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Preview Compass Course Questions
B  You desire to make good a true course of 236°. The variation is 8°E, magnetic compass deviation is 1°E, and gyrocompass error is 3°W. A southsoutheasterly wind produces a 1° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?  246°psc  226°psc  244°psc  228°psc  Compass Error, Leeway 
D  Your vessel is steering 195° per standard magnetic compass. Variation for the area is 13°W, and the deviation is 4°E. The wind is from the westsouthwest, producing a 2° leeway. Which true course are you making good?  178°T  180°T  182°T  184°T  Compass Error, Leeway 
C  You are steering a magnetic compass course of 075°. The variation for the area is 10°W, and the compass deviation is 5°E. What is the true course you are steering?  060°T  090°T  070°T  080°T  Compass Error, Leeway 
A  The true course between two points is 057°. Your gyrocompass has an error of 3° east and you make an allowance of 1° leeway for a northnorthwest wind. Which gyro course should be steered to make the true course good?  053°pgc  060°pgc  059°pgc  056°pgc  Compass Error, Leeway 
C  You want to make good a true course of 137°. A northnortheast wind produces a 3° leeway. The variation is 11° west, deviation is 5° east, and gyrocompass error is 2° east. What course must you steer per gyrocompass to make the true course good?  138°pgc  136°pgc  132°pgc  134°pgc  Compass Error, Leeway 
A  You desire to make good a true course of 046°. The variation is 6°E, magnetic compass deviation is 12°W, and the gyrocompass error is 3°W. A northerly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make good the true course?  047°psc  057°psc  049°psc  052°psc  Compass Error, Leeway 
D  Your vessel is steering course 299°psc, variation for the area is 7°W, and deviation is 4°W. The wind is from the southwest, producing a 3° leeway. What true course are you making good?  296°T  299°T  313°T  291°T  Compass Error, Leeway 
D  Your vessel is steering course 027° per standard magnetic compass (psc), variation for the area is 19°W, and deviation is 2°E. The wind is from the northnorthwest, producing a 5° leeway. What true course are you making good?  044°T  005°T  049°T  015°T  Compass Error, Leeway 
A  Your vessel is steering course 149°psc, variation for the area is 13°E, and deviation is 4°E. The wind is from the northeast, producing a 4° leeway. What true course are you making good?  170°T  128°T  136°T  162°T  Compass Error, Leeway 
D  Your vessel is steering course 197°psc, variation for the area is 7°E, and deviation is 4°W. The wind is from the west, producing a 2° leeway. Which true course are you making good?  196°T  192°T  202°T  198°T  Compass Error, Leeway 
C  You are steering
318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E
and the deviation table is extracted below. What will be the true course
made good? {{{ DEVIATION TABLE Magnetic Heading Deviation 300° 2°E 315° 0 330° 2°W}}} 
327°T 
301°T 
329°T 
303°T  Compass Error, Leeway 
C  Your vessel is steering course 216° per standard magnetic compass, variation for the area is 9°W, and deviation is 2°E. The wind is from the east, producing a 5° leeway. What true course are you making good?  227°T  223°T  214°T  204°T  Compass Error, Leeway 
A  Your vessel is steering a course of 337°psc. Variation for the area is 13°W, and deviation is 4°E. The wind is from the south, producing a 3° leeway. Which true course are you making good?  331°T  325°T  349°T  328°T  Compass Error, Leeway 
C  Your vessel is steering course 166°psc, variation for the area is 8°W, and deviation is 3°W. The wind is from the westsouthwest, producing a 2° leeway. What true course are you making good?  175°T  157°T  153°T  179°T  Compass Error, Leeway 
A  Your vessel is steering course 073°psc, variation for the area is 15°E, and deviation is 4°E. The wind is from the southeast, producing a 4° leeway. Which true course are you making good?  088°T  096°T  050°T  058°T  Compass Error, Leeway 
A  Your vessel is steering course 111°psc, variation for the area is 5°E, and deviation is 3°W. The wind is from the northwest, producing a 1° leeway. What true course are you making good?  114°T  108°T  112°T  110°T  Compass Error, Leeway 
C  Your vessel is steering course 284°psc, variation for the area is 6°W, and deviation is 3°E. The wind is from the northnortheast, producing a 3° leeway. What true course are you making good?  290°T  275°T  278°T  284°T  Compass Error, Leeway 
D  Your vessel is steering course 243°psc. Variation for the area is 5°E, and deviation is 2°W. The wind is from the southsoutheast, producing a 2° leeway. What true course are you making good?  242°T  244°T  246°T  248°T  Compass Error, Leeway 
A  Your vessel is steering course 352°psc, variation for the area is 11°E, and deviation is 9°W. The wind is from the northeast, producing a 1° leeway. What true course are you making good?  353°T  351°T  355°T  349°T  Compass Error, Leeway 
D  You desire to make good a true course of 129°. The variation is 7°E, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. An easterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?  126°psc  116°psc  122°psc  114°psc  Compass Error, Leeway 
B  You desire to make good a true course of 203°. The variation is 19°E, magnetic compass deviation is 2°W, and gyrocompass error is 1°E. A westerly wind produces a 3° leeway. What is the course to steer per standard magnetic compass to make the true course good?  223°psc  189°psc  183°psc  210°psc  Compass Error, Leeway 
A  You wish to make
good a course of 258°T, allowing 4° leeway for northerly winds. The variation
is 21°W. What should you steer per standard magnetic compass to make good
258°T? {{{ DEVIATION TABLE Magnetic Heading Deviation 285° 5°E 270° 3°E 255° 1°E 240° 1°W}}} 
278°psc 
288°psc 
242°psc  271°psc  Compass Error, Leeway 
C  You desire to make good a true course of 329°. The variation is 13° W, magnetic compass deviation is 4°E, and gyrocompass error is 2°W. A southerly wind produces a 1° leeway. What is the course to steer per standard magnetic compass to make the true course good?  321°psc  319°psc  337°psc  339°psc  Compass Error, Leeway 
D  You desire to make good a true course of 157°. The variation is 15°E, magnetic compass deviation is 9°W, and gyrocompass error is 3°E. A southwesterly wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?  145°psc  150°psc  147°psc  153°psc  Compass Error, Leeway 
D  You desire to make good a true course of 067°. The variation is 11°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°W. A northwesterly wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make the true course good?  074°psc  064°psc  054°psc  070°psc  Compass Error, Leeway 
A  You desire to make good a true course of 038°. The variation is 5°E, magnetic compass deviation is 4°W, and gyrocompass error is 4°W. A southeasterly wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?  041°psc  033°psc  047°psc  043°psc  Compass Error, Leeway 
C  You desire to make good a true course of 279°. The variation is 8°W, magnetic compass deviation is 3°E, and gyrocompass error is 1°E. A northnorthwesterly wind produces 3° leeway. What is the course to steer per standard magnetic compass (psc) to make the true course good?  290°psc  281°psc  287°psc  284°psc  Compass Error, Leeway 
C  You desire to make good a true course of 347°. The variation is 11°E, magnetic compass deviation is 7°W, and gyrocompass error is 4°W. A north by east wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?  351°psc  339°psc  347°psc  343°psc  Compass Error, Leeway 
A  You desire to make good a true course of 007°. The variation is 5°E, magnetic compass deviation is 3°W, and gyrocompass error is 2°E. A southwest by west wind produces a 2° leeway. What is the course to steer per standard magnetic compass to make the true course good?  003°psc  005°psc  007°psc  009°psc  Compass Error, Leeway 
A  You desire to make good a true course of 132°. The variation is 10°W, magnetic compass deviation is 5°E, and gyrocompass error is 5°W. A northeast by east wind produces a 5° leeway. What is the course to steer per standard magnetic compass to make the true course good?  132°psc  142°psc  137°psc  135°psc  Compass Error, Leeway 
C  You desire to make good a true course of 223°. The variation is 2°E, magnetic compass deviation is 2°E, and gyrocompass error is 1°W. An eastsoutheast wind produces 3° leeway. What is the course to steer per standard magnetic compass to make the true course good?  213°psc  220°psc  216°psc  223°psc  Compass Error, Leeway 
A  The true course from point A to point B is 317°. A SSW wind causes a 4° leeway, variation is 6°W and deviation is 1°E. What is the magnetic compass course to steer to make good the true course?  318°psc  326°psc  313°psc  308°psc  Compass Error, Leeway 
D  You desire to make good a true course of 174°. The variation is 17°W, magnetic compass deviation is 4°W, and gyrocompass error is 4°E. A westsouthwest wind produces a 4° leeway. What is the course to steer per standard magnetic compass to make the true course good?  197°psc  203°psc  195°psc  199°psc  Compass Error, Leeway 
C  You are steering 154° per gyrocompass. The wind is northeast by east, causing 4° leeway. The gyro error is 3° east, variation is 11° west, and deviation is 7°E. What is the true course made good?  158°T  164°T  161°T  151°T  Compass Error, Leeway 
D  While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a northerly wind produces 1° leeway?  084°T  085°T  148°T  086°T  Compass Error, Leeway 
B  While enroute from Cape Town to Rio a vessel's course is 281°pgc. The variation for the locality is 24°W. The deviation is 4°E. The gyro error is 2°W. What is the true course made good?  261°T  279°T  301°T  283°T  Compass Error, Leeway 
D  The true course between two points is 119°. Your gyrocompass has an error of 3°E. You allow of 4° leeway for a southsouthwest wind. What gyro course should be steered to make the true course good?  118°pgc  126°pgc  112°pgc  120°pgc  Compass Error, Leeway 
B  The true course between two points is 041°. Your gyrocompass has an error of 1°W. You make an allowance of 2° leeway for a eastsoutheast wind. What gyro course should be steered to make the true course good?  040°pgc  044°pgc  042°pgc  043°pgc  Compass Error, Leeway 
C  The true course between two points is 220°. Your gyrocompass has an error of 1°E. You make an allowance of 1° leeway for a northnorthwest wind. What gyro course should be steered to make the true course good?  223°pgc  221°pgc  220°pgc  222°pgc  Compass Error, Leeway 
A  The true course between two points is 312°. Your gyrocompass has an error of 3°W. You make an allowance of 4° leeway for a west by south wind. What gyro course should be steered to make the true course good?  311°pgc  315°pgc  305°pgc  318°pgc  Compass Error, Leeway 
D  The true course between two points is 078°. Your gyrocompass has an error of 2°E. You make an allowance of 3° leeway for a north wind. What gyro course should be steered to make the true course good?  079°pgc  075°pgc  077°pgc  073°pgc  Compass Error, Leeway 
A  The true course between two points is 194°. Your gyrocompass has an error of 2°W and you make an allowance of 1° leeway for a southwest wind. What gyro course should you steer to make the true course good?  197°pgc  199°pgc  195°pgc  193°pgc  Compass Error, Leeway 
A  You are steering 154°pgc. The wind is southwest causing 4° leeway. The gyro error is 3°E, variation is 11°W and deviation is 7°E. What is the true course made good?  153°T  161°T  158°T  164°T  Compass Error, Leeway 
D  The true course between two points is 337°. Your gyrocompass has an error of 3°E and you make an allowance of 5° leeway for a west wind. Which gyro course should be steered to make the true course good?  335°pgc  345°pgc  339°pgc  329°pgc  Compass Error, Leeway 
A  The true course between two points is 023°T. Your gyrocompass has an error of 1°W and you make an allowance of 4° leeway for an east wind. What gyro course should be steered to make the true course good?  028°pgc  020°pgc  026°pgc  021°pgc  Compass Error, Leeway 
A  The true course between two points is 106°. Your gyrocompass has an error of 2°E and you make an allowance of 2° leeway for a south wind. What gyro course should be steered to make the true course good?  106°pgc  102°pgc  108°pgc  104°pgc  Compass Error, Leeway 
B  While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a southerly wind produces 1° leeway?  148°T  084°T  085°T  086°T  Compass Error, Leeway 
A  You desire to make good 152°T. The magnetic compass deviation is 4°E, the variation is 5°E, and the gyro error is 3°E. A southwesterly wind produces a 4° leeway. Which course would you steer per standard compass to make good the true course?  147°psc  141°psc  143°psc  137°psc  Compass Error, Leeway 
C  You are steering 125°pgc. The wind is southwest by south causing a 3° leeway. The variation is 6°E, the deviation is 2°W, and the gyro error is 1°W. What is the true course made good?  127°T  129°T  121°T  123°T  Compass Error, Leeway 
B  Enroute from Rio to Montevideo, the true course is 215°; the gyro error is 2° west. A north wind causes 3° leeway. What course would you steer per gyrocompass to make good the true course?  214°pgc  220°pgc  216°pgc  210°pgc  Compass Error, Leeway 
D  While enroute from Sydney to the Panama Canal a vessel's true course is 071°. Variation is 14°E. Deviation is 4°W. A northerly breeze causes 2° leeway. What course would you steer psc in order to make good the true course?  079°psc  063°psc  061°psc  059°psc  Compass Error, Leeway 
A  You are underway and intend to make good a course of 040°T. You experience a current with a set and drift of 190°T at 1.4 knots, and a northwest wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 10 knots. What will be your speed made good over your intended course of 040°T?  8.8 knots  7.8 knots  9.8 knots  11.0 knots  Course Made Good 
C  You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What course should you steer?  054°T  027°T  044°T  037°T  Course Made Good 
D  You wish to make good a course of 230°T while turning for an engine speed of 12.5 knots. The set is 180°T, and the drift is 1.7 knots. What course should you steer?  222°T  231°T  244°T  236°T  Course Made Good 
B  You wish to make good a course of 300°T while turning for an engine speed of 11 knots. The set is 350°T, and the drift is 2.1 knots. Which course should you steer?  308°T  292°T  278°T  288°T  Course Made Good 
A  You are underway on course 000°T at 9.5 knots. The current is 082°T at 1.1 knots. What is the course being made good?  007°T  021°T  353°T  009°T  Course Made Good 
A  You are underway on course 315°T at 14 knots. The current is 135°T at 1.9 knots. What is the course being made good?  315°T  322°T  317°T  130°T  Course Made Good 
C  You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the course made good?  232°T  209°T  222°T  217°T  Course Made Good 
C  You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the course made good?  156°T  160°T  164°T  169°T  Course Made Good 
A  You wish to make good a course of 350°T while turning for an engine speed of 10 knots. The set is 070°T, and the drift is 1.5 knots. What course should you steer?  341°T  359°T  332°T  345°T  Course Made Good 
A  You are underway and intend to make good a course of 350°T. You experience a current with a set and drift of 070°T at 1.5 knots, and a westerly wind produces a leeway of 4°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 10 knots. What will be your speed made good over your intended course of 350°T?  10. 2knots  9.8 knots  10.6 knots  9.4 knots  Course Made Good 
D  You wish to make good a course of 035°T while turning for an engine speed of 12 knots. The set is 340°T, and the drift is 2 knots. What speed will you make good along the track line?  12.2 knots  12.7 knots  13.3 knots  13.0 knots  Course Made Good 
D  You are underway and intend to make good a course of 170°T. You experience a current with a set and drift of 050°T at 2.8 knots, and a easterly wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 18.5 knots. What will be your speed made good over your intended course of 170°T?  18.5 knots  17.6 knots  18.1 knots  17.2 knots  Course Made Good 
D  You are underway and intend to make good a course of 088°T. You experience a current with a set and drift of 300°T at 2.4 knots, and a southerly wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 16 knots. What will be your speed made good over your intended course of 088°T?  14.9 knots  14.4 knots  13.4 knots  13.9 knots  Course Made Good 
A  You are underway on course 172°T at 18.5 knots. The current is 078°T at 2.8 knots. What is the speed being made good?  18.5 knots  20.0 knots  19.5 knots  19.0 knots  Course Made Good 
A  You are underway on course 000°T at 9.5 knots. The current is 082°T at 1.1 knots. What is the speed being made good?  9.8 knots  9.2 knots  10.1 knots  9.5 knots  Course Made Good 
D  You are underway on course 315°T at 14 knots. The current is 135°T at 1.9 knots. What is the speed being made good?  15.9 knots  13.5 knots  14.0 knots  12.1 knots  Course Made Good 
A  You are underway on course 215°T at 12 knots. The current is 000°T at 2.3 knots. What is the speed being made good?  10.2 knots  8.5 knots  10.9 knots  11.2 knots  Course Made Good 
A  You are underway on course 160°T at 10 knots. The current is 210°T at 0.9 knots. What is the speed being made good?  10.7 knots  12.3 knots  11.6 knots  11.0 knots  Course Made Good 
B  You wish to make good a course of 053°T while turning for an engine speed of 16 knots. The set is 345°T, and the drift is 2.4 knots. What speed will you make good along the track line?  14.1 knots  16.8 knots  16.1 knots  15.2 knots  Course Made Good 
A  You are heading
328°pgc to make good a course of 332°T, allowing 3° leeway for westerly
winds and 1°E gyro error. The variation is 17°E. What should your heading
be by standard magnetic compass to make good 332°T. {{{ DEVIATION TABLE Magnetic Heading Deviation 345° 1°E 330° 1°W 315° 3°W}}} 
315°psc 
343°psc 
318°psc 
345°psc  Course to Steer 
D  You are steering
142°pgc to make good your desired course. The gyro error is 1°E . The variation
is 8°W. What should you steer by standard magnetic compass to make good
the desired course? {{{ DEVIATION TABLE Magnetic Heading Deviation 120° 4°E 135° 2°E 150° 0}}} 
133°psc 
146°psc 
148°psc 
151°psc  Course to Steer 
C  You are underway on course 017°T at a speed of 14.2 knots. You sight a buoy bearing 025°T at a radar range of 3.7 miles at 1947. If you change course at 1953, what is the course to steer to leave the buoy abeam to starboard at 0.1 mile?  021°T  030°T  027°T  024°T  Course to Steer 
D  The track line on the chart is 274°T. Variation is 4°E, and deviation is 2°E. The gyro error is 1.5°E. What course would be steered by gyrocompass to make good the desired course?  280.5°pgc  278.0°pgc  275.5°pgc  272.5°pgc  Course to Steer 
C  You are underway on course 059°T at a speed of 13.8 knots. You sight a light bearing 064°T at a radar range of 5.1 miles at 1839. If you change course at 1845, what is the course to steer to leave the light abeam to starboard at 1.0 mile?  053°T  047°T  050°T  058°T  Course to Steer 
D  You are underway on course 106°T at a speed of 15.3 knots. You sight a buoy bearing 109°T at a radar range of 3.6 miles at 1725. If you change course at 1728, what is the course to steer to leave the buoy abeam to port at 0.5 mile?  100°T  117°T  125°T  120°T  Course to Steer 
D  You are underway on course 128°T at a speed of 17.6 knots. You sight a daymark bearing 126°T at a radar range of 4.3 miles at 1649. If you change course at 1654, what is the course to steer to leave the daymark abeam to starboard at 0.5 mile?  116°T  136°T  119°T  113°T  Course to Steer 
A  You are underway on course 137°T at a speed of 16.2 knots. You sight a rock bearing 134°T at a radar range of 4.6 miles at 1508. If you change course at 1514, what is the course to steer to leave the rock abeam to port at 1.5 miles?  162°T  158°T  151°T  154°T  Course to Steer 
D  You are underway on course 163°T at a speed of 15.8 knots. You sight a buoy bearing 161°T at a radar range of 5.5 miles at 1319. If you change course at 1325, what is the course to steer to leave the buoy abeam to starboard at 1.0 mile?  175°T  148°T  151°T  145°T  Course to Steer 
C  You are underway on course 204°T at a speed of 17.3 knots. You sight a light bearing 205°T at a radar range of 4.7 miles at 1222. If you change course at 1228, what is the course to steer to leave the light abeam to port at 1.5 miles?  223°T  240°T  236°T  229°T  Course to Steer 
C  At 1423 you are on course 072 T° at 12.2 knots, when you sight a rock awash bearing 070°T at a range of 3.6 miles. If you change course at 1427, what course would you steer to leave the rock 1.0 mile abeam to port?  049°  086°  091°  054°  Course to Steer 
A  You are steaming on course 126°T at 14.8 knots. At 1022 you sight a buoy bearing 128°T, at a range of 4.8 miles. If you change course at 1026, what true course will you steer to leave the buoy 0.5 mile abeam to port?  136°  122°  119°  133°  Course to Steer 
D  At 2221 your course is 222°pgc at a speed of 11.2 knots, when radar detects a buoy bearing 355° relative, at a range of 5.8 miles. The gyro error is 2°E. If you change course at 2226, what course should you steer to leave the buoy 1.0 mile abeam to port?  231°pgc  206°pgc  210°pgc  228°pgc  Course to Steer 
C  You are underway on course 241°T at a speed of 18.2 knots. You sight a daymark bearing 241°T at a radar range of 3.9 miles at 1006. If you change course at 1009, what is the course to steer to leave the daymark abeam to starboard at 1.0 mile?  257°T  218°T  222°T  260°T  Course to Steer 
D  You are underway on course 254°T at a speed of 16.5 knots. You sight a rock bearing 255°T at a radar range of 6.1 miles at 0916. If you change course at 0922, what is the course to steer to leave the rock abeam to starboard at 1.5 miles?  233°T  239°T  268°T  236°T  Course to Steer 
B  You are underway on course 340°T at a speed of 14.8 knots. You sight a buoy bearing 342°T at a radar range of 4.8 miles at 1422. If you change course at 1428, what is the true course to steer to leave the buoy abeam to port at 1.0 mile?  357°T  001°T  354°T  327°T  Course to Steer 
C  You are steering
318°psc. A northeasterly wind causes 3° of leeway. The variation is 14°E
and the deviation table is extracted below. What will be the true course
made good? {{{ DEVIATION TABLE Magnetic Heading Deviation 300° 2°E 315° 0 330° 2°W}}} 
327°T 
301°T 
329°T 
303°T  Compass Error, Leeway 
A  You wish to make
good a course of 258°T, allowing 4° leeway for northerly winds. The variation
is 21°W. What should you steer per standard magnetic compass to make good
258°T? {{{ (5.8.3.122) Magnetic Heading Deviation 285° 5°E 270° 3°E 255° 1°E 240° 1°W}}} 
278°psc  288°psc  242°psc  271°psc  Compass Error, Leeway 
D  You are steering
142°pgc to make good your desired course. The gyro error is 1°E . The variation
is 8°W. What should you steer by standard magnetic compass to make good
the desired course? {{{ (5.8.3.201) Magnetic Heading Deviation 120° 4°E 135° 2°E 150° 0}}} 
133°psc  146°psc  148°psc  151°psc  Compass Error, Leeway 
B  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a gyro heading
of 039°. {{{ HEADING PSC PGC 030.5° 024° 061.5° 054° 092.0° 084° 122.5° 114° 152.0° 144° 181.0° 174° 210.0° 204° 239.5° 234° 269.0° 264° 298.0° 294° 327.5° 324° 358.5° 354°}}} 
0.5°W  1.0°W  0.8°E  0.0°  Deviation of Standard Magnetic Compass 
C  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic
compass heading of 057°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.5°E  0.5°W  1.5°W  1.0°E  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic
compass heading of 143°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
2.0°W  0.5°W  0.0°  1.5°W  Deviation of Standard Magnetic Compass 
C  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic
compass heading of 104°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.8°E  2.6°E  2.2°W  2.7°W  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a magnetic
compass heading of 234°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
0.5°E  2.5°E  2.5°W  1.0°W  Deviation of Standard Magnetic Compass 
C  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic
compass heading of 210°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
0.5°E  0.5°W  0.0°  1.0°E  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a true heading
of 157°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
1.5°W  0.0°  1.0°W  2.0°W  Deviation of Standard Magnetic Compass 
D  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a true heading
of 319°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
0.5°E  1.0°W  2.5°W  2.5°E  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic
compass heading of 004°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 239.5°234° 269.0°264° 210.0°204° 298.0°294° 327.5°324° 358.5°354°}}} 
1.0°E  0.0°  1.5°W  0.5°W  Deviation of Standard Magnetic Compass 
D  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading
of 196°. {{{ HEADING PSC PGC 030.5°020° 092.0°080° 106.5°050° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.0°W  2.0°W  2.0°E  0.0°  Deviation of Standard Magnetic Compass 
B  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a true heading
of 258°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
0.5°E  1.0°E  0.5°W  0.0°  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a gyro heading
of 058°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
1.5°W  1.0°E  1.0°W  0.5°W  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic
compass heading of 166°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 239.5°234° 269.0°264° 210.0°204° 298.0°294° 327.5°324° 358.5°354°}}} 
1.5°W  0.5°W  2.0°W  1.0°W  Deviation of Standard Magnetic Compass 
B  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a magnetic
compass heading of 022°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
1.5°E  0.0°  0.5°W  0.5°E  Deviation of Standard Magnetic Compass 
B  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°W. The variation is 8°W. Find the deviation on a true heading
of 236°. {{{ HEADING PSC PGC 030.5°024° 061.5°054° 092.0°084° 122.5°114° 152.0°144° 181.0°174° 210.0°204° 239.5°234° 269.0°264° 298.0°294° 327.5°324° 358.5°354°}}} 
1.5°E  0.5°E  0.0°  1.0°W  Deviation of Standard Magnetic Compass 
A  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading
of 166°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.0°W  0.5°W  1.0°E  0.5°E  Deviation of Standard Magnetic Compass 
C  You swung ship
and compared the magnetic compass against the gyro compass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a gyro heading
of 037°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.5°E  2.0°E  1.0°W  1.5°W  Deviation of Standard Magnetic Compass 
C  You swung ship
and compared the magnetic compass against the gyrocompass to find deviation.
Gyro error is 2°E. The variation is 8°W. Find the deviation on a true heading
of 187°. {{{ HEADING PSC PGC 030.5°020° 061.5°050° 092.0°080° 122.5°110° 152.0°140° 181.0°170° 210.0°200° 239.5°230° 269.0°260° 298.0°290° 327.5°320° 358.5°350°}}} 
1.5°W  1.0°E  0.5°W  0.0°  Deviation of Standard Magnetic Compass 
C  While proceeding up a channel on course 010° per gyro compass, you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check of the chart shows the range to be 009°T and the variation to be 15°W. If the ship's course is 026°psc, what is the deviation for the present heading?  1°W  1°E  2°W  2°E  Deviation, Gyro Error 
D  While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001° per gyro compass and the charted value of the range of lights is 359°T, what is the gyro compass error?  2°E  1°W  1°E  2°W  Deviation, Gyro Error 
D  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 283° T, and the variation is 13°E. If the heading of your vessel at the time of the sighting is 278° per standard compass, what is the deviation?  5°E  5°W  8°E  8°W  Deviation, Gyro Error 
C  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 196°T, and the variation is 7°E. If the heading of your vessel at the time of the sighting is 192° per standard magnetic compass, what is the deviation?  4°E  3°E  3°W  4°W  Deviation, Gyro Error 
A  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 178°T, and the variation is 9°W. If the heading of your vessel at the time of the sighting is 180° per standard magnetic compass, what is the deviation?  7°E  2°E  2°W  7°W  Deviation, Gyro Error 
B  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 064°T, and the variation is 17°W. If the heading of your vessel at the time of the sighting is 094° per standard magnetic compass, what is the correct deviation?  4°W  13°W  4°E  13°E  Deviation, Gyro Error 
A  Your vessel is proceeding up a channel steering on a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 249°T, and the variation is 14°E. If the heading of your vessel at the time of the sighting is 226° per standard magnetic compass, what is the correct deviation?  9°E  5°W  5°E  9°W  Deviation, Gyro Error 
B  Your vessel is proceeding down a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 229°T, and variation is 6°W. If the heading of your vessel at the time of the sighting is 232° per standard magnetic compass, what is the deviation?  9°E  3°E  3°W  9°W  Deviation, Gyro Error 
B  You are on course 251°pgc and 241° per magnetic compass, when you observe a range in line bearing 192°pgc. The chart indicates that the range is in line on a bearing of 194°T. The variation is 16°E. What is the deviation of the magnetic compass?  2°W  4°W  10°W  2°E  Deviation, Gyro Error 
C  While entering a harbor on a course of 225° per gyrocompass, you take a bearing on a pair of range lights and get 220° per gyrocompass. The bearing on the chart is 217°T. The variation for the area is 6°W, and deviation is 2°W. What course would you steer per gyrocompass to make good a true course of 232°?  231°pgc  229°pgc  235°pgc  233°pgc  Deviation, Gyro Error 
B  Entering a harbor, you take a bearing on a range and get 338° per gyrocompass (pgc). The true bearing from the chart is 340°T. Variation for the area is 14°E. Your course is 329° per standard magnetic compass (psc) and 338°pgc. The deviation on this heading is __________.  5°E  3°W  5°W  3°E  Deviation, Gyro Error 
B  You wish to check the deviation of your standard magnetic compass. You find a natural range that you steer for and note that the gyrocompass heading is 034°, and the heading by standard magnetic compass is 026°. The gyro error is 1°W. Variation is 9°E. What is the deviation for that heading?  9°E  2°W  0°  2°E  Deviation, Gyro Error 
C  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 343°T, and the variation is 5° west. If the heading of your vessel at the time of the sighting is 344° per standard magnetic compass, what is the correct deviation?  4°W  1°W  4°E  1°E  Deviation, Gyro Error 
A  Two beacons form a range in the direction of 221.5°T. The range is seen in line from your vessel bearing 223° per gyro compass. The variation in the area is 4°E. What is the error of your gyro compass?  1.5°W  5.5°W  2.5°W  2.5°E  Deviation, Gyro Error 
D  Your ship is entering port from sea, and you sight a pair of range lights. When in line, they bear 315° per standard magnetic compass. The chart shows that the range bearing is 312°T, and that variation is 6°W. What is the deviation of your compass at the time of the sighting?  9°E  3°W  9°W  3°E  Deviation, Gyro Error 
B  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 014°T, and the variation is 11°E. If the heading of your vessel at the time of the sighting is 009° per standard magnetic compass, what is the correct deviation?  5°W  6°W  6°E  5°E  Deviation, Gyro Error 
D  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 186°T, and the variation is 11°W. If the heading of your vessel at the time of the sighting is 193° per standard magnetic compass, what is the correct deviation?  7°W  7°E  4°W  4°E  Deviation, Gyro Error 
B  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line dead ahead. The chart indicates that the direction of this pair of lights is 093°T, and the variation is 6°E. If the heading of your vessel at the time of the sighting is 097° per standard magnetic compass, what is the correct deviation?  5°W  10°W  5°E  10°E  Deviation, Gyro Error 
A  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 311°T, and the variation is 8°E. If the heading of your vessel at the time of the sighting is 305° per standard magnetic compass, what is the correct deviation?  2°W  2°E  6°W  6°E  Deviation, Gyro Error 
B  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 212°T, and the variation is 7°W. If the heading of your vessel at the time of the sighting is 208° per standard magnetic compass, what is the correct deviation?  4°E  11°E  11°W  4°W  Deviation, Gyro Error 
B  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 147°T, and the variation is 5°E. If the heading of your vessel at the time of the sighting is 148° per standard magnetic compass, what is the correct deviation?  6°E  6°W  1°W  1°E  Deviation, Gyro Error 
C  Your vessel is proceeding up a channel, and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 352°T, and the variation is 4°W. If the heading of your vessel at the time of the sighting is 359° per standard magnetic compass, what is the correct deviation?  7°E  11°W  3°W  11°E  Deviation, Gyro Error 