, LONG
65°17'W |
LAT 25°03'N, LONG
65°18'W |
Running Fix (Problems
with NP Tables) |
| C |
On 6 April your 1830 ZT DR
position is LAT 26°33.0' N, LONG 64°31.0' W. You are on course 082°T at
a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1900 running fix. (See Navigation Problems Question
Tables NP-0008 Below) |
LAT 26°28.7'N,
LONG 64°32.1'W |
LAT 26°49.5'N,
LONG 64°06.5'W |
LAT 26°32.5'N,
LONG 64°27.1'W |
LAT 26°31.2'N,
LONG 64°32.1'W |
Running Fix (Problems
with NP Tables) |
| B |
On 24 October your 0100 DR
position is LAT 27°42' N, LONG 158°35' E. You are on course 085°T at a speed
of 12 knots. You observed 3 celestial bodies. Determine the latitude and
longitude of your 0700 running fix. (See Navigation Problems Question Tables
NP-0026 Below) |
LAT 27°58.4'N,
LONG 159°43.5'E |
LAT 27°56.0'N,
LONG 159°47.3'E |
LAT 27°48.8'N,
LONG 160°12.5'E |
LAT 27°52.5'N,
LONG 160°18.2'E |
Running Fix (Problems
with NP Tables) |
| D |
On 9 November your 0400 DR
position is LAT 18°24.0' S, LONG 97°36.0' W. You are on course 138°T at
a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0600 running fix. (See Navigation Problems Question
Tables NP-0027 Below) |
LAT 19°15.5'S,
LONG 98°08.8'W |
LAT 18°52.5'S,
LONG 97°10.6'W |
LAT 18°15.0'S,
LONG 98°52.5'W |
LAT 18°45.0'S,
LONG 97°06.8'W |
Running Fix (Problems
with NP Tables) |
| C |
On 19 September your 0300
zone time DR position is LAT 24°35' N, LONG 88°40' W. You are on course
288°T at a speed of 14 knots. You observed 3 celestial bodies. Determine
the latitude and longitude of your 0600 running fix. (See Navigation Problems
Question Tables NP-0028 Below) |
LAT 24°47.4'N,
LONG 89°15.0'W |
LAT 24°59.5'N,
LONG 89°28.6'W |
LAT 24°52.5'N,
LONG 89°22.4'W |
LAT 25°06.0'N,
LONG 90°37.0'W |
Running Fix (Problems
with NP Tables) |
| A |
On 6 April your 0300 DR position
is LAT 27°42' S, LONG 128°58' W. You are on course 097°T at a speed of 18
knots. You observed 3 celestial bodies. Determine the latitude and longitude
of your 0600 running fix. (See Navigation Problems Question Tables NP-0029
Below) |
LAT 27°44.7'S,
LONG 127°47.5'W |
LAT 27°52.4'S,
LONG 127°49.4'W |
LAT 28°15.2'S,
LONG 128°11.6'W |
LAT 27°15.5'S,
LONG 128°12.4'W |
Running Fix (Problems
with NP Tables) |
| D |
On 19 November your 0200 zone
time DR position is LAT 18°41' N, LONG 150°37' E. You are on course 014°T
at a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0600 running fix. (See Navigation Problems Question
Tables NP-0031 Below) |
LAT 19°42.8'N,
LONG 150°56.9'E |
LAT 19°41.2'N,
LONG 150°46.3'E |
LAT 19°39.3'N,
LONG 150°51.8'E |
LAT 19°45.4'N,
LONG 150°52.6'E |
Running Fix (Problems
with NP Tables) |
| C |
On 25 August your 0300 zone
time DR position is LAT 21°28.0' N, LONG 167°48.0' E. You are on course
248°T at a speed of 12 knots. You observed 3 celestial bodies. Determine
the latitude and longitude of your 0600 running fix. (See Navigation Problems
Question Tables NP-0032 Below) |
LAT 21°06.0'N,
LONG 167°10.9'E |
LAT 20°59.5'N,
LONG 166°54.8'E |
LAT 20°57.1'N,
LONG 167°01.0'E |
LAT 20°52.4'N,
LONG 167°32.1'E |
Running Fix (Problems
with NP Tables) |
| A |
On 19 November your 0200 zone
time DR position is LAT 20°29.0' N, LONG 150°21.3' E. You are on course
136°T at a speed of 18 knots. You observed 3 celestial bodies. Determine
the latitude and longitude of your 0600 running fix. (See Navigation Problems
Question Tables NP-0033 Below) |
LAT 19°33.0'N,
LONG 151°10.0'E |
LAT 19°30.1'N,
LONG 151°06.0'E |
LAT 19°35.8'N,
LONG 151°13.6'E |
LAT 19°31.7'N,
LONG 151°04.9'E |
Running Fix (Problems
with NP Tables) |
| D |
On 28 May your 0200 DR position
is LAT 19°16.5' S , LONG 119°24.0' W. You are on course 107°T at a speed
of 18 knots. You observed 3 celestial bodies. Determine the latitude and
longitude of your 0600 running fix. (See Navigation Problems Question Tables
NP-0034 Below) |
LAT 20°17.1'S,
LONG 118°06.0'W |
LAT 20°07.5'S,
LONG 117°32.0'W |
LAT 19°48.2'S,
LONG 118°04.5'W |
LAT 19°43.0'S,
LONG 117°54.0'W |
Running Fix (Problems
with NP Tables) |
| A |
On 12 December your 1830 ZT
DR position is LAT 24°16.0' S, LONG 41°18.0' W. You are on course 235°T
at a speed of 16.0 knots. You observed 3 celestial bodies. Determine the
latitude and longitude of your 1930 running fix. (See Navigation Problems
Question Tables NP-0009 Below) |
LAT 24°16.9'S,
LONG 41°18.2'W |
LAT 27°46.9'S,
LONG 41°31.2'W |
LAT 24°12.5'S,
LONG 41°10.9'W |
LAT 24°25.2'S,
LONG 41°39.9'W |
Running Fix (Problems
with NP Tables) |
| B |
On 16 April your 0200 zone
time DR position is LAT 17°18' S, LONG 168°46' E. You are on course 236°T
at a speed of 16 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0600 running fix. (See Navigation Problems Question
Tables NP-0036 Below) |
LAT 17°54.9'S,
LONG 167°48.7'E |
LAT 18°00.4'S,
LONG 167°49.2'E |
LAT 17°55.6'S,
LONG 167°45.1'E |
LAT 17°56.8'S,
LONG 167°52.4'E |
Running Fix (Problems
with NP Tables) |
| B |
On 5 May your 1600 zone time
DR position is LAT 17°28' S, LONG 143°39' E. You are on course 316°T at
a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 1800 running fix. (See Navigation Problems Question
Tables NP-0038 Below) |
LAT 17°07.8'S,
LONG 143°17.5'E |
LAT 17°05.2'S,
LONG 143°11.4'E |
LAT 17°08.2'S,
LONG 143°07.9'E |
LAT 17°09.7'S,
LONG 143°10.1'E |
Running Fix (Problems
with NP Tables) |
| A |
On 19 November your 0300 zone
time DR position is LAT 19°23' N, LONG 151°37' E. You are on course 293°T
at a speed of 17 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0600 running fix. (See Navigation Problems Question
Tables NP-0039 Below) |
LAT 19°34.8'N,
LONG 150°48.0'E |
LAT 19°32.9'N,
LONG 150°52.3'E |
LAT 19°30.5'N,
LONG 150°48.5'E |
LAT 19°38.5'N,
LONG 150°41.6'E |
Running Fix (Problems
with NP Tables) |
| C |
On 20 February your 0530 ZT
DR position is LAT 24°15.0'N, LONG 137°33.0'W. You are on course 033°T at
a speed of 18 knots. You observed 3 celestial bodies. Determine the latitude
and longitude of your 0600 running fix. (See Navigation Problems Question
Tables NP-0010 Below) |
LAT 24°26.0'N,
LONG 137°25.8'W |
LAT 24°30.1'N,
LONG 137°24.5'W |
LAT 24°27.5'N,
LONG 137°31.8'W |
LAT 24°23.3'N,
LONG 137°35.5'W |
Running Fix (Problems
with NP Tables) |
| C |
On 14 September your 1810
ZT DR position is LAT 27°12.0' S, LONG 71°10.0' E. You are on course 060°T
at a speed of 15.0 knots. You observed 3 celestial bodies. Determine the
latitude and longitude of your 1822 running fix. (See Navigation Problems
Question Tables NP-0011 Below) |
LAT 27°09.2'S,
LONG 71°11.3'E |
LAT 27°04.5'S,
LONG 71°22.4'E |
LAT 27°11.0'S,
LONG 71°14.5'E |
LAT 27°07.5'S,
LONG 71°18.6'E |
Running Fix (Problems
with NP Tables) |
| D |
On 18 May your 1030 ZT DR
position is LAT 20°41'N, LONG 63°32'W. You are on course 106°T, speed 24
knots. Determine your 1200 position using the following observations of
the Sun.
{{{
Zone Time
GHA
Declination
Ho
1204
61°54.6'
N 19°37.6' 88°39.7'
1210
63°24.6'
N 19°37.7' 88°59.2'}}} |
LAT 18°38.7'N,
LONG 62°59.2'W |
LAT 18°33.6'N,
LONG 62°54.3'W |
LAT 18°35.2'N,
LONG 62°49.7'W |
LAT 18°41.1'N,
LONG 62°53.9'W |
Fix or Running
Fix. Sun |
| A |
On 26 July your 1030 ZT DR
position is LAT 18°25'N, LONG 51°15'W. You are on course 231°T, speed 15
knots. Determine your 1200 position using the following observations of
the Sun.
{{{
(5.1.4.1-2)
ZT
GHA
DECLINATION
Ho
1228 50°23.5'
N 19°21.9' 88°14.3'
1236 52°23.5'
N 19°21.8' 88°29.0'}}} |
LAT 18°07.2'N,
LONG 51°30.4'W |
LAT 18°00.9'N,
LONG 51°31.9'W |
LAT 18°10.6'N,
LONG 51°25.1'W |
LAT 18°03.5'N,
LONG 51°36.2'W |
Fix or Running
Fix. Sun |
| A |
On 13 November your 1030 ZT
DR position is LAT 19°03'S, LONG 6°34'E. You are on course 164°T, speed
12 knots. Determine your 1200 position using the following observations
of the Sun.
5.1.4.1-3
{{{
ZT
GHA
DECLINATION
Ho
1112 351°55.4'
S 18°00.4' 88°08.0'
1121 354°10.4'
S 18°00.5' 88°33.9'}}} |
LAT 19°22.3'S,
LONG 6°37.8'E |
LAT 19°15.8'S,
LONG 6°36.8'E |
LAT 19°17.6'S,
LONG 6°39.2'E |
LAT 19°20.1'S,
LONG 6°41.4'E |
Fix or Running
Fix. Sun |
| C |
On 15 November your 1030 ZT
DR position is LAT 17°25'S, LONG 42°12'W. You are on course 059°T, speed
22 knots. Determine your 1200 position using the following observations
of the Sun.
{{{
ZT
GHA
DECLINATION Ho
1128 40°50.4'
S 18°33.6' 88°18.4'
1133 42°05.4'
S 18°33.6' 88°37.7}}} |
LAT 17°02.1'S,
LONG 41°48.4'W |
LAT 17°08.9'S,
LONG 41°40.4'W |
LAT 17°06.8'S,
LONG 41°44.3'W |
LAT 17°00.0'S,
LONG 41°45.8'W |
Fix or Running
Fix. Sun |
| B |
On 15 November your 1030 ZT
DR position is LAT 19°41'S, LONG 41°37'W. You are on course 239°T, speed
22 knots. Determine your 1200 position using the following observations
of the Sun.
{{{
(5.1.4.1-5)
ZT
GHA DECLINATION
Ho
1128 40°50.4'
S 18°33.6' 88°18.4'
1133 42°05.4'
S 18°33.6' 88°37.7'}}} |
LAT 20°04.3'S,
LONG 42°09.8'W |
LAT 20°01.0'S,
LONG 42°05.9'W |
LAT 20°06.7'S,
LONG 42°06.1'W |
LAT 20°08.1'S,
LONG 42°00.7'W |
Fix or Running
Fix. Sun |
| D |
On 18 May your 1030 ZT DR
position is LAT 20°41'N, LONG 63°32'W. You are on course 106°T, speed 24
knots. Determine your 1200 position using the following observations of
the Sun.
{{{
Zone Time
GHA
Declination
Ho
1204
61°54.6'
N 19°37.6' 88°39.7'
1210
63°24.6'
N 19°37.7' 88°59.2'}}} |
LAT 20°25.2'N,
LONG 62°56.9'W |
LAT 20°30.1'N,
LONG 63°01.9'W |
LAT 20°27.6'N,
LONG 62°52.4'W |
LAT 20°32.6'N,
LONG 62°57.5'W |
Fix or Running
Fix. Sun |
| C |
On 30 July your 1030 ZT DR
position is LAT 19°02'N, LONG 138°12'W. You are on course 309°T, speed 24
knots. Determine your 1200 position using the following observations of
the Sun.
{{{
(5.1.4.1-7)
ZT
GHA
DECLINATION
Ho
1220 138°25.0'
N 18°22.3' 88°43.3'
1226 139°55.0'
N 18°22.2' 88°24.0'}}} |
LAT 19°32.6'N,
LONG 138°49.4'W |
LAT 19°28.0'N,
LONG 138°35.2'W |
LAT 19°29.7'N,
LONG 138°42.0'W |
LAT 19°34.5'N,
LONG 138°40.9'W |
Fix or Running
Fix. Sun |
| A |
On 30 July your 1030 ZT DR
position is LAT 17°46'N, LONG 139°30'W. You are on course 129°T, speed 24
knots. Determine your 1200 position using the following observations of
the Sun.
{{{
(5.1.4.1-8)
ZT
GHA DECLINATION
Ho
1220 138°25.0'
N 18°22.3'
88°43.3'
1226 139°55.0'
N 18°22.2'
88°24.0'}}} |
LAT 17°15.1'N,
LONG 139°00.0'W |
LAT 17°18.7'N,
LONG 139°07.6'W |
LAT 17°24.0'N,
LONG 138°59.8'W |
LAT 17°21.6'N,
LONG 138°56.2'W |
Fix or Running
Fix. Sun |
| D |
At 0900 zone time on 23 September
your DR position is LAT 28°48.0'N, LONG 153°11.5'W. You are steering course
257°T at a speed of 18.0 knots. You observed 3 morning sun lines. Determine
the latitude and longitude of your 1020 running fix? (See Navigation Problems
Question Tables NP-0001 Below) |
28°46.4'N, 153°34.6'W |
28°43.3'N, 153°32.1'W |
28°52.8'N, 153°30.6'W |
28°49.1'N, 153°37.0'W |
Running Fix (Problems
with NP Tables) |
| C |
At 0100 zone time on 23 September
your DR position is LAT 24°25.0'N, LONG 83°00.0'W. You are steering course
315°T. The speed over the ground is 10.0 knots. You observed 3 morning sun
lines. Determine the latitude and longitude of your 1100 running fix? (See
Navigation Problems Question Tables NP-0002 Below) |
LAT 25°28.3'N,
LONG 84°34.3'W |
LAT 25°42.6'N,
LONG 84°18.7'W |
LAT 25°35.3'N,
LONG 84°17.0'W |
LAT 25°30.4'N,
LONG 84°28.6'W |
Running Fix (Problems
with NP Tables) |
| C |
Your 0745 ZT 15 July position
is LAT 29°04.0'N, LONG 71°17.5'W. You are on course 165°T, and your speed
is 8.0 knots. You observed 3 morning sun lines. Determine the latitude and
longitude of your 1130 running fix? (See Navigation Problems Question Tables
NP-0003 Below) |
LAT 28°39.8'N,
LONG 71°04.0'W |
LAT 28°43.3'N,
LONG 71°02.5'W |
LAT 28°35.0'N,
LONG 71°08.5'W |
LAT 28°40.5'N,
LONG 71°13.0'W |
Running Fix (Problems
with NP Tables) |
| A |
At 0600 zone time, on 16 March
your DR position is LAT 20°10.0'N, LONG 81°30.0'W. You are steering course
300°T. The speed over the ground is 10 knots. You observed 3 morning sun
lines. Determine the latitude and longitude of your 1130 running fix? (See
Navigation Problems Question Tables NP-0004 Below) |
LAT 20°39.0'N,
LONG 82°22.9'W |
LAT 20°42.5'N,
LONG 82°26.2'W |
LAT 20°32.0'N,
LONG 82°16.4'W |
LAT 20°28.5'N,
LONG 82°12.6'W |
Running Fix (Problems
with NP Tables) |
| A |
On 23 August in DR position
LAT 24°22.0'S, LONG 64°55.3'E, you take an ex-meridian observation of the
Moon's upper limb at upper transit. The chronometer time of the sight is
02h 15m 04s, and the chronometer error is 01m 06s fast. The sextant altitude
(hs) is 48°03.6'. The index error is 2.0' on the arc, and your height of
eye is 60 feet (21.0 meters). What is the latitude at meridian transit? |
24°20.5'S |
24°49.5'S |
24°24.8'S |
24°22.8'S |
Latitude at Meridian
Transit |
| D |
On 30 March in DR position
LAT 20°26.2'N, LONG 131°17.9'E, you take an ex-meridian observation of the
Moon's lower limb at upper transit. The chronometer time of the sight is
10h 36m 02s, and the chronometer error is 02m 06s slow. The sextant altitude
(hs) is 48°21.4'. The index error is 2.0' on the arc, and your height of
eye is 40 feet. What is the latitude at meridian transit? |
LAT 20°44.8'N |
LAT 20°15.6'N |
LAT 20°23.7'N |
LAT 20°31.9'N |
Latitude at Meridian
Transit |
| A |
On 22 August in DR position
LAT 29°41.8'N, LONG 33°15.5'W, you take an ex-meridian observation of the
Moon's upper limb at upper transit. The chronometer time of the sight is
08h 00m 02s, and the chronometer error is 02m 20s slow. The sextant altitude
(hs) is 74°32.4'. The index error is 1.5' off the arc, and your height of
eye is 48 feet. What is the latitude at meridian transit? |
LAT 29°47.8'N |
LAT 29°49.7'N |
LAT 29°41.3'N |
LAT 29°39.3'N |
Latitude at Meridian
Transit |
| D |
On 19 November in DR position
LAT 20°03.5'N, LONG 129°48.0'W, you take an ex-meridian observation of the
planet Venus at upper transit. The chronometer time of the sight is 11h
29m 44s, and the chronometer error is 01m 23s slow. The sextant altitude
(hs) is 43°54.3'. The index error is 2.0' off the arc, and your height of
eye is 48 feet. What is the latitude at meridian transit? |
19°50.6'N |
19°53.2'N |
20°08.2'N |
19°58.0'N |
Latitude at Meridian
Transit |
| D |
On 17 November in DR position
LAT 01°14.4'S, LONG 148°45.5'E, you take an ex-meridian observation of the
planet Venus at upper transit. The chronometer time of the sight is 05h
31m 42s, and the chronometer error is 01m 50s fast. The sextant altitude
(hs) is 64°41.1'. The index error is 1.8' off the arc, and your height of
eye is 50 feet. What is the latitude at meridian transit? |
LAT 01°20.2'S |
LAT 01°16.3'S |
LAT 01°14.4'S |
LAT 01°18.0'S |
Latitude at Meridian
Transit |
| D |
On 16 June in DR position
LAT 50°57.0'S, LONG 53°03.9'W (ZD+4), you take an ex-meridian observation
of Acrux at lower transit. The chronometer time of the sight is 10h 08m
18s, and the chronometer error is 02m 12s fast. The sextant altitude (hs)
is 23°49.0'. The index error is 1.1' off the arc, and your height of eye
is 26 feet. What is the latitude at meridian transit? |
51°02.2'S |
51°41.2'S |
51°33.0'S |
50°41.2'S |
Latitude at Meridian
Transit |
| A |
On 8 May in DR position LAT
30°26.0'N, LONG 46°55.1'W, you take an ex-meridian observation of Dubhe.
The chronometer time of the sight is 11h 10m 54s, and the chronometer error
is 01m 18s slow. The sextant altitude (hs) is 58°35.0'. The index error
is 1.5' on the arc, and your height of eye is 44 feet. What is the latitude
at meridian transit? |
LAT 30°19.8'N |
LAT 30°35.8'N |
LAT 30°12.5'N |
LAT 30°27.6'N |
Latitude at Meridian
Transit |
| A |
On 15 December in DR position
LAT 23°24.0'N, LONG 55°36.0'W, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 03h 45m 19s, and
the chronometer error is 00m 00s. The sextant altitude (hs) is 43°02.3'.
The index error is 2.6' on the arc, and your height of eye is 65.0 feet.
What is the latitude at meridian transit? |
LAT 23°33.5'N |
LAT 23°35.8'N |
LAT 23°40.6'N |
LAT 23°38.1'N |
Latitude at Meridian
Transit Sun |
| B |
On 30 December in DR position
LAT 28°24.0'S, LONG 32°15.0'W, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 02h 09m 16s, and
the chronometer error is 00m 00s. The sextant altitude (hs) is 84°03.3'.
The index error is 3.5' off the arc, and your height of eye is 62.0 feet.
What is the latitude at meridian transit? |
LAT 28°50.6'S |
LAT 28°51.9'S |
LAT 28°54.2'S |
LAT 28°56.6'S |
Latitude at Meridian
Transit Sun |
| D |
On 16 November your 1200 ZT
DR position is LAT 26°48.0'S, LONG 124°32.0'W. Your vessel is on course
078°T, speed 17.0 knots. You observe an ex-meridian of the Sun's lower limb.
The sextant (hs) reads 81°41.3'. The index error is 1.5' off the arc, and
your height of eye is 56 feet. The chronometer time of the observation is
08h 15m 32s, and the chronometer is 03m 06s fast. What is your latitude
at meridian transit? |
26°52.3'S |
26°49.5'S |
26°47.1'S |
26°42.6'S |
Latitude at Meridian
Transit Sun |
| B |
On 29 October in DR position
LAT 41°12.0'N, LONG 50°18.9'W, you take an ex-meridian observation of the
Sun's lower limb, near upper transit. The chronometer time of the sight
is 03h 21m 12s, and the chronometer error is 01m 50s slow. The sextant altitude
(hs) is 34°54.2'. The index error is 2.0' on the arc, and your height of
eye is 45 feet. What is the latitude at meridian transit? |
41°12.0'N |
41°16.0'N |
41°20.2'N |
41°23.6'N |
Latitude at Meridian
Transit Sun |
| C |
On 27 March in DR position
LAT 32°31.0'N, LONG 76°25.0'W, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 05h 23m 32s, and
the chronometer error is 01m 30s fast. The sextant altitude (hs) is 59°59.0'.
The index error is 1.8' off the arc, and your height of eye is 52 feet.
What is the latitude at meridian transit? |
LAT 32°37.6'N |
LAT 32°46.2'N |
LAT 32°29.5'N |
LAT 32°21.6'N |
Latitude at Meridian
Transit Sun |
| C |
On 15 March in DR position
LAT 21°42.0'N, LONG 55°26.0'W, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 04h 02m 40s, and
the chronometer error is 02m 24s fast. The sextant altitude (hs) is 66°15.6'.
The index error is 2.8' on the arc, and your height of eye is 56 feet. What
is the latitude at meridian transit? |
21°12.0'N |
21°18.0'N |
21°32.0'N |
21°24.4'N |
Latitude at Meridian
Transit Sun |
| C |
On 30 August in DR position
LAT 26°34.0'N, LONG 141°36.0'W, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 09h 15m 26s, and
the chronometer error is 00m 00s. The sextant altitude (hs) is 71°41.7'.
The index error is 3.2' off the arc, and your height of eye is 49.6 feet.
What is the latitude at meridian transit? |
LAT 26°44.6'N |
LAT 26°52.3'N |
LAT 26°41.9'N |
LAT 26°48.2'N |
Latitude at Meridian
Transit Sun |
| A |
On 10 March in DR position
LAT 21°42.0'S, LONG 57°28.0'E, you take an ex-meridian observation of the
Sun's lower limb. The chronometer time of the sight is 08h 28m 17s, and
the chronometer error is 00m 00s. The sextant altitude (hs) is 72°08.0'.
The index error is 3.4' on the arc, and your height of eye is 52.7 feet.
What is the latitude at meridian transit? |
LAT 21°45.5'S |
LAT 21°32.5'S |
LAT 21°50.2'S |
LAT 21°40.6'S |
Latitude at Meridian
Transit Sun |
| A |
On 15 October an ex-meridian
altitude of the Sun's lower limb at upper transit was observed at 1146 ZT.
Your DR position is LAT 22°42.0'N, LONG 139°52.0'E, and your sextant altitude
(hs) is 58°30.4'. The index error is 3.4' on the arc, and your height of
eye is 56.7 feet. The chronometer time of the observation is 02h 45m 06s,
and the chronometer error is 01m 06s slow. Find the latitude at meridian
transit from the ex-meridian observation. |
LAT 22°35.2'N |
LAT 22°29.1'N |
LAT 23°20.6'N |
LAT 22°58.1'N |
Latitude at Meridian
Transit Sun |
| C |
On 30 October an ex-meridian
altitude of the Sun's lower limb at upper transit was observed at 1144 ZT.
Your DR position is LAT 22°42.0'S, LONG 137°16.0'W, and your sextant altitude
(hs) is 80°59.4'. The index error is 2.5' off the arc, and your height of
eye is 42.5 feet. The chronometer time of the observation is 08h 46m 15s,
and the chronometer error is 02m 12s fast. Find the latitude at meridian
transit from the ex-meridian observation. |
LAT 22°42.3'S |
LAT 23°00.9'S |
LAT 22°31.4'S |
LAT 22°46.2'S |
Latitude at Meridian
Transit Sun |
| B |
On 15 August an ex-meridian
altitude of the Sun's lower limb at upper transit was observed at 1130 ZT.
Your DR position is LAT 26°24.0'S, LONG 155°02.0'E, and your sextant altitude
(hs) is 48°45.9'. The index error is 2.6' on the arc, and your height of
eye is 51.5 feet. The chronometer time of the observation is 01h 27m 38s,
and the chronometer error is 02m 14s slow. Find the latitude at meridian
transit from the ex-meridian observation. |
LAT 27°09.9'S |
LAT 26°51.6'S |
LAT 26°32.6'S |
LAT 26°57.0'S |
Latitude at Meridian
Transit Sun |
| B |
On 5 May in DR position LAT
38°34.5'N, LONG 124°20.7'W, you take an ex-meridian observation of the Sun's
lower limb. The chronometer time of the sight is 07h 59m 10s, and the chronometer
error is 01m 10s slow. The sextant altitude (hs) is 67°27.0'. The index
error is 1.4' on the arc, and your height of eye is 30 feet. What is the
latitude at meridian transit? |
LAT 38°26.4'N |
LAT 38°36.0'N |
LAT 38°41.2'N |
LAT 38°30.2'N |
Latitude at Meridian
Transit Sun |
| A |
On 16 December your 1810 zone
time DR position is LONG 129°46.5' W. At that time you observe Polaris with
a sextant altitude (hs) of 23°56.8'. The chronometer time of the sight is
03h 12m 31s, and the chronometer error is 02m 16s fast. The index error
is 2.5' off the arc, and the height of eye is 52.6 feet. What is your latitude
by Polaris? |
23°07.8'N |
24°11.9'N |
24°18.6'N |
23°12.3'N |
Latitude by Polaris |
| D |
On 11 February your 1832 zone
time DR position is LONG 110°52.6' W. At that time you observe Polaris with
a sextant altitude (hs) of 26°19.8'. The chronometer time of the sight is
01h 34m 56s, and the chronometer error is 02m 16s fast. The index error
is 2.7' off the arc, and the height of eye is 60.2 feet. What is your latitude
by Polaris? |
26°34.2'N |
25°34.2'N |
26°27.2'N |
25°27.2'N |
Latitude by Polaris |
| B |
On 6 March your 1854 zone
time DR position is LAT 23°51.5' N, LONG 73°14.0' W. At that time you observe
Polaris with a sextant altitude (hs) of 24°16.5'. The chronometer time of
the sight is 11h 52m 40s, and the chronometer error is 01m 56s slow. The
index error is 5.0' on the arc, and the height of eye is 43.5 feet (13.3
meters.) What is your latitude by Polaris? |
23°49.9'N |
23°36.3'N |
24°02.9'N |
23°29.5'N |
Latitude by Polaris |
| A |
On 29 July your 1930 zone
time DR position is LONG 164°26.0' E. At that time you observe Polaris with
a sextant altitude (hs) of 23°46.8'. The chronometer time of the sight is
08h 32m 18s, and the chronometer error is 02m 26s fast. The index error
is 2.7' on the arc, and the height of eye is 56.0 feet. What is your latitude
by Polaris? |
24°19.5'N |
24°01.9'N |
24°31.7'N |
25°19.6'N |
Latitude by Polaris |
| C |
On 24 September your 1841
zone time DR position is LAT 25°15.0' N, LONG 129°34.5' E. At that time
you observe Polaris with a sextant altitude (hs) of 25°20.8'. The chronometer
time of the sight is 09h 38m 12s, and the chronometer error is 03m 12s slow.
The index error is 4.3' off the arc, and the height of eye is 52.0 feet.
What is your latitude by Polaris? |
25°16.0'N |
24°28.4'N |
25°37.6'N |
25°42.3'N |
Latitude by Polaris |
| B |
On 29 April your 1913 zone
time DR position is LAT 22°09.0' N, LONG 56°16.0' W. At that time you observe
Polaris with a sextant altitude (hs) of 22°25.8'. The chronometer time of
the sight is 11h 11m 14s, and the chronometer error is 02m 18s slow. The
index error is 1.5' off the arc, and the height of eye is 61.5 feet. What
is your latitude by Polaris? |
22°48.8'N |
22°39.9'N |
21°39.9'N |
21°55.7'N |
Latitude by Polaris |
| B |
On 14 March your 1846 ZT DR
position is LAT 21°57.6' N, LONG 132°16.2' W. At that time you observe Polaris
with a sextant altitude (hs) of 22°16.8'. The chronometer time of the sight
is 03h 45m 10s, and the chronometer error is 01m 32s slow. The index error
is 3.2' off the arc, and the height of eye is 44.9 feet. What is your latitude
by Polaris? |
21°32.4'N |
21°49.8'N |
21°51.0'N |
21°53.1'N |
Latitude by Polaris |
| A |
On 16 February your 1845 ZT
DR position is LAT 25°50.5' N, LONG 46°24.0' W. At that time you observe
Polaris with a sextant altitude (hs) of 26°25.5'. The chronometer time of
the sight is 09h 47m 30s and the chronometer error is 02m 16s fast. The
index error is 2.5' off the arc, and the height of eye is 55.0 feet. What
is your latitude by Polaris? |
25°38.0'N |
26°00.1'N |
26°37.5'N |
25°44.2'N |
Latitude by Polaris |
| D |
On 15 July at 0447 ZT, your
vessel's DR position is LAT 22°42' N, LONG 126°36' E. At approximately this
time, you obtain a sextant altitude (hs) of Polaris reading 23°46.2' with
an index error of 1.6' off the arc. Your chronometer reads 08h 48m 28s,
and is 1m 16s fast. What is your latitude by Polaris, given a height of
eye of 33 feet? |
22°50.2'N |
22°46.2'N |
22°44.1'N |
22°54.1'N |
Latitude by Polaris |
| D |
On 7 March at 1838 ZT, in
DR position LAT 34°26.9' N, LONG 58°16.2' W, you observe Polaris for latitude.
The sextant altitude (hs) is 35°08.4'. The index error is 2.5' off the arc.
The height of eye is 54 feet. What is the latitude at the time of the sight? |
34°36.8'N |
34°29.8'N |
34°34.8'N |
34°33.4'N |
Latitude by Polaris |
| A |
On 22 May at 0440 ZT, your
vessel's DR position is LAT 23°24' N, LONG 110°24' W. At approximately this
time, you obtain a sextant altitude (hs) of Polaris reading 23°40.9' with
an index error of 1.6' on the arc. Your chronometer reads 11h 42m 14s, and
is 2m 36s fast. What is your latitude by Polaris, given a height of eye
of 24 feet? |
23°31.2'N |
23°32.8'N |
23°28.6'N |
23°30.0'N |
Latitude by Polaris |
| B |
On 13 October at 1847 ZT,
your vessel's DR position is LAT 42°17.4' N, LONG 138°46.2' W. At approximately
this time, you obtain a sextant altitude (hs) of Polaris reading 42°16.8',
with an index error of 3.2' on the arc. Your chronometer reads 03h 45m 20s
and is 1m 32s slow. What is your latitude by Polaris, given a height of
eye of 44 feet? |
42°16.0'N |
42°09.1'N |
42°12.5'N |
42°19.5'N |
Latitude by Polaris |
| D |
On 16 January at 1804 zone
time, you take a sextant observation of Polaris. Your vessel's DR position
is LAT 36°12' N, LONG 124°36' W, and your sextant reads (hs) 37°16.4'. Your
chronometer reads 02h 02m 12s, and is 01m 36s slow. Your height of eye is
60 feet, and the index error is 1.5' on the arc. From your observation of
Polaris, what is the latitude of your vessel? |
36°14.4'N |
36°20.2'N |
36°12.6'N |
36°17.9'N |
Latitude by Polaris |
| A |
On 14 March at 1845 ZT, you
take a sextant observation of Polaris. Your DR position is LAT 29°10' N,
LONG 154°30' W, and your sextant reads 29°53.5'. Your chronometer reads
04h 42m 36s, and the chronometer error is 02m 24s slow. Your height of eye
is 24 feet, and the index error is 1.3' off the arc. Determine the latitude
by Polaris. |
29°21.3'N |
29°18.0'N |
29°15.5'N |
29°11.7'N |
Latitude by Polaris |
| B |
On 7 May you observe Polaris
for latitude at 0303 ZT. Your DR position is LAT 56°35.4' N, LONG 05°38.9'
W. The sextant altitude is 56°11.1'. The height of eye is 36', and the index
error is 3.3' off the arc. What is the latitude at the time of the sight? |
56°35.0'N |
56°38.7'N |
56°24.6'N |
56°32.6'N |
Latitude by Polaris |
| A |
On 15 February at 0610 ZT,
in DR position LAT 56°53.0' N, LONG 157°02.9' E, you observe Polaris at
a sextant altitude (hs) of 56°10.4'. The index error is 2.5' on the arc,
and the height of eye is 18 meters. What is the latitude? |
56°41.8'N |
56°48.1'N |
57°10.6'N |
56°47.9'N |
Latitude by Polaris |
| C |
On 28 October at 1754 ZT,
your vessel's DR position is LAT 28°30' N, LONG 63°24' W. At this time,
you obtain a sextant altitude (hs) of Polaris reading 28°42.6', with an
index error of 2.4' on the arc. Your chronometer reads 09h 50m 00s, and
is 4m 14s slow. What is your latitude by Polaris, given a height of eye
of 28 feet (8.5 meters)? |
28°30.6'N |
28°25.2'N |
28°34.9'N |
28°41.3'N |
Latitude by Polaris |
| D |
On 5 May at 1953 zone time,
you take a sextant observation of Polaris. Your vessel's DR position is
LAT 29°30.0' N, LONG 66°25.7' W, and your sextant reads 29°07.2'. Your chronometer
reads 11h 51m 45s, and your chronometer error is 01m 36s slow. Your height
of eye is 56 feet, and the index error for your sextant is 1.5' on the arc.
What is the latitude of your vessel from your observation of Polaris? |
29°38.8'N |
29°14.3'N |
29°32.3'N |
29°23.6'N |
Latitude by Polaris |
| A |
On 16 July at 2000 zone time,
you take a sextant observation of Polaris. Your vessel's DR position is
LAT 27°22.0' N, LONG 148°35.0' W, and your sextant reads 26°57.5'. Your
chronometer reads 05h 59m 16s, and your chronometer error is 01m 28s slow.
Your height of eye is 48 feet, and the index error for your sextant is 1.3'
off the arc. What is the latitude of your vessel from your observation of
Polaris? |
27°36.1'N |
26°58.8'N |
26°52.1'N |
27°43.4'N |
Latitude by Polaris |
| C |
On 10 June your 2010 zone
time DR position is LAT 41°10.0' N, LONG 61°15.0' W. At that time, you observe
Polaris with a sextant altitude (hs) of 40°35.8'. The chronometer time of
the sight is 00h 08m 18s, and the chronometer error is 01m 54s slow. The
index error is 2.0' on the arc, and the height of eye is 40 feet. What is
your latitude by Polaris? |
41°10.6'N |
41°18.3'N |
41°15.0'N |
41°21.2'N |
Latitude by Polaris |
| A |
On 24 September your 1841
zone time DR position is LONG 129°34.5' E. At that time you observe Polaris
with a sextant altitude (hs) of 25°20.8'. The chronometer time of the sight
is 09h 38m 12s, and the chronometer error is 03m 12s slow. The index error
is 4.3' off the arc, and the height of eye is 52 feet (15.9 meters). What
is your latitude by Polaris? |
25°37.6'N |
24°28.1'N |
25°42.3'N |
25°16.0'N |
Latitude by Polaris |
| C |
On 18 November your 1750 zone
time DR position is LONG 110°16.0' W. At that time you observe Polaris with
a sextant altitude (hs) of 21°29.8'. The chronometer time of the sight is
00h 52m 43s, and the chronometer error is 02m 18s fast. The index error
is 3.2' on the arc, and the height of eye is 49.5 feet. What is your latitude
by Polaris? |
21°13.4'N |
21°28.1'N |
21°03.4'N |
21°35.1'N |
Latitude by Polaris |
| D |
On 2 January your 1759 zone
time DR longitude is 45°17.6' W. At that time you observe Polaris with a
sextant altitude (hs) of 24°16.5'. The chronometer time of the sight is
08h 57m 10s, and the chronometer error is 02m 16s slow. The index error
is 3.5' on the arc, and the height of eye is 42.5 feet. What is your latitude
by Polaris? |
23°30.8'N |
22°50.2'N |
23°48.8'N |
23°18.8'N |
Latitude by Polaris |
| C |
On 3 January your 1759 zone
time DR position is LONG 60°53.2' W. At that time you observe Polaris with
a sextant altitude (hs) of 22°55.8'. The chronometer time of the sight is
09h 57m 10s, and the chronometer error is 02m 26s slow. The index error
is 2.9' off the arc, and the height of eye is 52.5 feet. What is your latitude
by Polaris? |
21°52.5'N |
21°35.2'N |
22°03.6'N |
22°22.6'N |
Latitude by Polaris |
| D |
On 12 March your 1846 zone
time DR position is LONG 129°16.5' W. At that time you observe Polaris with
a sextant altitude (hs) of 28°01.5'. The chronometer time of the sight is
03h 44m 10s, and the chronometer error is 01m 55s slow. The index error
is 2.2' off the arc, and the height of eye is 59.8 feet (18.2 m). What is
your latitude by Polaris? |
27°40.9'N |
27°54.4'N |
28°06.9'N |
27°33.7'N |
Latitude by Polaris |
| A |
On 11 March your 1846 zone
time DR position is LAT 25°05.7' N, LONG 124°29.0' W. At that time you observe
Polaris with a sextant altitude (hs) of 25°59.1'. The chronometer time of
the sight is 02h 44m 01s, and the chronometer error is 02m 15s slow. The
index error is 3.9' on the arc, and the height of eye is 42.7 feet (13.0
meters). What is your latitude by Polaris? |
25°17.9'N |
26°15.2'N |
25°28.1'N |
25°14.2'N |
Latitude by Polaris |
| A |
On 22 August your 1852 zone
time DR position is LONG 155°54.0' E. At that time you observe Polaris with
a sextant altitude (hs) of 27°36.9'. The chronometer time of the sight is
08h 54m 06s, and the chronometer error is 02m 20s fast. The index error
is 3.6' off the arc, and the height of eye is 61.5 feet. What is your latitude
by Polaris? |
28°05.9'N |
28°09.5'N |
27°05.5'N |
27°31.0'N |
Latitude by Polaris |
| B |
On 6 December your 0800 zone
time DR position was LAT 21°48.0'N, LONG 124°30.0'E. Your vessel was steaming
on course 045°T at a speed of 20.0 knots. An observation of the Sun's lower
limb was made at 1012 ZT. The chronometer read 02h 10m 42s and was slow
01m 02s. The observed altitude (Ho) was 41°17.1'. LAN occurred at 1129 zone
time. The observed altitude (Ho) was 44°53.7'. What was the longitude of
your 1200 zone time running fix? |
LONG 125°28.9'E |
LONG 125°35.2'E |
LONG 125°25.0'E |
LONG 125°32.5'E |
Longitude of Fix
or Running Fix. |
| A |
On 7 November your 0830 zone
time position was LAT 27°36.0'N, LONG 162°19.0'W. Your vessel was steaming
on course 289°T at a speed of 19.0 knots. An observation of the Sun's lower
limb was made at 0945 ZT. The chronometer read 08h 43m 11s and was slow
01m 51s. The observed altitude (Ho) was 38°21.1'. Local Apparent Noon (LAN)
occurred at 1138 zone time. The observed altitude (Ho) was 45°35.0'. What
was the longitude of your 1200 zone time running fix? |
163°38.8'W |
163°34.0'W |
163°26.0'W |
163°30.2'W |
Longitude of Fix
or Running Fix. |
| B |
On 8 February your 0800 zone
time (ZT) position was LAT 28°55.0'S, LONG 52°27.0'W. Your vessel was steaming
on course 036°T at a speed of 19.0 knots. An observation of the Sun's lower
limb was made at 0938 ZT. The chronometer read 12h 37m 23s and was slow
01m 24s. The observed altitude (Ho) was 45°29.2'. Local Apparent Noon (LAN)
occurred at 1240 ZT. The observed altitude (Ho) was 77°10.5'. What was the
longitude of your 1200 ZT running fix? |
51°29.6'W |
51°35.4'W |
51°33.1'W |
51°31.4'W |
Longitude of Fix
or Running Fix. |
| D |
On 17 January your 0730 zone
time fix gives you a position of LAT 22°26.0'S, LONG 152°17.0'E. Your vessel
is steaming on a course of 116°T at a speed of 17 knots. An observation
of the Sun's lower limb is made at 1015 zone time. The chronometer reads
00h 13m 23s, and the chronometer error is 01m 49s slow. The observed altitude
(Ho) is 66°02.1'. LAN occurs at 1152 zone time and a meridian altitude of
the Sun's lower limb is made. The observed altitude (Ho) is 87°54.2'. Determine
the vessel's 1200 zone time position. |
LAT 22°56.3'S,
LONG 153°25.6'E |
LAT 22°56.3'S,
LONG 153°28.8'E |
LAT 22°53.8'S,
LONG 153°28.8'E |
LAT 22°53.8'S,
LONG 153°25.6'E |
Longitude of Fix
or Running Fix. |
| A |
On 11 November your 0730 zone
time position was LAT 19°58.0'N, LONG 143°54.0'W. Your vessel was steaming
on course 084°T at a speed of 15.0 knots. An observation of the Sun's lower
limb was made at 0931 ZT. The chronometer read 07h 29m 22s and was slow
02m 22s. The observed altitude (Ho) was 44°17.6'. LAN occurred at 1125 zone
time (ZD +10). The observed altitude (Ho) was 52°17.4'. What was the longitude
of your 1200 zone time running fix? |
142°40.2'W |
142°44.2'W |
142°34.7'W |
142°37.1'W |
Longitude of Fix
or Running Fix. |
| D |
On 30 August your 0554 zone
time (ZT) position was LAT 25°39.0'S, LONG 31°51.0'E. Your vessel was steaming
on course 325°T at a speed of 15.0 knots. An observation of the Sun's lower
limb was made at 0836 ZT. The chronometer read 06h 38m 36s and was fast
02m 24s. The observed altitude (Ho) was 30°49.2'. LAN occurred at 1157 ZT.
The observed altitude (Ho) was 56°40.0'. What was the longitude of your
1157 ZT running fix? |
30°55.9'E |
30°59.8'E |
30°57.6'E |
30°52.5'E |
Longitude of Fix
or Running Fix. |
| B |
On 20 November your 0612 zone
time (ZT) position was LAT 25°38.0'N, LONG 166°54.0'W. Your vessel was steaming
on course 126°T at a speed of 20.0 knots. An observation of the Sun's lower
limb was made at 0854 ZT. The chronometer read 07h 51m 14s and was slow
02m 52s. The observed altitude (Ho) was 27°58.3'. LAN occurred at 1147 ZT.
The observed altitude (Ho) was 45°35.0'. What was the longitude of your
1147 ZT running fix? |
165°20.2'W |
165°12.5'W |
165°18.4'W |
165°15.8'W |
Longitude of Fix
or Running Fix. |
| C |
On 23 May your 0628 zone time
position was LAT 28°18.0'S, LONG 102°42.0'E. Your vessel was steaming on
course 040°T at a speed of 20.0 knots. An observation of the Sun's lower
limb was made at 0758 ZT. The chronometer read 01h 02m 06s and was fast
04m 04s. The observed altitude (Ho) was 13°16.7'. LAN occurred at 1201 zone
time. The observed altitude (Ho) was 42°32.0'. What was the longitude of
your 1201 zone time running fix? |
104°06.3'E |
104°00.4'E |
104°03.5'E |
103°57.9'E |
Longitude of Fix
or Running Fix. |
| C |
On 16 February your 0640 zone
time (ZT) position was LAT 23°46.0'N, LONG 156°24.0'W. Your vessel was steaming
on course 222°T at a speed of 18.0 knots. An observation of the Sun's lower
limb was made at 0910 ZT. The chronometer read 07h 08m 06s and was slow
01m 56s. The observed altitude (Ho) was 27°15.8'. LAN occurred at 1245 ZT
(ZD +10). The observed altitude (Ho) was 55°25.3'. What was the longitude
of your 1245 ZT running fix? |
157°45.7'W |
157°37.2'W |
157°42.0'W |
157°47.2'W |
Longitude of Fix
or Running Fix. |
| C |
On 27 March your 0730 zone
time position is LAT 28°16'N, LONG 56°37'W. Your vessel is on course 158°T
at a speed of 15.0 knots. An observation of the Sun's lower limb is made
at 0915 zone time. The chronometer reads 01h 14m 11s, and the chronometer
error is 00m 53s slow. The observed altitude (Ho) is 45°10.7'. LAN occurs
at 1150 zone time, and a meridian altitude of the Sun's lower limb is made.
The observed altitude (Ho) is 65°32.8'. Determine the vessel's 1200 zone
time position. |
LAT 27°11.6'N,
LONG 56°04.2'W |
LAT 27°08.8'N,
LONG 56°10.3'W |
LAT 27°08.8'N,
LONG 56°04.2'W |
LAT 27°11.6'N,
LONG 56°10.3'W |
Longitude of Fix
or Running Fix. |
| A |
On 22 February your 0800 zone
time position is LAT 24°16'S, LONG 95°37'E. Your vessel is on course 126°T
at a speed of 14 knots. An observation of the Sun's lower limb is made at
0945 zone time. The chronometer reads 03h 47m 22s, and the chronometer error
is 02m 37s fast. The observed altitude (Ho) is 57°02.1'. LAN occurs at 1148
zone time, and a meridian altitude of the Sun's lower limb is made. The
observed meridian altitude (Ho) is 75°22.3'. Determine the vessel's 1200
zone time position. |
LAT 24°52.2'S,
LONG 96°24.0'E |
LAT 24°49.3'S,
LONG 96°24.0'E |
LAT 24°52.2'S,
LONG 96°27.2'E |
LAT 24°49.3'S,
LONG 96°27.2'E |
Longitude of Fix
or Running Fix. |
| B |
On 8 February your 0800 zone
time position is LAT 21°55'S, LONG 52°27'W. Your vessel is on course 056°T
at a speed of 17.5 knots. An observation of the Sun's lower limb is made
at 0938 zone time, and the observed altitude (Ho) is 46°06.5'. The chronometer
reads 12h 37m 23s, and the chronometer error is 1m 24s slow. LAN occurs
at 1243 zone time, and a meridian altitude of the Sun's lower limb is made.
The observed altitude (Ho) for this sight is 83°56.1'. Determine the vessel's
1200 zone time position. |
LAT 20°58.0'S,
LONG 51°25.5'W |
LAT 21°04.0'S,
LONG 51°21.5'W |
LAT 20°57.0'S,
LONG 51°21.5'W |
LAT 21°04.0'S,
LONG 51°12.0'W |
Longitude of Fix
or Running Fix. |
| B |
On 20 September your 0730
zone time position was LAT 28°58.0'N, LONG 152°26.0'W. Your vessel was steaming
on course 225°T at a speed of 19.0 knots. An observation of the Sun's lower
limb was made at 0931 ZT. The chronometer read 07h 29m 20s and was slow
02m 22s. The observed altitude (Ho) was 44°14.4'. LAN occurred at 1206 zone
time. The observed altitude (Ho) was 62°49.5'. What was the longitude of
your 1200 zone time running fix? |
LONG 153°32.5'W |
LONG 153°23.5'W |
LONG 153°20.0'W |
LONG 153°27.2'W |
Longitude of Fix
or Running Fix. |
| D |
On 15 August your 0512 zone
time position was LAT 29°18.0'N, LONG 57°24.0'W. Your vessel was steaming
on course 262°T at a speed of 20.0 knots. An observation of the Sun's lower
limb was made at 0824 ZT. The chronometer read 00h 22m 24s and was slow
01m 34s. The observed altitude (Ho) was 38°16.7'. LAN occurred at 1204 zone
time. The observed altitude (Ho) was 74°58.0'. What was the longitude of
your 1204 zone time running fix? |
LONG 59°52.0'W |
LONG 59°54.0'W |
LONG 60°02.0'W |
LONG 59°58.5'W |
Longitude of Fix
or Running Fix. |
| C |
On 17 January your 0730 zone
time position was LAT 22°26.0'N, LONG 152°17.0'E. Your vessel was steaming
on course 136°T at a speed of 17.0 knots. An observation of the Sun's lower
limb was made at 1015 ZT. The chronometer read 00h 13m 23s and was slow
01m 49s. The observed altitude (Ho) was 40°25.7'. LAN occurred at 1222 zone
time. The observed altitude (Ho) was 47°48.1'. What was the longitude of
your 1200 zone time running fix? |
LONG 153°08.3'E |
LONG 153°18.6'E |
LONG 153°13.1'E |
LONG 153°04.2'E |
Longitude of Fix
or Running Fix. |
| D |
On 29 June your 0800 zone
time fix gives you a position of LAT 26°16.0'S, LONG 61°04.0'E. Your vessel
is steaming a course of 079°T at a speed of 15.5 knots. An observation of
the Sun's upper limb is made at 0905 zone time, and the observed altitude
(Ho) is 25°20.1. The chronometer reads 05h 08m 12s, and the chronometer
error is 02m 27s fast. Local apparent noon occurs at 1154 zone time, and
a meridian altitude of the Sun's lower limb is made. The observed altitude
(Ho) for this sight is 40°44.2'. Determine the vessel's 1200 zone time position. |
LAT 26°05.1'S,
LONG 62°06.3'E |
LAT 26°02.0'S,
LONG 62°23.2'E |
LAT 25°56.0'S,
LONG 62°03.0'E |
LAT 26°02.0'S,
LONG 62°05.0'E |
Longitude of Fix
or Running Fix. |
| C |
On 2 April your 0830 zone
time fix gives you a position of LAT 20°16.0'S, LONG 004°12.0'E. Your vessel
is steaming a course of 143°T at a speed of 18.0 knots. An observation of
the Sun's upper limb is made at 0903 zone time, and the observed altitude
(Ho) is 42°39.6'. The chronometer reads 09h 05m 40s, and the chronometer
error is 02m 15s fast. Local apparent noon occurs at 1145 zone time, and
a meridian altitude of the Sun's lower limb is made. The observed altitude
(Ho) for this sight is 63°46.2'. Determine the vessel's 1200 zone time position. |
LAT 21°14.0'S,
LONG 004°55.0'E |
LAT 22°42.0'S,
LONG 004°57.0'E |
LAT 21°18.0'S,
LONG 005°00.5'E |
LAT 21°10.1'S,
LONG 004°53.9'E |
Longitude of Fix
or Running Fix. |
| C |
On 24 March your 0800 zone
time fix gives you a position of LAT 22°16.0'N, LONG 31°45.0'W. Your vessel
is steaming a course of 285°T at a speed of 16.5 knots. An observation of
the Sun's upper limb is made at 0938 zone time, and the observed altitude
(Ho) is 46°32.2'. The chronometer reads 11h 41m 01s, and the chronometer
error is 02m 50s fast. Local apparent noon occurs at 1214 zone time, and
a meridian altitude of the Sun's lower limb is made. The observed altitude
(Ho) for this sight is 68°55.8'. Determine the vessel's 1200 zone time position. |
LAT 22°35.0'N,
LONG 30°29.0'W |
LAT 22°36.0'N,
LONG 32°55.2'W |
LAT 22°35.0'N,
LONG 32°51.0'W |
LAT 22°36.0'N,
LONG 32°10.5'W |
Longitude of Fix
or Running Fix. |
| B |
On 29 April your 0530 zone
time position was LAT 23°04.0'S, LONG 162°12.0'E. Your vessel was steaming
on course 120°T at a speed of 9.0 knots. An observation of the Sun's upper
limb was made at 0830 ZT. The chronometer read 09h 27m 32s and was slow
02m 24s. The observed altitude (Ho) was 24°58.0'. LAN occurred at 1205 zone
time. The observed altitude (Ho) was 52°04.0'. What was the longitude of
your 1200 zone time running fix? |
LONG 163°09.5'E |
LONG 163°06.0'E |
LONG 163°02.1'E |
LONG 163°11.3'E |
Longitude of Fix
or Running Fix. |
| C |
You observe the planet Saturn
at a sextant altitude (hs) of 63°05.1' on 25 May. The index error is 4.5'
off the arc. The height of eye is 62 feet. What is the observed altitude
(Ho)? |
63°02.9' |
63°00.6' |
63°01.5' |
63°04.1' |
Observed Altitude
(Ho) |
| A |
You observe the planet Jupiter
at a sextant altitude (hs) of 66°27.6' on 26 May. The index error is 5.2'
on the arc. The height of eye is 52 feet. What is the observed altitude
(Ho)? |
66°15.0' |
66°27.2' |
65°32.8' |
65°39.5' |
Observed Altitude
(Ho) |
| D |
During twilight on 28 December
around 1800 GMT, in DR position LAT 4°00'N, LONG 0°06'W, the sextant altitude
(hs) of Venus was 30°46.8'. The height of eye was 36 feet, and the index
error was 2.0' on the arc. The temperature was 68°F. The barometer read
1030 mb. Calculate the observed altitude (Ho). |
Ho 30°37.1' |
Ho 30°35.2' |
Ho 30°40.3' |
Ho 30°38.1' |
Observed Altitude
(Ho) |
| B |
During evening twilight on
28 December a sextant altitude (hs) of the planet Venus was 29°43.2'. The
height of eye was 40 feet, and the index error was 2.0' on the arc. What
was the observed altitude (Ho)? |
29°38.2' |
29°34.1' |
29°36.3' |
29°36.0' |
Observed Altitude
(Ho) |
| A |
You observe the star Deneb
at a sextant altitude (hs) of 48°34.8' on 16 December. The index error is
4.0' off the arc. The height of eye is 58 feet. What is the observed altitude
(Ho)? |
48°30.5' |
48°31.4' |
48°02.9' |
48°46.5' |
Observed Altitude
(Ho) |
| A |
On 29 June you observe the
star Achernar at a sextant altitude (Hs) of 54°18.9'. The index error is
4.7' off the arc. The height of eye is 58 feet. What is the observed altitude
(Ho)? |
54°15.5' |
54°31.5' |
54°06.1' |
54°43.7' |
Observed Altitude
(Ho) |
| A |
You observe the star Antares
at a sextant altitude (hs) of 38°18.7' on 28 February. The index error is
2.4' on the arc. The height of eye is 40 feet (12.2 meters). What is the
observed altitude (Ho)? |
38°09.0' |
38°07.5' |
38°12.5' |
38°10.5' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 24°00.7' on 10 January. The index
error is 2.6' off the arc. The height of eye is 55 feet. What is the observed
altitude (Ho)? |
24°10.2' |
24°08.9' |
24°11.8' |
24°07.4' |
Observed Altitude
(Ho) |
| D |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 46°20.3' on 1 April. The index
error is 4.5' off the arc. The height of eye is 57 feet (17.4 meters). What
is the observed altitude (Ho)? |
46°24.2' |
46°30.1' |
46°27.9' |
46°32.6' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 45°49.7' on 13 November . The index
error is 1.0' on the arc. The height of eye is 61 feet (18.6 meters). What
is the observed altitude (Ho)? |
45°56.4' |
45°59.3' |
45°49.8' |
45°52.9' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 50°26.9' on 9 November. The index
error is 1.5' on the arc. The height of eye is 56 feet (17 meters). What
is the observed altitude (Ho)? |
50°33.5' |
50°04.2' |
50°41.4' |
50°18.1' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 34°51.4' on 18 October. The index
error is 2.0' off the arc. The height of eye is 54 feet (16.5 meters). What
is the observed altitude (Ho)? |
35°03.6' |
35°01.2' |
35°05.2' |
35°07.4' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 38°07.5' on 8 August. The index
error is 5.2' off the arc. The height of eye is 72 feet (22 meters). What
is the observed altitude (Ho)? |
38°19.2' |
38°23.4' |
38°08.4' |
38°13.3' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 75°12.3' on 6 August. The index
error is 1.5' off the arc. The height of eye is 32 feet (9.8 meters). What
is the observed altitude (Ho)? |
75°24.0' |
75°34.6' |
75°30.7' |
75°18.6' |
Observed Altitude
(Ho) |
| C |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 54°28.2' on 22 July. The index
error is 1.5' off the arc. The height of eye is 56 feet (17.1 meters). What
is the observed altitude (Ho)? |
54°36.2' |
54°30.9' |
54°37.7' |
54°37.9' |
Observed Altitude
(Ho) |
| B |
On 4 July you observe the
lower limb of the Sun at a sextant altitude (hs) of 25°29.8'. The index
error is 3.1' off the arc. The height of eye is 48 feet (14.6 meters). What
is the observed altitude (Ho)? |
25°37.1' |
25°40.2' |
25°42.8' |
25°44.3' |
Observed Altitude
(Ho) |
| A |
On 2 January you observe the
lower limb of the Sun at a sextant altitude (hs) of 35°50.4'. The index
error is 0.8' on the arc. The height of eye is 24 feet (7.3 meters). What
is the observed altitude (Ho)? |
35°59.7' |
35°54.7' |
36°05.6' |
35°50.3' |
Observed Altitude
(Ho) |
| A |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 41°29.8' on 11 January. The index
error is 2.4' off the arc. The height of eye is 68 feet. What is the observed
altitude (Ho)? |
41°39.4' |
41°36.4' |
41°42.0' |
41°44.5' |
Observed Altitude
(Ho) |
| D |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 37°47.2' on 11 October. The index
error is 3.0' off the arc. The height of eye is 63 feet (19.2 meters). What
is the observed altitude (Ho)? |
37°25.2' |
37°51.5' |
37°42.5' |
37°57.5' |
Observed Altitude
(Ho) |
| D |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 31°31.5' on 6 March. The index
error is 2.5' on the arc. The height of eye is 76 feet. What is the observed
altitude (Ho)? |
31°38.2' |
31°39.5' |
31°36.7' |
31°35.3' |
Observed Altitude
(Ho) |
| D |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 58°06.6' on 5 April. The index
error is 1.0' off the arc. The height of eye is 55 feet (16.8 meters). What
is the observed altitude (Ho)? |
58°14.2' |
58°16.9' |
58°18.1' |
58°15.8' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 28°24.7' on 17 May. The index error
is 1.5' off the arc. The height of eye is 86 feet (26 meters). What is the
observed altitude (Ho)? |
28°29.7' |
28°31.5' |
28°30.6' |
28°32.9' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 62°22.2' on 6 June. The index error
is 1.2' on the arc. The height of eye is 28 feet (8.5 meters). What is the
observed altitude (Ho)? |
62°36.7' |
62°31.4' |
62°26.9' |
62°24.8' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 42°44.0' on 22 June. The index
error is 0.8' off the arc. The height of eye is 70 feet (21.3 meters). What
is the observed altitude (Ho)? |
42°19.8' |
42°51.7' |
42°21.7' |
42°54.2' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 22°58.6' on 16 June. The index
error is 2.0' off the arc. The height of eye is 61 feet. What is the observed
altitude (Ho)? |
23°09.9' |
23°06.7' |
23°15.4' |
23°22.2' |
Observed Altitude
(Ho) |
| B |
You observe the lower limb
of the Sun at a sextant altitude (hs) of 35°26.3' on 25 June. The index
error is 1.5' on the arc. The height of eye is 58 feet (17.6 meters). What
is the observed altitude (Ho)? |
35°36.7' |
35°32.1' |
35°29.9' |
35°28.2' |
Observed Altitude
(Ho) |
| C |
On 26 November at 0535 ZT,
while taking sights for a morning fix, you observe an unidentified planet
bearing 074°T at an observed altitude (Ho) of 38°29.8'. Your DR position
is LAT 27°18.9' S, LONG 30°18.4' E. The chronometer time of the sight is
03h 33m 16s, and the chronometer is 01m 48s slow. What planet did you observe? |
Venus |
Mars |
Saturn |
Jupiter |
Planet Identification |
| C |
On 26 November your 0535 DR
position is LAT 27°18.9' S, LONG 30°18.4' E. You observe an unidentified
planet bearing 085°T at an observed altitude (Ho) of 32°15.2'. The chronometer
reads 03h 33m 16s, and is 01m 48s slow. What planet did you observe? |
Venus |
Saturn |
Jupiter |
Mars |
Planet Identification |
| C |
On 23 September while taking
stars for an evening fix, an unidentified star is observed bearing 261°T
at an observed altitude of 61°35'. Your 1836 zone time DR position is LAT
25°18' S, LONG 162°36' E. The chronometer reads 07h 34m 12s, and the chronometer
error is 01m 54s slow. Your vessel is steaming on a course of 230°T at a
speed of 18 knots. What star did you observe? |
Canopus |
Sirius |
Antares |
Achernar |
Star Identification |
| A |
On 22 February your 1857 ZT
DR position is LAT 23°46.0' S, LONG 93°16.5' E. You observe an unidentified
star bearing 159°T, at an observed altitude (Ho) of 34°30.0'. The chronometer
reads 01h 00m 35s and is 03m 25s fast. What star did you observe? |
Miaplacidus |
Suhail |
Adhara |
Avior |
Star Identification |
| A |
On 14 January your 0550 ZT
DR position is LAT 25°26.0' N, LONG 38°16.0' W. You observe an unidentified
star bearing 004.5°T, at an observed altitude (Ho) of 40°10.0'. The chronometer
reads 08h 48m 51s and is 01m 22s slow. What star did you observe? |
Kochab |
Gacrux |
Gienah |
Eltanin |
Star Identification |
| D |
On 14 January your 1922 ZT
DR position is LAT 27°18.5' S, LONG 67°18.0' E. You observe an unidentified
star bearing 029°T, at an observed altitude (Ho) of 29°35.0'. The chronometer
reads 03h 25m 43s and is 03m 15s fast. What star did you observe? |
Fomalhaut |
Markab |
Pollux |
Elnath |
Star Identification |
| D |
At 0520 zone time on 17 March,
while taking stars for a morning fix, you observe an unidentified star bearing
050°T, at an observed altitude (Ho) of 45°00.0'. Your DR position at the
time of the sight is LAT 27°23.0'N, LONG 39°42.0' W. The chronometer time
of the sight is 08h 22m 15s, and the chronometer error is 01m 45s fast.
Your vessel is steaming on a course of 300°T at a speed of 18 knots. What
star did you observe? |
Arcturus |
Altair |
Alkaid |
Deneb |
Star Identification |
| A |
On 13 June your 0445 DR position
is LAT 20°12.0' N, LONG 44°45.0' W. You observe an unidentified star bearing
168°T at an observed altitude (Ho) of 38°56.0'. The chronometer reads 07h
43m 20s, and is 01m 39s slow. Which star did you observe? |
Fomalhaut |
Peacock |
Al Na'ir |
Ankaa |
Star Identification |
| B |
On 8 April your evening DR
position is LAT 22°16' N, LONG 157°58.3' W. You observe an unidentified
star bearing 246°T at an observed altitude (Ho) of 58°45.5'. The chronometer
reads 05h 09m 57s, and is 01m 23s slow. What star did you observe? |
Alnilam |
Betelgeuse |
Aldebaran |
Bellatrix |
Star Identification |
| B |
On 8 April your evening DR
position is LAT 22°16.0' N, LONG 157°58.3' W. You observe an unidentified
star bearing 271°T at an observed altitude (Ho) of 44°08.2'. The chronometer
reads 05h 09m 57s, and is 01m 23s slow. What star did you observe? |
Alnilam |
Aldebaran |
Bellatrix |
Betelgeuse |
Star Identification |
| D |
On 8 April while taking observations
for an evening fix, you observe an unidentified star bearing 250.7°T at
an observed altitude of 51°44.8'. Your DR position at the time of the sight
was LAT 22°16.0' N, LONG 157°58.3' W. The chronometer reads 05h 09m 57s
and is 01m 23s slow. What star did you observe? |
Aldebaran |
Alnilam |
Betelgeuse |
Bellatrix |
Star Identification |
| C |
On 8 April your evening DR
position is LAT 22°16.0' N, LONG 157°58.3' W. You observe an unidentified
star bearing 238°T at an observed altitude (Ho) of 50°02.7'. The chronometer
reads 05h 09m 57s, and is 01m 23s slow. What star did you observe? |
Aldebaran |
Betelgeuse |
Alnilam |
Bellatrix |
Star Identification |
| B |
On 22 July your 1759 DR position
is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing
293°T at an observed altitude (Ho) of 17°52.8'. The chronometer reads 06h
01m 31s, and is 02m 15s fast. What star did you observe? |
Miaplacidus |
Regulus |
Suhail |
Antares |
Star Identification |
| A |
On 22 July your 1759 DR position
is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified star bearing
100°T at an observed altitude (Ho) of 61°48.2'. The chronometer reads 06h
01m 31s, and is 02m 15s fast. What star did you observe? |
Antares |
Regulus |
Suhail |
Miaplacidus |
Star Identification |
| A |
On 22 July your 1759 DR position
is LAT 24°50.2' S, LONG 005°16.0' E. You observe an unidentified star bearing
203°T at an observed altitude (Ho) of 28°12.2'. The chronometer reads 06h
01m 31s, and is 02m 15s fast. What star did you observe? |
Miaplacidus |
Suhail |
Regulus |
Antares |
Star Identification |
| C |
On 22 July your 0442 DR position
is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing
091°T at an observed altitude (Ho) of 64°35.2'. The chronometer reads 05h
39m 03s, and is 03m 14s slow. What star did you observe? |
Acamar |
Menkar |
Hamal |
Rigel |
Star Identification |
| C |
On 22 July your 0442 DR position
is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing
104°T at an observed altitude (Ho) of 9°55.7'. The chronometer reads 05h
39m 03s, and is 03m 14s slow. What star did you observe? |
Menkar |
Acamar |
Rigel |
Hamal |
Star Identification |
| C |
On 22 July your 0442 DR position
is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified star bearing
149°T at an observed altitude (Ho) of 12°55.0'. The chronometer reads 05h
39m 03s, and is 03m 14s slow. What star did you observe? |
Hamal |
Rigel |
Acamar |
Menkar |
Star Identification |
| B |
On 22 June your 0424 DR position
is LAT 26°18.5'N, LONG 124°18.2'W. You observe an unidentified star bearing
195°T at an observed altitude (Ho) of 03°30.7'. The chronometer reads 00h
23m 24s, and is 01m 32s slow. What star did you observe? |
Alioth |
Peacock |
Ankaa |
Schedar |
Star Identification |
| C |
On 22 June your 0424 DR position
is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified star bearing
154°T at an observed altitude (Ho) of 15°01.2'. The chronometer reads 12h
23m 24s, and is 01m 32s slow. What star did you observe? |
Alioth |
Schedar |
Ankaa |
Peacock |
Star Identification |
| D |
On 22 June your 0424 DR position
is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified star bearing
249°T at an observed altitude (Ho) of 52°50.7'. The chronometer reads 00h
23m 24s, and is 01m 32s slow. What star did you observe? |
Peacock |
Schedar |
Ankaa |
Altair |
Star Identification |
| C |
On 22 July your 1759 ZT DR
position is LAT 24°50.2' S, LONG 05°16.0' E. You observe an unidentified
star bearing 231°T, at an observed altitude (Ho) of 26°10.0'. The chronometer
reads 06h 01m 31s and is 02m 15s fast. What star did you observe? |
Capella |
Acamar |
Suhail |
Miaplacidus |
Star Identification |
| D |
On 22 May your 0437 DR position
is LAT 25°18.5' N, LONG 51°18.0' W. You observe an unidentified star bearing
142°T at an observed altitude (Ho) of 23°10.2'. The chronometer reads 07h
40m 40s, and is 03m 24s fast. What star did you observe? |
Sabik |
Markab |
Diphda |
Fomalhaut |
Star Identification |
| A |
On 22 May your 0437 DR position
is LAT 25°18.5'N, LONG 51°18.0'W. You observe an unidentified star bearing
116°T at an observed altitude (Ho) of 11°27.8'. The chronometer reads 07h
40m 40s, and is 03m 24s fast. What star did you observe? |
Diphda |
Markab |
Hamal |
Sabik |
Star Identification |
| B |
On 22 May your 0437 DR position
is LAT 25°18.5'N, LONG 51°18.0'W. You observed an unidentified star bearing
233°T at an observed altitude (Ho) of 29°42.3'. The chronometer reads 07h
40m 40s, and is 03m 24s fast. What star did you observe? |
Hamal |
Sabik |
Diphda |
Markab |
Star Identification |
| C |
On 22 April your 1852 DR position
is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing
248°T at an observed altitude (Ho) of 25°00.9'. The chronometer reads 02h
54m 53s, and is 02m 51s fast. What star did you observe? |
Arcturus |
Gienah |
Rigel |
Betelgeuse |
Star Identification |
| C |
On 22 April your 1852 DR position
is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing
077°T at an observed altitude (Ho) of 18°58.7'. The chronometer reads 02h
54m 53s, and is 02m 51s fast. What star did you observe? |
Gienah |
Betelgeuse |
Arcturus |
Diphda |
Star Identification |
| C |
On 22 April your 1852 DR position
is LAT 23°54.5'N, LONG 117°36.8'W. You observe an unidentified star bearing
259°T at an observed altitude (Ho) of 41°15.2'. The chronometer reads 02h
54m 53s, and is 02m 51s fast. What star did you observe? |
Gienah |
Arcturus |
Betelgeuse |
Diphda |
Star Identification |
| A |
On 22 March your 0519 DR position
is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing
115°T at an observed altitude (Ho) of 54°52.8'. The chronometer reads 10h
16m 47s, and is 02m 15s slow. What star did you observe? |
Altair |
Rigel |
Enif |
Menkar |
Star Identification |
| C |
On 22 March your 0519 DR position
is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing
200°T at an observed altitude (Ho) of 33°05.5'. The chronometer reads 10h
16m 47s, and is 02m 15s slow. What star did you observe? |
Acamar |
Enif |
Antares |
Rigel |
Star Identification |
| B |
On 22 March your 0519 DR position
is LAT 27°20.6'N, LONG 69°25.6'W. You observe an unidentified star bearing
051°T at an observed altitude (Ho) of 50°03.7'. The chronometer reads 10h
16m 47s, and is 02m 15s slow. What star did you observe? |
Acamar |
Deneb |
Menkar |
Enif |
Star Identification |
| D |
On 22 March your 1834 DR position
is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing
062°T at an observed altitude (Ho) of 23°22.0'. The chronometer reads 01h
32m 37s, and is 01m 50s slow. Which star did you observe? |
Alphard |
Rigel |
Menkar |
Regulus |
Star Identification |
| A |
On 22 July your 0442 ZT DR
position is LAT 26°35.6' N, LONG 22°16.7' W. You observe an unidentified
star bearing 112°T, at an observed altitude (Ho) of 44°16.0'. The chronometer
reads 05h 39m 03s and is 03m 14s slow. What star did you observe? |
Menkar |
Acamar |
Rigel |
Hamal |
Star Identification |
| D |
On 22 March your 1834 DR position
is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing
315°T at an observed altitude (Ho) of 66°01.2'. The chronometer reads 01h
32m 37s, and is 01m 50s slow. What star did you observe? |
Regulus |
Menkar |
Alphard |
Rigel |
Star Identification |
| B |
On 22 March your 1834 DR position
is LAT 26°13.5'S, LONG 108°36.5'W. You observe an unidentified star bearing
294°T at an observed altitude (Ho) of 33°02.7'. The chronometer reads 01h
32m 37s, and is 01m 50s slow. What star did you observe? |
Rigel |
Menkar |
Regulus |
Alphard |
Star Identification |
| C |
On 22 February your 1857 DR
position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star
bearing 126°T at an observed altitude (Ho) of 40°21.5'. The chronometer
reads 01h 00m 35s and is 03m 25s fast. What star did you observe? |
Avior |
Miaplacidus |
Suhail |
Adhara |
Star Identification |
| C |
On 22 February your 1857 DR
position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star
bearing 150°T at an observed altitude (Ho) of 42°15.0'. The chronometer
reads 01h 00m 35s, and is 03m 25s fast. What star did you observe? |
Suhail |
Adhara |
Avior |
Miaplacidus |
Star Identification |
| C |
On 22 February your 1857 DR
position is LAT 23°46.0'S, LONG 93°16.5'E. You observe an unidentified star
bearing 108°T at an observed altitude (Ho) of 67°53.9'. The chronometer
reads 01h 00m 35s, and is 03m 25s fast. What star did you observe? |
Miaplacidus |
Avior |
Adhara |
Suhail |
Star Identification |
| B |
On 14 January your 0550 DR
position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star
bearing 212°T at an observed altitude (Ho) of 41°42.3'. The chronometer
reads 08h 48m 51s, and is 01m 22s slow. What star did you observe? |
Eltanin |
Gienah |
Gacrux |
Kochab |
Star Identification |
| D |
On 14 January your 0550 DR
position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star
bearing 192°T at an observed altitude (Ho) of 06°15.2'. The chronometer
reads 08h 48m 51s, and is 01m 22s slow. What star did you observe? |
Kochab |
Gienah |
Eltanin |
Gacrux |
Star Identification |
| A |
On 14 January your 0550 DR
position is LAT 25°26.0'N, LONG 38°16.0'W. You observe an unidentified star
bearing 043°T at an observed altitude (Ho) of 37°12.1'. The chronometer
reads 08h 48m 51s, and is 01m 22s slow. What star did you observe? |
Eltanin |
Gacrux |
Gienah |
Kochab |
Star Identification |
| B |
On 14 January your 1922 DR
position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star
bearing 250°T at an observed altitude (Ho) of 31°01.2'. The chronometer
reads 03h 25m 43s, and is 03m 15s fast. Which star did you observe? |
Elnath |
Fomalhaut |
Markab |
Pollux |
Star Identification |
| A |
On 14 January your 1922 DR
position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star
bearing 054°T at an observed altitude (Ho) of 07°52.1'. The chronometer
reads 03h 25m 43s, and is 03m 15s fast. What star did you observe? |
Pollux |
Markab |
Elnath |
Fomalhaut |
Star Identification |
| C |
On 22 June your 0424 ZT DR
position is LAT 26°18.5' N, LONG 124°18.2' W. You observe an unidentified
star bearing 031°T at an observed altitude (Ho) of 49°26.0'. The chronometer
reads 00h 23m 24s and is 01m 32s slow. What star did you observe? |
Ankaa |
Peacock |
Schedar |
Alioth |
Star Identification |
| B |
On 14 January your 1922 DR
position is LAT 27°18.5'S, LONG 67°18.0'E. You observe an unidentified star
bearing 295°T at an observed altitude (Ho) of 13°50.7'. The chronometer
reads 03h 25m 43s, and is 03m 15s fast. What star did you observe? |
Pollux |
Markab |
Elnath |
Fomalhaut |
Star Identification |
| C |
On 17 March your 0520 DR position
is LAT 27°23.0'N, LONG 39°42.0'W. You observe an unidentified star bearing
110°T at an observed altitude (Ho) of 50°47.2'. The chronometer reads 08h
22m 15s, and is 01m 45s fast. What star did you observe? |
Deneb |
Alkaid |
Altair |
Arcturus |
Star Identification |
| C |
On 17 March your 0520 DR position
is LAT 27°23.0'N, LONG 39°42.0'W. You observe an unidentified star bearing
313°T at an observed altitude (Ho) of 43°03.8'. The chronometer reads 08h
22m 15s and is 01m 45s fast. What star did you observe? |
Altair |
Deneb |
Alkaid |
Arcturus |
Star Identification |
| C |
On 17 March your 1845 DR position
is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing
340°T at an observed altitude (Ho) of 66°25.1'. The chronometer reads 10h
47m 49s, and is 1m 54s fast. What star did you observe? |
Mirfak |
Rigel |
Capella |
Pollux |
Star Identification |
| C |
On 17 March your 1845 DR position
is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing
320°T at an observed altitude (Ho) of 50°02.9'. The chronometer reads 10h
47m 49s, and is 1m 54s fast. What star did you observe? |
Capella |
Pollux |
Mirfak |
Rigel |
Star Identification |
| D |
On 17 March your 1845 DR position
is LAT 25°10.0'N, LONG 66°48.0'W. You observe an unidentified star bearing
077°T at an observed altitude (Ho) of 67°04.4'. The chronometer reads 10h
47m 49s, and is 1m 54s fast. What star did you observe? |
Capella |
Rigel |
Mirfak |
Pollux |
Star Identification |
| D |
On 23 September your 1836
DR position is LAT 25°18'S, LONG 162°23'E. You observe an unidentified star
bearing 000°T at an observed altitude (Ho) of 26°18'. The chronometer reads
07h 34m 12s, and is 01m 54s slow. What star did you observe? |
Canopus |
Antares |
Achernar |
Vega |
Star Identification |
| B |
On 23 September your 1836
DR position is LAT 25°18'S, LONG 162°36'E. You observe an unidentified star
bearing 148°T at an observed altitude (Ho) of 13°32'. The chronometer reads
07h 34m 12s, and is 01m 54s slow. Which star did you observe? |
Sirius |
Achernar |
Canopus |
Antares |
Star Identification |
| D |
On 23 September your 1836
DR position is LAT 25°18'S, LONG 162°36'E. You observe an unidentified star
bearing 022°T at an observed altitude (Ho) of 13°16'. The chronometer reads
07h 34m 12s, and is 01m 54s slow. What star did you observe? |
Antares |
Sirius |
Achernar |
Deneb |
Star Identification |
| C |
On 17 March your 0520 DR position
is LAT 27°23.0'N, LONG 39°42.0'W. At this time you observe an unidentified
star bearing 270°T with an observed altitude of 46°30.2'. The chronometer
reads 08h 22m 15s, and is 01m 45s fast. What star did you observe? |
Deneb |
Altair |
Arcturus |
Alkaid |
Star Identification |
| B |
On 22 May your 0437 ZT DR
position is LAT 25°18.5' N, LONG 51°18.0' W. You observe an unidentified
star bearing 097°T at an observed altitude (Ho) of 48°20.0'. The chronometer
reads 07h 40m 40s and is 03m 24s fast. What star did you observe? |
Hamal |
Markab |
Sabik |
Diphda |
Star Identification |
| A |
At 1845 zone time, on 17 March,
while taking stars for an evening fix, you observe an unidentified star
bearing 200°T at an observed altitude of 53°45.0'. Your DR position at the
time of the sight is LAT 25°10.0'N, LONG 66°48.0'W. The chronometer time
of the sight is 10h 47m 49s, and the chronometer error is 1m 54s fast. Your
vessel is steaming on a course of 290°T at a speed of 18.0 knots. What star
did you observe? |
Rigel |
Pollux |
Altair |
Mirfak |
Star Identification |
| D |
On 22 April your 1852 ZT DR
position is LAT 23°54.5' N, LONG 117°36.8' W. You observe an unidentified
star bearing 129°T at an observed altitude (Ho) of 27°10.0'. The chronometer
reads 02h 54m 53s and is 02m 51s fast. What star did you observe? |
Diphda |
Betelgeuse |
Arcturus |
Gienah |
Star Identification |
| A |
On 22 March your 0519 ZT DR
position is LAT 27°20.6' N, LONG 69°25.6' W. You observe an unidentified
star bearing 094°T, at an observed altitude (Ho) of 30°15.0'. The chronometer
reads 10h 16m 47s and is 02m 15s slow. What star did you observe? |
Enif |
Rigel |
Acamar |
Menkar |
Star Identification |
| D |
On 22 March your 1834 ZT DR
position is LAT 26°13.5' S, LONG 108°36.5' W. You observe an unidentified
star bearing 077°T, at an observed altitude (Ho) of 43°10.5'. The chronometer
reads 01h 32m 37s and is 01m 50s slow. What star did you observe? |
Regulus |
Menkar |
Rigel |
Alphard |
Star Identification |
| A |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 019.0°T at a sextant altitude
(hs) of 53°56.2'. The index error is 0.5' on the arc, and the height of
eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Mizar |
Mimosa |
Gamma Ursae Minoris |
Phecda |
Star Identification |
| C |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 162°T at a sextant altitude
(hs) of 28°36.5'. The index error is 0.5'on the arc, and the height of eye
is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Mimosa |
Gamma Virginis |
Iota Centauri |
Spica |
Star Identification |
| C |
On 2 October your 1845 DR
position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through
a hole in the clouds at a sextant altitude (hs) of 11°37.6' bearing 066°T.
The index error is 1.3' off the arc, and the height of eye is 42 feet. The
chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe? |
Caph |
Ruckbah |
Algenib |
Scheat |
Star Identification |
| A |
On 2 October your 1845 DR
position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through
a hole in the clouds at a sextant altitude (hs) of 63°29.1' bearing 237.5°T.
The index error is 1.3' off the arc, and the height of eye is 42 feet. The
chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe? |
Kappa Scorpii |
Beta Draconis |
Beta Ophiuchi |
Alpha Arae |
Star Identification |
| A |
On 13 September your 1830
ZT DR position was LAT 23°03'S, LONG 105°16'E when you observe a faint unidentifiable
star through a hole in the clouds. The star bore 132.3°T at a sextant altitude
(hs) of 29°34.6'. The chronometer read 11h 24m 39s and is 5m 08s slow. The
index error is 1.0' off the arc, and the height of eye is 52 feet. What
star did you observe? |
Beta Gruis |
Scheat |
Alpha Indi |
Sigma Capricorni |
Star Identification |
| A |
On 13 September your 1830
ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint
unidentifiable star through a hole in the clouds. The star bore 351.5°T
at a sextant altitude (hs) of 62°05.6'. The chronometer read 11h 24m 39s
and is 5m 08s slow. The index error is 1.0' off the arc, and the height
of eye is 52 feet. What star did you observe? |
Beta Ophiuchi |
Kappa Scorpii |
Alpha Arae |
Alpha Herculis |
Star Identification |
| C |
On 13 September your 1830
ZT DR position was LAT 23°03'S, LONG 105°16'E when you observed a faint
unidentifiable star through a hole in the clouds. The star bore 265.0°T
at a sextant altitude (hs) of 62°25.4'. The chronometer read 11h 24m 39s
and is 5m 08s slow. The index error is 1.0' off the arc, and the height
of eye is 52 feet. What star did you observe? |
Sigma Ophiuchi |
Alcyone |
Dschubba |
Gamma Lupi |
Star Identification |
| D |
On 13 September your 1830
ZT DR position was LAT 23°03'S, LONG 105°16'E, when you observed a faint
unidentifiable star through a hole in the clouds. The star bore 148.0°T
at a sextant altitude (hs) of 32°24.3'. The chronometer read 11h 24m 39s
and is 05m 08s slow. The index error is 1.0' off the arc, and the height
of eye is 52 feet. What star did you observe? |
Beta Aquarii |
Alpha Indi |
Beta Gruis |
Alpha Tucanae |
Star Identification |
| A |
On 2 October your 1845 DR
position was LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through
a hole in the clouds at a sextant altitude (hs) of 20°45.6' T, bearing 201.5°T.
The index error is 1.3' off the arc, and the height of eye is 42 feet. The
chronometer reads 07h 46m 19s and is 00m 51s fast. What star did you observe? |
Alpha Muscae |
Muhlifain |
Beta Corvi |
Cor Caroli |
Star Identification |
| B |
On 12 June your 1945 DR position
is LAT 21°47.0'N, LONG 46°52.0'W when you observe a faint unidentifiable
star through a break in the clouds. The star bears 130°T at a sextant altitude
(hs) of 45°21.2'. The index error is 0.5' on the arc, and the height of
eye is 45 feet. The chronometer reads 10h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Epsilon Leonis |
Beta Librae |
Theta Carinae |
Zeta Puppis |
Star Identification |
| A |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 282.5°T at a sextant altitude
(hs) of 14°22.3'. The index error is 0.5'on the arc, and the height of eye
is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Alhena |
Mirzam |
Wezen |
Menkalinan |
Star Identification |
| D |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 313°T at a sextant altitude
(hs) of 14°56.3'. The index error is 0.5' on the arc, and the height of
eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Mirzam |
Theta Aurigae |
Alnitak |
Menkalinan |
Star Identification |
| A |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 270°T at a sextant altitude
(hs) of 65°41.7'. The index error is 0.5' on the arc, and the height of
eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Algeiba |
Epsilon Leonis |
Merak |
Scheat |
Star Identification |
| A |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 031°T at a sextant altitude
(hs) of 70°10.3'. The index error is 0.5' on the arc, and the height of
eye is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Cor Caroli |
Sheratan |
Mimosa |
Ruchbah |
Star Identification |
| C |
On 12 June your 1845 DR position
is LAT 21°47'N, LONG 46°52'W when you observe a faint unidentifiable star
through a break in the clouds. The star bears 174.0°T at a sextant altitude
(hs) of 18°58.6'. The index error is 0.5'on the arc, and the height of eye
is 45 feet. The chronometer reads 09h 43m 27s, and the chronometer error
is 1m 46s slow. What star did you observe? |
Almak |
Alpha Muscae |
Muhlifain |
Alpha Hydri |
Star Identification |
| C |
On 2 October your 1845 DR
position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through
a hole in the clouds at a sextant altitude (hs) of 25°19.4' bearing 273°T.
The index error is 1.3' off the arc, and the height of eye is 42 feet. The
chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe? |
Beta Lupi |
Alpha Serpentis |
Beta Librae |
Epsilon Bootis |
Star Identification |
| A |
On 2 October your 1845 DR
position is LAT 28°09.2'S, LONG 167°48.1'E. You observe a faint star through
a hole in the clouds at a sextant altitude (hs) of 68°03.6' bearing 154°T.
The index error is 1.3' off the arc, and the height of eye is 42 feet. The
chronometer reads 07h 46m 19s and is 0m 51s fast. What star did you observe? |
Alpha Indi |
Gamma Aquilae |
Albireo |
Epsilon Cygni |
Star Identification |
| B |
On 16 October evening twilight
will occur at 1746 ZT. Your DR position will be LAT 28°43.2' N, LONG 60°29.8'
W. Considering their magnitude and location, which of the following are
the three best stars to select for a fix at star time? |
Antares, Deneb,
Vega |
Antares, Arcturus,
Polaris |
Deneb, Polaris,
Vega |
Vega, Polaris,
Enif |
Star Selection
for Fix |
| C |
On 3 February your 0451 zone
time DR position is LAT 24°15.0' S, LONG 124°24.0' W. Considering their
magnitude, azimuth and altitude, which group includes the three bodies best
suited for a fix at star time? |
Jupiter, Dubhe,
Antares |
Spica, Venus,
Procyon |
Alphard, Denebola,
Acrux |
Mars, Arcturus,
Spica |
Star Selection
for Fix |
| A |
On 2 February your 0400 zone
time DR position is LAT 24°14.0' N, LONG 163°28.0' W. You are on course
322°T at a speed of 22 knots. Considering their magnitude, azimuth, and
altitude, which group includes the three bodies best suited for a fix at
star time? |
Saturn, Antares,
Rasalhague |
Jupiter, Spica,
Denebola |
Jupiter, Saturn,
Polaris |
Saturn, Polaris,
Zubenelgenubi |
Star Selection
for Fix |
| D |
On 16 July your 1810 zone
time DR position is LAT 24°16.5' S, LONG 162°52.0' E. Considering their
magnitude, azimuth, and altitude, which group includes the three bodies
best suited for a fix at star time? |
Arcturus, Spica,
Antares |
Vega, Hadar, Venus |
Pollux, Mars,
Deneb |
Jupiter, Alphard,
Alphecca |
Star Selection
for Fix |
| B |
On 3 February your 0547 zone
time DR position is LAT 24°18.5' N, LONG 167°25.0' E. Considering their
magnitude, azimuth, and altitude, which group includes the three bodies
best suited for a fix at star time? |
Jupiter, Denebola,
Regulus |
Regulus, Deneb,
Antares |
Altair, Saturn,
Regulus |
Arcturus, Kochab,
Venus |
Star Selection
for Fix |
| A |
On 11 November your 0200 zone
time DR position is LAT 26°32' S, LONG 154°16' E. You are on course 058°T
at a speed of 21 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three bodies best suited for a fix at star time? |
Mars, Betelgeuse,
Miaplacidus |
Saturn, Peacock,
Rigel |
Polaris, Regulus,
Rigel |
Jupiter, Spica,
Canopus |
Star Selection
for Fix |
| B |
On 29 April your 0300 ZT DR
position is LAT 28°39' N, LONG 168°03' E. You are on course 108°T at a speed
of 22 knots. Considering their magnitude, azimuth, and altitude, which group
includes the three bodies best suited for a fix at star time? |
Deneb, Dubhe,
Zubenelgenubi |
Moon, Alpheratz,
Polaris |
Moon, Altair,
Sabik |
Venus, Polaris,
Arcturus |
Star Selection
for Fix |
| A |
On 24 March your vessel is
enroute from Cadiz to Norfolk. Evening twilight will occur at 1830 zone
time and your vessel's DR position will be LAT 35°06' N, LONG 60°48' W.
Considering their azimuth, altitude, and magnitude, which group of stars
is best suited for plotting a star fix at star time? |
Sirius, Dubhe,
Mirfak |
Regulus, Denebola,
Alkaid |
Adhara, Procyon,
Alphard |
Adhara, Rigel,
Suhail |
Star Selection
for Fix |
| C |
On 28 October morning twilight
will occur around 0524 ZT. Your DR position is LAT 25°25.0' N, LONG 32°33.3'
W. Considering their magnitude and location, which group will be the three
stars best suited to observe for a star fix at star time? |
Sirius, Hamal,
Denebola |
Sirius, Mirfak,
Hamal |
Sirius, Capella,
Denebola |
Sirius, Denebola,
Dubhe |
Star Selection
for Fix |
| D |
On 23 July your 1700 zone
time DR position is LAT 27°29' N, LONG 129°26' W. You are on course 079°T
at a speed of 20 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three bodies best suited for a fix at star time? |
Antares, Polaris,
Altair |
Jupiter, Saturn,
Polaris |
Arcturus, Jupiter,
Denebola |
Spica, Sabik,
Vega |
Star Selection
for Fix |
| A |
On 23 March your 1600 ZT DR
position is LAT 27°16.3' N, LONG 156°48.2' W. You are on course 063°T at
a speed of 18.0 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three stars best suited for a fix at star time? |
Hamal, Rigel,
Alphard |
Arcturus, Regulus,
Sirius |
Betelgeuse, Dubhe,
Regulus |
Procyon, Sirius,
Capella |
Star Selection
for Fix |
| D |
On 15 October your 0300 zone
time DR position is LAT 27°14' S, LONG 99°46' E. You are on course 128°T
at a speed of 19 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three bodies best suited for a fix at star time? |
Achernar, Suhail,
Alphard |
Jupiter, Alphard,
Betelgeuse |
Mars, Regulus,
Canopus |
Achernar, Procyon,
Aldebaran |
Star Selection
for Fix |
| B |
On 20 June your 1742 zone
time DR position is LAT 24°55.0' S, LONG 8°19.6' E. Considering their magnitude,
azimuth, and altitude, which three stars are best suited for a fix at star
time? |
Spica, Arcturus,
Alioth |
Regulus, Canopus,
Antares |
Arcturus, Achernar,
Pollux |
Avior, Sabik,
Fomalhaut |
Star Selection
for Fix |
| A |
On 24 August your vessel is
enroute from Perth, Australia, to Bombay, India. Evening twilight will occur
at 1807 zone time and your vessel's DR position will be LAT 27°17.0' S,
LONG 83°17.0' E. Considering their magnitude and location, what are the
three stars best suited to observe for a fix at star time? |
Spica, Altair,
Acrux |
Arcturus, Antares,
Atria |
Pollux, Canopus,
Hamal |
Rasalhague, Spica,
Kochab |
Star Selection
for Fix |
| C |
On 1 October you determine
the zone time of evening twilight will be 1835. Your DR position will be
LAT 27°18.0' N, LONG 48°52.0' W. Considering their magnitude and location,
which group of three stars are best suited to be used in obtaining a fix
at star time? |
Diphda, Hamal,
Mirfak |
Altair, Rasalhague,
Vega |
Alphecca, Kochab,
Deneb |
Antares, Rigil
Kentaurus, Peacock |
Star Selection
for Fix |
| C |
On 3 December evening twilight
for your vessel will occur at 1901 zone time. Your vessel's DR position
will be LAT 24°18.5' S, LONG 110°30.6' W. Considering their magnitude and
location, what are the three stars best suited to observe for a fix at star
time? |
Rigel, Canopus,
Regulus |
Canopus, Hamal,
Deneb |
Alpheratz, Achernar,
Nunki |
Antares, Fomalhaut,
Mirfak |
Star Selection
for Fix |
| A |
On 10 October your 1500 zone
time DR position is LAT 27°35.6' S, LONG 44°49.0' W. You are on course 342°T
at a speed of 24 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three bodies best suited for a fix at star time? |
Moon, Al Na'ir,
Rigil Kentaurus |
Venus, Moon, Fomalhaut |
Venus, Arcturus,
Hamal |
Deneb, Spica,
Markab |
Star Selection
for Fix |
| D |
On 10 June your 1712 zone
time DR position is LAT 25°10.0' S, LONG 06°58.0' E. You are on course 213°T
at a speed of 9.0 knots. Considering their magnitude, azimuth, and altitude,
which group includes the three stars best suited for a fix at star time? |
Procyon, Antares,
Sirius |
Sirius, Procyon,
Regulus |
Acrux, Canopus,
Regulus |
Acrux, Procyon,
Arcturus |
Star Selection
for Fix |
| A |
On 3 February your 0550 zone
time DR position is LAT 26°16.0' N, LONG 112°05.0' W. Considering their
magnitude, azimuth, and altitude, which group includes the three bodies
best suited for a fix at star time? |
Spica, Kochab,
Rasalhague |
Vega, Antares,
Dubhe |
Spica, Antares,
Saturn |
Venus, Regulus,
Vega |
Star Selection
for Fix |
| D |
On 28 February your 1850 zone
time DR position is LAT 27°49.0' N, LONG 159°24.0' W. Considering their
magnitude, azimuth, and altitude, which group includes the three stars best
suited for a fix at star time? |
Hamal, Alkaid,
Canopus |
Bellatrix, Vega,
Regulus |
Sirius, Mirfak,
Elnath |
Rigel, Schedar,
Regulus |
Star Selection
for Fix |
| B |
On 17 July your 1951 zone
time DR position is LAT 24°26.0' N, LONG 51°16.0' W. Considering their magnitude,
azimuth, and altitude, which group includes the three bodies best suited
for a fix at star time? |
Mars, Vega, Dubhe |
Kochab, Jupiter,
Rasalhague |
Hadar, Deneb,
Alphard |
Regulus, Venus,
Antares |
Star Selection
for Fix |
| D |
On 8 November your 1731 zone
time DR position is LAT 27°16.0'N, LONG 137°25.0'W. Considering their magnitude,
azimuth, and altitude, which group includes the three stars best suited
for a fix at star time? |
Sirius, Hamal,
Dubhe |
Antares, Rasalhague,
Altair |
Peacock, Ankaa,
Al Na'ir |
Alphecca, Fomalhaut,
Schedar |
Star Selection
for Fix |
| A |
On 4 September your 1813 zone
time DR position is LAT 24°18.0' S, LONG 95°16.0' E. Considering their magnitude,
azimuth, and altitude, which group includes the three stars best suited
for a fix at star time? |
Rasalhague, Fomalhaut,
Spica |
Betelgeuse, Acrux,
Hamal |
Enif, Miaplacidus,
Alkaid |
Deneb, Altair,
Vega |
Star Selection
for Fix |
| D |
On 24 July your 1912 zone
time DR position is LAT 24°28.0' N, LONG 73°46.5' W. Considering their magnitude,
azimuth, and altitude, which group includes the three stars best suited
for a fix at star time? |
Vega, Deneb, Regulus |
Fomalhaut, Rigel,
Pollux |
Arcturus, Acrux,
Hadar |
Spica, Altair,
Alioth |
Star Selection
for Fix |
| B |
On 16 July your 1920 ZT DR
position is LAT 25°36.0' N, LONG 172°18.9' W. Considering their magnitude,
azimuth, and altitude, which group includes the three bodies best suited
for a fix at star time? |
Vega, Mars, Antares |
Venus, Antares,
Vega |
Saturn, Acrux,
Spica |
Rasalhague, Spica,
Arcturus |
Star Selection
for Fix |
| C |
On 12 February your 0900 zone
time DR position is LAT 16°43.0'N, LONG 51°42.0'W. Your vessel is on course
093°T at a speed of 18.5 knots. What is the zone time of local apparent
noon (LAN)? |
1233 |
1230 |
1237 |
1226 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 24 January your 0700 zone
time DR position is LAT 22°25.0'N, LONG 46°10.0'W. Your vessel is on course
110°T at a speed of 12.0 knots. What is the zone time of local apparent
noon (LAN)? |
1208 |
1212 |
1215 |
1203 |
Zone Time of Local
Apparent Noon (LAN) |
| D |
On 31 January your 0920 zone
time DR position is LAT 24°16.0'S, LONG 151°33.0'E. Your vessel is on course
258°T at a speed of 18.5 knots. What is the zone time of local apparent
noon (LAN)? |
1202 |
1215 |
1207 |
1211 |
Zone Time of Local
Apparent Noon (LAN) |
| A |
On 10 July your 0930 zone
time DR position is LAT 26°31.0'S, LONG 4°41.0'E. Your vessel is on course
308°T at a speed of 22.0 knots. What is the zone time of local apparent
noon (LAN)? |
1149 |
1153 |
1144 |
1159 |
Zone Time of Local
Apparent Noon (LAN) |
| A |
On 16 November your 0800 zone
time DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on course
252°T at a speed of 14.5 knots. What is the zone time of local apparent
noon (LAN)? |
1139 |
1135 |
1131 |
1144 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 17 March your 0800 zone
time DR position is LAT 21°27.0'N, LONG 65°25.0'W. Your vessel is on course
105°T at a speed of 17.5 knots. What is the zone time of local apparent
noon (LAN)? |
1218 |
1210 |
1225 |
1231 |
Zone Time of Local
Apparent Noon (LAN) |
| A |
On 9 February your 0830 zone
time DR position is LAT 22°19.0'N, LONG 64°37.0'E. Your vessel is on course
128°T at a speed of 19.0 knots. What is the zone time of local apparent
noon? |
1152 |
1201 |
1205 |
1156 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 7 February your 0800 zone
time DR position is LAT 22°16.0'N, LONG 92°26.0'W. Your vessel is on course
270°T at a speed of 20.0 knots. What is the zone time of local apparent
noon (LAN)? |
1226 |
1222 |
1230 |
1218 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 12 February your 0930 zone
time DR position is LAT 25°20.0'N, LONG 30°40.0'W. Your vessel is on course
135°T at a speed of 11.2 knots. What is the zone time of local apparent
noon (LAN)? |
1224 |
1220 |
1215 |
1210 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 14 October your 0800 ZT
DR position is LAT 28°22.0'N, LONG 161°17.0'E. Your vessel is on course
116°T at a speed of 17.5 knots. What is the ZT of local apparent noon (LAN)? |
1142 |
1152 |
1156 |
1148 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 3 October your 0830 ZT
position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course 280°T
at a speed of 19.0 knots. What is the ZT of local apparent noon (LAN)? |
1151 |
1201 |
1154 |
1158 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 26 September your 0830
zone time DR position is LAT 23°04.0'N, LONG 129°16.0'E. Your vessel is
on course 119°T at a speed of 20.0 knots. What is the zone time of local
apparent noon (LAN)? |
1205 |
1214 |
1210 |
1158 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 2 April your 0900 zone
time DR position is LAT 28°04.0'S, LONG 94°14.0'E. Your vessel is on course
316°T at a speed of 18.5 knots. What is the zone time of local apparent
noon (LAN)? |
1143 |
1146 |
1149 |
1138 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 16 January your 0930 ZT
DR position is LAT 26°07.0'S, LONG 51°43.0'E. Your vessel is on course 238°T
at a speed of 17.0 knots. What is the ZT of local apparent noon (LAN)? |
1152 |
1145 |
1156 |
1148 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 23 June your 0900 zone
time DR position is LAT 21°26.0'N, LONG 137°46.0'W. Your vessel is on course
059°T at a speed of 19.0 knots. What is the zone time of local apparent
noon (LAN)? |
1214 |
1210 |
1205 |
1159 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 14 October your 0800 zone
time (ZT) dead reckoning position is LAT 28°22.0'N, LONG 161°17.0'E. Your
vessel is on course 116°T at a speed of 17.5 knots. What is the ZT of local
apparent noon (LAN)? |
1202 |
1156 |
1151 |
1148 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 16 November your 0800 ZT
DR position is LAT 25°11.0'N, LONG 117°41.0'W. Your vessel is on a course
of 252°T at a speed of 14.5 knots. What is the ZT of local apparent noon
(LAN)? |
1143 |
1139 |
1135 |
1146 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 3 October your 0830 zone
time DR position is LAT 26°15.0'S, LONG 73°16.0'E. Your vessel is on course
280°T at a speed of 19.0 knots. What is the zone time of local apparent
noon (LAN)? |
1155 |
1158 |
1201 |
1152 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 20 June your 0800 zone
time DR position is LAT 21°02.0'N, LONG 152°50.0'E. Your vessel is on course
265°T at a speed of 15.0 knots. What is the zone time of local apparent
noon (LAN)? |
1203 |
1154 |
1159 |
1149 |
Zone Time of Local
Apparent Noon (LAN) |
| A |
On 26 September your 0830
DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is on a course
of 119°T at a speed of 20.0 knots. What is the zone time of local apparent
noon (LAN)? |
1124 |
1142 |
1128 |
1146 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
Your 0830 DR position is LAT
27°33'S, LONG 79°17'E. Your vessel is on a course of 066°T, at a speed of
19.5 knots. Determine the time of LAN on 10 December. |
1136 |
1131 |
1215 |
1153 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
You are keeping ZD +4 on your
vessel. On 21 June at 0906 DST, your position is LAT 30°48.0'N, LONG 71°00.0'W.
You are on a course of 167°T at 15.2 knots. At what time will local apparent
noon (LAN) occur ZT at your vessel? You are keeping DST. |
1218 |
1145 |
1245 |
1202 |
Zone Time of Local
Apparent Noon (LAN) |
| D |
On 27 August your 0900 zone
time DR position is LAT 24°25.0'N, LONG 94°20.0'W. Your vessel is on course
071°T at a speed of 20.0 knots. What is the zone time of local apparent
noon (LAN)? |
1208 |
1158 |
1206 |
1214 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 25 April your 0930 zone
time position is LAT 28°35'S, LONG 82°30'W. Your vessel is on course 300°T
at a speed of 20.0 knots. Determine the zone time of LAN. |
1225 |
1131 |
1211 |
1158 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 25 April your 1130 DR position
is LAT 24°50.0'N, LONG 61°25.0'W. Your vessel is on a course of 300°T at
a speed of 16.0 knots. Determine the zone time of (LAN) for your vessel. |
1154 |
1204 |
1202 |
1156 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
Your 0900 DR position is LAT
23°16'N, LONG 146°12'E. Your vessel is on a course of 286°T, at a speed
of 14.5 knots. Determine the zone time of LAN on 14 March. |
1223 |
1151 |
1228 |
1209 |
Zone Time of Local
Apparent Noon (LAN) |
| A |
On 10 October your 0930 zone
time position is LAT 25°00.0'S, LONG 164°38.6'W. Your vessel is on course
180°T at a speed to 10.0 knots. What is the zone time of local apparent
noon (LAN)? |
1145 |
1151 |
1206 |
1203 |
Zone Time of Local
Apparent Noon (LAN) |
| D |
On 12 July your 0800 ZT DR
position is LAT 24°15.0'N, LONG 132°30.0'W. Your vessel is on course 045°T
at a speed of 15.0 knots. What is the ZT of local apparent noon (LAN)? |
1146 |
1159 |
1148 |
1152 |
Zone Time of Local
Apparent Noon (LAN) |
| D |
On 26 September your 0830
zone time DR position is LAT 26°04.0'N, LONG 129°16.0'W. Your vessel is
on course 119°T at a speed of 20.0 knots. What is the zone time of local
apparent noon (LAN)? |
1133 |
1127 |
1130 |
1124 |
Zone Time of Local
Apparent Noon (LAN) |
| B |
On 3 May your 1009 zone time
DR position is LAT 30°01.0'N, LONG 123°15.0'W. Your vessel is on course
330°T at a speed of 8.6 knots. What is the zone time of local apparent noon
(LAN)? |
1206 |
1211 |
1214 |
1208 |
Zone Time of Local
Apparent Noon (LAN) |
| D |
On 4 January your 0800 zone
time DR position is LAT 25°25.0 S, LONG 16°09.0'W. Your vessel is on course
290°T at a speed of 13.5 knots. What is the zone time of local apparent
noon (LAN)? |
1157 |
1205 |
1209 |
1213 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 25 June your 0900 zone
time DR position is LAT 24°10.0'S, LONG 148°30.0'W. Your vessel is on a
course of 230°T at a speed of 18.0 knots. What is the zone time of local
apparent noon (LAN)? |
1156 |
1154 |
1200 |
1204 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 8 April your 0830 zone
time DR position is LAT 22°49.0'N, LONG 84°37.0'W. Your vessel is on course
228° T at a speed of 19.0 knots. What is the zone time of local apparent
noon (LAN)? |
1147 |
1154 |
1144 |
1150 |
Zone Time of Local
Apparent Noon (LAN) |
| C |
On 13 August your 0345 ZT
DR position is LAT 21°35.0' N, LONG 135°26.0'W. You are on course 052°T
at a speed of 14 knots. What will be the zone time of sunrise at your vessel? |
0443 |
0449 |
0536 |
0540 |
Zone Time of Sunrise |
| C |
On 16 February your 0300 ZT
DR position is LAT 28°32.0'S, LONG 176°49.0'E. You are on course 082°T at
a speed of 21 knots. What will be the zone time of sunrise at your vessel? |
0645 |
0631 |
0552 |
0534 |
Zone Time of Sunrise |
| D |
On 27 September your 0345
ZT DR position is LAT 26°18.0'S, LONG 4°18.0'W. You are on course 271°T
at a speed of 15 knots. What will be the zone time of sunrise at your vessel? |
0555 |
0525 |
0545 |
0605 |
Zone Time of Sunrise |
| D |
On 25 December your 0330 ZT
DR position is LAT 25°15.0'N, LONG 32°16.0'W. You are on course 145°T at
a speed of 20 knots. What will be the zone time of sunrise at your vessel? |
0635 |
0623 |
0641 |
0647 |
Zone Time of Sunrise |
| B |
At 0500 zone time on 21 August,
your DR position is LAT 47°00'N, LONG 125°15'W. You are steering 000°T at
a speed of 9.8 knots. What is the zone time of sunrise? |
0535 |
0525 |
0529 |
0531 |
Zone Time of Sunrise |
| C |
On 8 August your 0400 ZT DR
position is LAT 23°16.0'S, LONG 105°33.0'W. You are on course 295°T at a
speed of 25 knots. What will be the zone time of sunrise at your vessel? |
0629 |
0623 |
0636 |
0654 |
Zone Time of Sunrise |
| A |
At 0400 zone time on 24 June,
your DR position is LAT 23°10.0'N, LONG 085°33'W. You are steering 295°T
at a speed of 10.0 knots. What is the zone time of sunrise? |
0458 |
0504 |
0510 |
0452 |
Zone Time of Sunrise |
| D |
On 13 February at 0325 zone
time, your DR position is LAT 23°20'N, LONG 155°15'W. You are steering 240°T
at a speed of 13.6 knots. What is the zone time of sunrise? |
0711 |
0652 |
0706 |
0657 |
Zone Time of Sunrise |
| B |
Your 0000 zone time position
on 13 June is LAT 24°35'N, LONG 142°26'E. Your vessel is on course 245°T,
speed is 13.5 knots. What is the zone time of sunrise? |
0503 |
0445 |
0528 |
0440 |
Zone Time of Sunrise |
| C |
On 22 June your 0400 zone
time DR position is LAT 23°00'N, LONG 81°45'W. You are steaming on course
110°T at a speed of 8.6 knots. What will be the zone time of sunrise at
your vessel? |
0537 |
0547 |
0541 |
0545 |
Zone Time of Sunrise |
| B |
On 17 April your vessel is
enroute from the Panama Canal to Kobe, Japan. Your 0400 zone time DR position
is LAT 26°12.0'N, LONG 126°12.0'W. Your vessel is on course 285°T at a speed
of 18 knots. What will be the zone time of sunrise at your vessel? |
0541 |
0602 |
0552 |
0535 |
Zone Time of Sunrise |
| C |
At 0327 ZT on 29 May, your
DR position is LAT 25°00'N, LONG 64°15'W. You are steering 270°T at a speed
of 13.6 knots. What is the zone time of sunrise? |
0536 |
0548 |
0529 |
0521 |
Zone Time of Sunrise |
| A |
On 27 March your 0330 zone
time DR position is LAT 23°32'N, LONG 154°47'E. Your vessel is on a course
of 105°T at a speed of 20 knots. What will be the zone time of sunrise at
your vessel? |
0534 |
0612 |
0557 |
0624 |
Zone Time of Sunrise |
| C |
On 12 June your 0400 ZT DR
position is LAT 22°31.0'N, LONG 31°45.0'W. You are on course 240°T at a
speed of 16.5 knots. What will be the zone time of sunrise at your vessel? |
0645 |
0507 |
0523 |
0515 |
Zone Time of Sunrise |
| C |
On 17 May your 0300 ZT DR
position is LAT 27°21.0'N, LONG 146°14.0'E. You are on course 107°T at a
speed of 18 knots. What will be the zone time of sunrise at your vessel? |
0511 |
0457 |
0522 |
0519 |
Zone Time of Sunrise |
| C |
On 16 March your 0330 ZT DR
position is LAT 22°36.0'S, LONG 76°16.0'E. You are on course 098°T at a
speed of 16 knots. What will be the ZT of sunrise at your vessel? |
0608 |
0545 |
0553 |
0600 |
Zone Time of Sunrise |
| D |
On 2 January you are on a
course of 094°T at a speed of 20 knots. At 0430 ZT, your DR position is
LAT 24°12'N, LONG 71°24'W. Determine the zone time of sunrise. |
0636 |
0701 |
0644 |
0627 |
Zone Time of Sunrise |
| A |
On 16 August your 1600 ZT
DR position is LAT 26°17.0'N, LONG 165°17.0'E. You are on course 301°T at
a speed of 15 knots. What will be the zone time of sunset at your vessel? |
1838 |
1832 |
1845 |
1827 |
Zone Time of Sunset |
| A |
On 18 October your 1330 ZT
DR position is LAT 27°32.0'N, LONG 154°47.0'W. You are on course 115°T at
a speed of 20 knots. What will be the zone time of sunset at your vessel? |
1742 |
1751 |
1729 |
1715 |
Zone Time of Sunset |
| A |
On 17 November your 1530 ZT
DR position is LAT 27°13.0'S, LONG 153°21.0'W. You are on course 261°T at
a speed of 14 knots. What will be the ZT of sunset at your vessel? |
1845 |
1828 |
1834 |
1813 |
Zone Time of Sunset |
| C |
On 22 November your 1400 ZT
DR position is LAT 22°16.0'N, LONG 136°37.0'E. You are on course 038°T at
a speed of 22 knots. What will be the zone time of sunset at your vessel? |
1710 |
1714 |
1705 |
1718 |
Zone Time of Sunset |
| D |
On 1 December your 1600 ZT
DR position is LAT 22°48.0'S, LONG 91°26.0'E. You are on course 327°T at
a speed of 16 knots. What will be the zone time of sunset at your vessel? |
1831 |
1823 |
1847 |
1827 |
Zone Time of Sunset |
| C |
On 10 December your 1300 zone
time (ZT) DR position is LAT 26°27.0'S, LONG 79°04.0'E. You are on course
068°T at a speed of 14 knots. What will be the zone time of sunset at your
vessel? |
1908 |
1846 |
1824 |
1854 |
Zone Time of Sunset |
| D |
At 1400 zone time on 11 April,
your DR position is LAT 25°40'N, LONG 91°00'W. You are steering 180°T at
a speed of 10.0 knots. What is your zone time of sunset? |
1820 |
1812 |
1816 |
1825 |
Zone Time of Sunset |
| B |
At 1800 zone time, on 7 December,
your DR position is LAT 22°48'S, LONG 91°26'W. You are steering 320°T at
a speed of 14.0 knots. What is the zone time of sunset? |
1830 |
1842 |
1836 |
1852 |
Zone Time of Sunset |
| B |
At 1544 zone time on 5 October
your DR position is LAT 25°00'N, LONG 60°15'W. You are steering 270°T at
a speed of 6.8 knots. What is the zone time of sunset? |
1737 |
1745 |
1741 |
1728 |
Zone Time of Sunset |
| D |
At 1730 zone time, on 3 March,
your DR position is LAT 16°00'S, LONG 80°00'W. You are steering 000°T at
a speed of 7.5 knots. What is the zone time of sunset? |
1834 |
1852 |
1829 |
1843 |
Zone Time of Sunset |
| C |
On 19 July your 1500 ZT DR
position is LAT 28°25.0'N, LONG 120°28.0'W. You are on course 233°T at a
speed of 10 knots. What will be the zone time of sunset at your vessel? |
1853 |
1909 |
1901 |
1842 |
Zone Time of Sunset |
| A |
On 1 November your 1600 zone
time DR position is LAT 27°48'S, LONG 91°26'E. Your vessel is on a course
of 327° T at a speed of 16 knots. What will be the zone time of sunset at
your vessel? |
1813 |
1836 |
1829 |
1821 |
Zone Time of Sunset |
| D |
On 5 May your 1800 ZT DR position
is LAT 26°11.5'N, LONG 65°35.0'W. You are on course 270°T at a speed of
12 knots. What will be the ZT of sunset at your vessel? |
1840 |
1901 |
1825 |
1857 |
Zone Time of Sunset |
| D |
On 10 November your 1630 zone
time DR position is LAT 25°10.0'N, LONG 71°12.0'W. You are on course 335°T
at a speed of 24 knots. What will be the zone time of sunset at your vessel? |
1650 |
1715 |
1730 |
1700 |
Zone Time of Sunset |
| A |
On 28 June your 1820 ZT DR
position is LAT 16°00.0'N, LONG 31°00.0'W. You are on course 310°T at a
speed of 18 knots. What will be the zone time of sunset at your vessel? |
1840 |
1836 |
1828 |
1832 |
Zone Time of Sunset |
| D |
On 5 May your 1300 ZT DR position
is LAT 25°16.0'S, LONG 12°30.0'W. You are on course 012°T at a speed of
14 knots. What will be the zone time of sunset at your vessel? |
1702 |
1730 |
1741 |
1719 |
Zone Time of Sunset |
| A |
On 10 April, your 1630 ZT
DR position is LAT 21°03.0'N, LONG 63°11.0'W. You are on course 324°T at
a speed of 22 knots. What will be the zone time of sunset at your vessel? |
1833 |
1805 |
1814 |
1818 |
Zone Time of Sunset |
