
Preview Tides and Currents Questions
B  A coastal current __________.  is generated by waves striking the beach  flows outside the surf zone  is also known as a longshore current  flows in a circular pattern  Definitions 
A  On an Atlantic Ocean voyage from New York to Durban, South Africa, you should expect the Agulhas Current to present a strong __________.  head current  onshore set  fair or following current  offshore set  Definitions 
D  As the South Equatorial Current approaches the east coast of Africa, it divides with the main part flowing south to form the warm __________.  Benguela Current  Madagascar Current  Canary Current  Agulhas Current  Definitions 
B  In which month will the equatorial counter current be strongest?  January  August  April  October  Definitions 
A  On a voyage from Cape Town to London, the favorable ocean current off the coast of Africa is the __________.  Benguela Current  Canary Current  South Atlantic Current  Agulhas Current  Definitions 
C  The Benguela Current flows in a __________.  SW'ly direction along the SE coast of Greenland  S'ly direction off the East Coast of Australia  NW'ly direction along the SW coast of Africa  SW'ly direction along the NW coast of Africa  Definitions 
C  Which current would you encounter on a direct passage from London, England, to Cape Town, South Africa?  Falkland Current  Brazil Current  Benguela Current  Norway Current  Definitions 
C  The set of the equatorial countercurrent is generally to the __________.  north  southwest  east  northwest  Definitions 
D  The Brazil Current flows in which general direction?  Northwesterly  Southeasterly  Northerly  Southwesterly  Definitions 
D  What current flows southward along the west coast of the United States and causes extensive fog in that area?  Alaska Current  North Pacific Current  Davidson Current  California Current  Definitions 
B  On a voyage from Halifax, N.S., to Dakar, West Africa, the Canary Current will __________.  offer resistance in the form of a head current  set the vessel to the right  set the vessel to the left  furnish additional thrust in the form of a fair or following current  Definitions 
B  The speed of an ocean current is dependent on __________.  underwater soil conditions  the density of the water  the presence of a high pressure area near it  the air temperature  Definitions 
B  The two most effective generating forces of surface ocean currents are __________.  water depth and underwater topography  wind and density differences in the water  temperature and salinity differences in the water  rotation of the Earth and continental interference  Definitions 
B  Which statement(s) concerning the effect of Coriolis force on ocean currents is(are) correct?  The deflection of the current is to the left in the Northern Hemisphere.  The Coriolis force is more effective in deep water.  The Coriolis force is greater in the lower latitudes.  All of the above.  Definitions 
A  The drift and set of tidal, river, and ocean currents refer to the __________.  speed and direction toward which the current flows  type and characteristic of the current's flow  position and area of the current  None of the above  Definitions 
B  A tide is called diurnal when __________.  the high tide and low tide are exactly six hours apart  only one high and one low water occur during a lunar day  two high tides occur during a lunar day  the high tide is higher and the low tide is lower than usual  Definitions 
D  The movement of water away from the shore or downstream is called a(n) __________.  reversing current  slack current  flood current  ebb current  Definitions 
D  What describes an ebb current?  Horizontal movement of the water away from the land following low tide  Horizontal movement of the water toward the land following low tide  Horizontal movement of the water toward the land following high tide  Horizontal movement of the water away from the land following high tide  Definitions 
A  What is an ebb current?  A current going out  A current coming in  A current at minimum flow  A current at maximum flow  Definitions 
C  What describes a flood current?  Horizontal movement of the water away from the land following high tide  Horizontal movement of the water toward the land after high tide  Horizontal movement of the water toward the land after low tide  Horizontal movement of the water away from the land following low tide  Definitions 
B  The term "flood current" refers to that time when the water __________.  level is not changing  is flowing towards the land  is moving towards the ocean  level is rising because of heavy rains  Definitions 
D  In order to get the maximum benefit from the Gulf Stream, on a voyage between Houston and Philadelphia, you should navigate __________.  about 10 miles east of Cape Canaveral, FL  along the 50fathom curve while off the east coast of Florida  close inshore between Jupiter Inlet and Fowey Rocks, FL  about 75 miles east of Ormond Beach, FL  Definitions 
A  A swift current occurring in a narrow passage connecting two large bodies of water, which is produced by the continuously changing difference in height of tide at the two ends of the passage, is called a __________.  hydraulic current  rectilinear current  harmonic current  rotary current  Definitions 
D  The current that, in many respects, is similar to the Gulf Stream is the __________.  Oyashio  Benguela Current  California Current  Kuroshio  Definitions 
A  Which ocean current is "warm" based on the latitude in which it originates and on the effect it has on climate?  Kuroshio Current  Benguela Current  Peru Current  California Current  Definitions 
C  The cold ocean current which meets the warm Gulf Stream between latitudes 40° and 43°N to form the "cold wall" is called the __________.  Greenland Current  North Atlantic Current  Labrador Current  North Cape Current  Definitions 
B  Which current is responsible for the movement of icebergs into the North Atlantic shipping lanes?  Iceland Current  Labrador Current  Baffin Current  Baltic Current  Definitions 
A  Cold water flowing southward through the western part of the Bering Strait between Alaska and Siberia is joined by water circulating counterclockwise in the Bering Sea to form the __________.  Oyashio Current  Kuroshio Current  Subarctic Current  Alaska Current  Definitions 
D  The Humboldt Current flows in which direction?  South  East  West  North  Definitions 
B  The range of tide is the __________.  maximum depth of the water at high tide  difference between the heights of high and low tide  distance the tide moves out from the shore  duration of time between high and low tide  Definitions 
B  The range of tide is the __________.  duration of time between the high and low tide  difference between the heights of high and low tide  maximum depth of the water at high tide  distance the tide moves out from the shore  Definitions 
C  The range of tide is the __________.  duration of time between high and low tide  maximum depth of the water at high tide  difference between the heights of high and low tide  distance the tide moves out from the shore  Definitions 
A  The range of tide is the __________.  difference between the heights of high and low tide  distance the tide moves out from the shore  duration of time between high and low tide  maximum depth of the water at high tide  Definitions 
C  A rotary current sets through all directions of the compass. The time it takes to complete one of these cycles, in a locale off the East coast of the US, is approximately __________.  3 1/2 hours  2 1/2 hours  12 1/2 hours  6 1/4 hours  Definitions 
C  Which term refers to the direction a current is flowing?  Drift  Stand  Set  Vector direction  Definitions 
A  Set of the current is __________.  direction towards which it flows  its velocity in knots  estimated current  direction from which it flows  Definitions 
A  The set of the current is the __________.  direction in which the current flows  speed of the current at a particular time  maximum speed of the current  direction from which the current flows  Definitions 
A  With respect to a reversing current, slack water occurs when there is __________.  little or no horizontal motion of the water  a weak ebb or flood current  when winds cause water to back up in a river mouth  little or no vertical motion of the water  Definitions 
A  In a river subject to tidal currents, the best time to dock a ship without the assistance of tugs is __________.  at slack water  when there is a following current  at high water  at flood tide  Definitions 
B  Which current would you encounter on a direct passage from southern Africa to Argentina, South America?  South Equatorial  South Atlantic  Guinea  Agulhas  Definitions 
A  "Stand" of the tide is that time when __________.  the vertical rise or fall of the tide has stopped  slack water occurs  tidal current is at a maximum  the actual depth of the water equals the charted depth  Definitions 
A  In the Sargasso Sea there are large quantities of seaweed and no well defined currents. This area is located in the __________.  Central North Atlantic Ocean  Caribbean Sea  Western North Pacific Ocean  area off the west coast of South America  Definitions 
A  The north equatorial current flows to the __________.  west  northeast  east  southwest  Definitions 
C  Which statement is TRUE concerning the current of the Gulf Stream?  It is slower at the time of neap tides than at spring tides.  It reaches its daily maximum speed a few hours before the transit of the Moon.  Variations in the trade winds affect the current.  When the Moon is at its maximum declination the stream is narrower than when the Moon is on the equator.  Definitions 
D  The steady current circling the globe at about 60°S is the __________.  Humboldt Current  Prevailing Westerly  SubPolar Flow  West Wind Drift  Definitions 
D  The West Wind Drift is located __________.  in the South Pacific near 5°S  on each side of the Equatorial Current  in the North Atlantic between Greenland and Europe  near 60°S  Definitions 
C  How long would a steady wind need to blow in order to create a wind driven current?  2 hours  6 hours  12 hours  18 hours  Definitions 
B  You are on a voyage from New Orleans to Boston and navigating off the Florida coast. You will get the greatest benefit from the Gulf Stream if you navigate __________.  about 15 miles east of Daytona  about 20 miles east of Jupiter Inlet  along the 50fathom curve  about 5 miles east of Cape Canaveral  Definitions 
D  Ocean currents are well defined and __________.  are characterized by a light green color  change direction 360° during a 24 hour period  create large waves in the direction of the current  remain fairly constant in direction and velocity throughout the year  Definitions 
A  The approximate mean position of the axis of the Gulf Stream east of Palm Beach, FL, is __________.  15 nautical miles  25 nautical miles  5 nautical miles  35 nautical miles  Definitions 
C  Generally speaking, a ship steaming across the North Pacific from Japan to Seattle is likely to experience __________.  adverse currents for practically the entire crossing  favorable currents in the summer months and adverse currents in the winter months  favorable currents for practically the entire crossing  variable currents having no significant effect on the total steaming time  Definitions 
A  In the Northern Hemisphere the major ocean currents tend to flow __________.  clockwise around the North Atlantic and North Pacific Oceans  counterclockwise except in the Gulf Stream  clockwise or counterclockwise depending on whether it is warm or cold current  counterclockwise around the North Atlantic and North Pacific Oceans  Definitions 
B  You are on a voyage from New Orleans to Boston. When navigating off the Florida coast, you will get the greatest benefit from the Gulf Stream if you navigate __________.  about 25 miles east of Daytona Beach  about 45 miles east of Cape Canaveral  close inshore between Fowey Rocks and Jupiter Inlet  along the 50fathom curve  Definitions 
C  When a current flows in the opposite direction to the waves, the wave __________.  velocity increases  length is unchanged  height is increased  length is increased  Definitions 
B  You are enroute to Jacksonville, FL, from San Juan, P.R. There is a fresh N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.  smoother seas and warmer water  steeper waves, closer together  long swells  cirrus clouds  Definitions 
C  You are enroute to Savannah, GA, from Recife, Brazil. There is a strong N'ly wind blowing. As you cross the axis of the Gulf Stream you would expect to encounter __________.  long swells  smoother seas and warmer water  steeper waves, closer together  cirrus clouds  Definitions 
D  You are bound for Baltimore via Cape Henry on a 15 knot ship. If the flood at Chesapeake Bay entrance begins at 1800 EST (ZD +5), at what time would you depart from the Chesapeake Bay entrance to have the most favorable current?  1700 hours  1800 hours  1900 hours  2030 hours  Definitions 
D  Where will you find information about the duration of slack water?  Sailing Directions  American Practical Navigator  Tide Tables  Tidal Current Tables  Definitions 
C  Where will you find information about the duration of slack water?  Sailing Directions  American Practical Navigator  Tidal Current Tables  Tide Tables  Definitions 
B  You will find information about the duration of slack water in the __________.  Tide Tables  Tidal Current Tables  Sailing Directions  American Practical Navigator  Definitions 
B  Information about the direction and velocity of rotary tidal currents is found in the __________.  Mariner's Guide  Tidal Current Tables  Tide Tables  Nautical Almanac  Definitions 
B  Information about the direction and velocity of rotary tidal currents is found in the __________.  Nautical Almanac  Tidal Current Tables  Mariner's Guide  Tide Tables  Definitions 
D  Information about the direction and velocity of rotary tidal currents is found in the __________.  Tide Tables  Mariner's Guide  Nautical Almanac  Tidal Current Tables  Definitions 
A  Information about currents around Pacific Coast ports of the U.S. is found in the __________.  Tidal Current Tables  Tide Tables  Nautical Almanac  Ocean Current Tables  Definitions 
B  Information about direction and velocity of rotary tidal currents is found in the __________.  Nautical Almanac  Tidal Current Tables  Mariner's Guide  Tide Tables  Definitions 
A  Information about currents on the Pacific Coast of the U. S. are found in the __________.  Tidal Current Tables  Ocean Current Tables  Nautical Almanac  Tide Tables  Definitions 
B  Information about currents on the Pacific Coast of the U. S. are found in the __________.  Ocean Current Tables  Tidal Current Tables  Tide Tables  Nautical Almanac  Definitions 
D  Where can information about the currents for the Pacific Coast of the U. S. be obtained?  Tide Tables  Nautical Almanac  Ocean Current Tables  Tidal Current Tables  Definitions 
A  Where would you find information concerning the duration of slack water?  Tidal Current Tables  Sailing Directions  Tide Tables  American Practical Navigator  Definitions 
D  Data relating to the direction and velocity of rotary tidal currents can be found in the __________.  Tide Tables  Mariner's Guide  Nautical Almanac  Tidal Current Tables  Definitions 
D  The velocity of the current in large coastal harbors is __________.  unpredictable  generally constant  generally too weak to be of concern  predicted in Tidal Current Tables  Definitions 
D  How many slack tidal currents usually occur each day on the east coast of the United States?  One  Two  Three  Four  Definitions 
D  To make sure of getting the full advantage of a favorable current, you should reach an entrance or strait at which time in relation to the predicted time of the favorable current?  At the predicted time  30 minutes before flood, one hour after an ebb  One hour after  30 minutes before  Definitions 
C  When the declination of the Moon is 0°12.5'S, you can expect some tidal currents in Gulf Coast ports to __________.  become reversing currents  exceed the predicted velocities  become weak and variable  have either a double ebb or a double flood  Definitions 
C  The velocity of a rotary tidal current will be decreased when the Moon is __________.  full  new  at apogee  All of the above.  Definitions 
D  The velocity of a rotary tidal current will increase when the Moon is __________.  at perigee  full  new  All of the above.  Definitions 
B  Where would you find information about the time of high tide at a specific location on a particular day of the year?  Tidal Current Tables  Tide Tables  Coast Pilot  Nautical Almanac  Definitions 
C  To predict the actual depth of water using the Tide Tables, the number obtained from the Tide Tables is __________.  divided by the charted depth  multiplied by the charted depth  added to or subtracted from the charted depth  the actual depth  Definitions 
B  When daylight savings time is kept, the time of tide and current calculations must be adjusted. One way of doing this is to __________.  apply no correction as the times at the reference stations are adjusted for daylight savings time  add one hour to the times listed for the reference stations  subtract one hour from the times listed for the subordinate stations  add 15° to the standard meridian when calculating the time differences  Definitions 
A  When daylight savings time is kept, the time of tide and current calculations must be adjusted. One way of doing this is to __________.  add one hour to the times listed under the reference stations  apply no correction as the times in the reference stations are adjusted for daylight savings time  add 15° to the standard meridian when calculating the time difference  subtract one hour from the time differences listed for the subordinate stations  Definitions 
A  When daylight savings time is kept, the time of tide and current calculations must be adjusted. One way of doing this is to __________.  add one hour to the times listed under the reference stations  apply no correction, as the times in the reference stations are adjusted for daylight savings time  subtract one hour from the times listed under the reference stations  add 15° to the standard meridian when calculating the time difference  Definitions 
A  The time meridian used when computing the height of tide or the velocity of the current for Pensacola Bay, FL, is __________.  90°00'W  97°30'W  75°00'W 
82°30'W  Definitions 
A  The time meridian used for tide computations in New York Harbor is __________.  75°00'W  52°30'W  82°30'W  60°00'W  Definitions 
C  The time meridian that is used when computing the currents for Pensacola Bay, Florida, is __________.  60°W  75°W  90°W  105°W  Definitions 
C  The tides in Boston Harbor generally __________.  have their variations caused by the changing declination of the Moon  are diurnal in nature  have a greater range than the tides in Gulf Coast ports  All of the above.  Definitions 
B  The datum from which the predicted heights of tides are reckoned in the tide tables is the same as that used for the charts of the locality. The depression of the datum below mean sea level for Hampton Roads, Virginia is __________.  between .7 and +.5 feet  1.2 feet  4.1 feet  between 1.9 and 3.2 feet  Definitions 
B  How many high waters usually occur each day on the East Coast of the United States?  One  Two  Three  Four  Definitions 
C  The lunar or tidal day is __________.  about 10 minutes longer than the solar day  the same length as the solar day  about 50 minutes longer than the solar day  about 50 minutes shorter than the solar day  Definitions 
A  Current refers to the __________.  horizontal movement of the water  vertical movement of the water  density changes in the water  None of the above  Definitions 
A  In some river mouths and estuaries the incoming hightide wave crest overtakes the preceding lowtide trough. This results in a wall of water proceeding upstream, and is called a __________.  bore  seiche  surge  boundary wave  Definitions 
B  Your vessel goes aground in soft mud. You would have the best chance of refloating it on the next tide if it grounded at __________.  low water neap  low water spring  high water neap  high water spring  Definitions 
C  Spring tides occur __________.  when the moon and sun have declination of the same name  at the beginning of spring when the sun is over the equator  when the moon is new or full  only when the moon and sun are on the same sides of the earth  Definitions 
D  When the moon is new or full, which type of tides occur?  Neap  Diurnal  Apogean  Spring  Definitions 
C  Spring tides occur when the __________.  Moon's declination is maximum and opposite to that of the Sun  Sun and Moon are in quadrature  Moon is new or full  Moon is in its first quarter or third quarter phase  Definitions 
A  Spring tides occur __________.  when the Sun, Moon, and Earth are nearly in line, in any order  at the start of spring, when the Sun is nearly over the equator  when the Sun and Moon are at approximately 90° to each other as seen from the Earth  only when the Sun and Moon are on the same side of the Earth and nearly in line  Definitions 
B  When the moon is at first quarter or third quarter phase, what type of tides will occur?  Spring  Neap  Perigean  Apogean  Definitions 
C  Neap tides occur only __________.  at approximately 28day intervals  when the Sun, Moon, and Earth are in line  when the Moon is at quadrature  at a new or full Moon  Definitions 
B  Neap tides occur __________.  when the Sun, Moon, and Earth are nearly in line, regardless of alignment order  when the Sun and Moon are at approximately 90° to each other, as seen from the Earth  only when the Sun and Moon are on the same sides of the Earth and are nearly in line  at the start of spring, when the Sun is nearly over the equator  Definitions 
B  Neap tides occur when the __________.  Sun and Moon are in conjunction  Moon is in its first quarter and third quarter phases  Sun and Moon are on opposite sides of the Earth  Moon's declination is maximum and opposite to that of the Sun  Definitions 
A  The class of tide that prevails in the greatest number of important harbors on the Atlantic Coast is __________.  semidiurnal  interval  mixed  diurnal  Definitions 
C  In some parts of the world there is often a slight fall in tide during the middle of the high water period. The effect is to create a longer period of stand at higher water. This special feature is called a(n) __________.  apogean tide  bore  double high water  perigean tide  Definitions 
D  An important lunar cycle affecting the tidal cycle is called the nodal period. How long is this cycle?  18 days  6 years  16 days  19 years  Definitions 
D  Which statement is TRUE concerning apogean tides?  They cause diurnal tides to become mixed.  They occur when the Moon is nearest the Earth.  They occur only at quadrature.  They have a decreased range from normal.  Definitions 
B  When the Moon's declination is maximum north, which of the following will occur?  Equatorial tides  Tropic tides  Mixedtype tides  Higher high tides and lower low tides  Definitions 
C  Tropic tides are caused by the __________.  Moon being at perigee  Sun and Moon both being near 0° declination  Moon being at its maximum declination  Moon crossing the equator  Definitions 
B  Which statement is TRUE concerning equatorial tides?  They are used as the basis for the vulgar establishment of the port.  The difference in height between consecutive high or low tides is at a minimum.  They occur when the Moon is at maximum declination north or south.  They occur when the Sun is at minimum declination north or south.  Definitions 
C  Priming of the tides occurs __________.  when the Earth, Moon, and Sun are lying approximately on the same line  at times of new and full Moon  when the Moon is between new and first quarter and between full and third quarter  when the Moon is between first quarter and full and between third quarter and new  Definitions 
A  What does the term "tide" refer to?  Vertical movement of the water  Horizontal movement of the water  Salinity content of the water  Mixing tendency of the water  Definitions 
A  Mean low water is the average height of __________.  all low waters  high waters and low waters  the surface of the sea  the lower of the two daily low tides  Definitions 
D  Mean high water is the average height of __________.  the higher high waters  the lower high waters  the lower of the two daily tides  all high waters  Definitions 
B  The average height of the surface of the sea for all stages of the tide over a 19 year period is called __________.  mean high water  mean sea level  mean low water  halftide level  Definitions 
D  The diurnal inequality of the tides is caused by __________.  the Moon being at apogee  the Moon being at perigee  changing weather conditions  the declination of the Moon  Definitions 
D  What is the definition of height of tide?  The vertical difference between a datum plane and the ocean bottom  The vertical distance from the surface of the water to the ocean floor  The vertical difference between the heights of low and high water  The vertical distance from the tidal datum to the level of the water at any time  Definitions 
C  The height of tide is the __________.  difference between the depth of the water and the high water tidal level  depth of water at a specific time due to tidal effect  difference between the depth of the water and the area's tidal datum  difference between the depth of the water at high tide and the depth of the water at low tide  Definitions 
B  The vertical distance from the tidal datum to the level of the water is the __________.  actual water depth  height of tide  charted depth  range of tide  Definitions 
C  The distance between the surface of the water and the tidal datum is the __________.  actual water depth  range of tide  height of tide  charted depth  Definitions 
A  The vertical distance from the tidal datum to the level of the water is the __________.  height of tide  charted depth  range of tide  actual water depth  Definitions 
C  The distance between the surface of the water and the tidal datum is the __________.  range of tide  actual water depth  height of tide  charted depth  Definitions 
C  What is the definition of height of tide?  The vertical difference between the heights of low and high water  The vertical distance from the surface of the water to the ocean floor  The vertical distance from the tidal datum to the level of the water at any time  The vertical difference between a datum plane and the ocean bottom  Definitions 
A  The height of tide is the __________.  difference between the depth of the water and the area's tidal datum  difference between the depth of the water at high tide and the depth of the water at low tide  depth of water at a specific time due to tidal effect  difference between the depth of the water and the high water tidal level  Definitions 
D  The difference between the heights of low and high tide is the __________.  depth  distance  period  range  Definitions 
A  The difference between the heights of low and high tide is the __________.  range  distance  period  depth  Definitions 
C  The difference between the heights of low and high tide is the __________.  distance  period  range  depth  Definitions 
C  The difference between the heights of low and high tide is the __________.  depth  period  range  distance  Definitions 
B  When there are small differences between the heights of two successive high tides or two low tides, in a tidal day, the tides are called __________.  diurnal  semidiurnal  solar  mixed  Definitions 
C  Spring tides are tides that __________.  occur in the spring of the year  are unpredictable  have lows lower than normal and highs higher than normal  have lows higher than normal and highs lower than normal  Definitions 
B  The point where the vertical rise or fall of tide has stopped is referred to as __________.  the reverse of the tide  the stand of the tide  the rip tide  slack water  Definitions 
B  The period at high or low tide during which there is no change in the height of the water is called the __________.  reversing of the tide  stand of the tide  plane of the tide  range of the tide  Definitions 
C  What will be the velocity of the tidal current at New London Harbor Entrance, CT, at 1615 EST (ZD +5) on 26 December 1983?  0.7 knot  0.9 knot  0.2 knot  0.4 knot  Current Problems 
C  What will be the velocity and direction of the tidal current at Old Ferry Point, NY, at 1340 EST (ZD +5) on 5 February 1983?  1.0 knot at 076°T  0.8 knot at 240°T  1.4 knots at 076°T  0.8 knot at 060°T  Current Problems 
C  What will be the velocity of the tidal current 6 miles south of Shoal Point, NY, at 1850 DST (ZD +4) on 9 July 1983?  0.2 knot ebb  1.2 knot ebb  0.2 knot flood  1.4 knot flood  Current Problems 
B  What will be the velocity of the tidal current southwest of Hunts Point, NY, at 0932 EST (ZD +5) on 16 March 1983?  0.9 knot  1.5 knots  1.8 knots  2.3 knots  Current Problems 
C  What will be the velocity and direction of the tidal current at Mobile River Entrance, AL, at 0915 CDT (ZD +5) on 13 May 1983?  0.7 knot at 151°T  0.1 knot at 333°T  0.3 knot at 333°T  1.8 knots at 025°T  Current Problems 
D  What is the velocity of the tidal current at the east end of Pollock Rip Channel at 1700 DST (ZD +4) on 23 July 1983?  0.6 knot ebbing  0.8 knot flooding  1.9 knots flooding  1.5 knots flooding  Current Problems 
D  You will be entering the Mystic River in Connecticut. What is the current at the Highway Bridge at 1900 EST (ZD +5) on 24 January 1983?  2.5 knots ebbing  2.2 knots flooding  Slack water  Slight ebb  Current Problems 
D  What will be the velocity of the tidal current at Port Jefferson Harbor Entrance, NY, at 1600 EST (ZD +5) on 23 December 1983?  2.0 knots  1.6 knots  0.9 knot  1.1 knots  Current Problems 
D  What will be the velocity of the tidal current south of Doubling Point, ME, at 1357 EST (ZD +5) on 3 April 1983?  2.6 knots  1.3 knots  0.9 knot  2.0 knots  Current Problems 
B  What will be the direction and velocity of the tidal current at Provincetown Harbor, MA, at 1405 DST (ZD +4) on 5 May 1983?  0.0 knot at 135°T  0.4 knot at 315°T  0.2 knot at 135°T  0.6 knot at 315°T  Current Problems 
B  What will be the velocity of the tidal current in Bolivar Roads, Texas, at a point 0.5 mile north of Ft. Point, on 23 November 1983 at 0330 CST (ZD +6)?  0.8 kt  Slack water  3.4 kts  1.2 kts  Current Problems 
D  What will be the velocity of the tidal current at Grant's Tomb, 123rd Street, NY, NY, at 1412 EST (ZD +5) on 22 March 1983?  0.5 knot  1.3 knots  0.8 knot  1.1 knots  Current Problems 
D  What will be the velocity of the tidal current at 0.2 mile SSW of Clason Point, NY, at 1125 on 17 April 1983?  0.5 knot  1.9 knots  0.8 knot  1.1 knots  Current Problems 
B  What will be the velocity of the tidal current at Port Royal, VA, at 1505 DST (ZD +4) on 4 June 1983?  0.0 knot  0.4 knot  0.7 knot  0.1 knot  Current Problems 
C  What is the predicted velocity of the tidal current 2 miles west of Southwest Ledge for 2330 DST (ZD +4) on 7 September 1983?  1.6 knots  2.2 knots  1.3 knots  1.9 knots  Current Problems 
C  What will be the velocity of the tidal current 1.0 mile southwest of Lewis Pt., RI, at 1501 EST (ZD +5) on 4 April 1983?  1.4 knots  1.6 knots  0.7 knot  1.9 knots  Current Problems 
B  What will be the velocity of the tidal current at Coxsackie, NY, at 0945 EST (ZD +5) on 11 March 1983?  0.3 knot  0.7 knot  1.2 knots  1.9 knots  Current Problems 
B  What will the velocity and direction of the tidal current be at Port Morris, NY, at 1135 DST (ZD +4) on 13 May 1983?  3.1 knots at 045°T  negligible at 220°T  1.2 knots at 220°T  1.0 knot at 045°T  Current Problems 
C  What will be the velocity of the tidal current 4.5 miles east of Smith Point, VA, at 0630 DST (ZD +4) on 6 May 1983?  1.0 knot  0.5 knot  0.3 knot  0.7 knot  Current Problems 
B  What will be the velocity of the tidal current at Bournedale, MA, at 1135 DST (ZD +4) on 3 May 1983?  1.1 knots  3.0 knots  2.3 knots  3.6 knots  Current Problems 
B  What will be the time of maximum flood current at Sagamore Bridge on the Cape Cod Canal during the morning of 6 December 1983 (ZD +5)?  1020  0708  0716  0712  Current Problems 
A  You are bound for the Chelsea docks in the Hudson River. The Captain wants to arrive at the docks at the first slack water on 28 July 1983. You are keeping daylight saving time. What time should you be at the docks?  0215  0911  0811  0530  Current Problems 
C  You are on a coastwise voyage bound for Marcus Hook, PA. Your speed is 15 knots. You wish to use the flood tide to facilitate docking starboard side to, heading seaward. To have the most favorable tide throughout, you should time your arrival at the entrance to Delaware Bay __________.  for 1 hour before flood begins  for 1 hour after flood begins  for 3 hours after flood begins  for 1 hour before ebb begins  Current Problems 
A  Your vessel is off Barnegat, NJ with the wind coming out of the east. What will be the approximate direction of the winddriven current?  254°  106°  016°  286°  Current Problems 
B  Your vessel is off Fire Island, NY with winds from the southwest. What will be the approximate direction of the winddriven current?  014°  076°  170°  256°  Current Problems 
A  Your vessel is at the approaches to Savannah, GA, with the wind coming out of the west. What will be the approximate direction of the winddriven current?  080°  280°  100°  260°  Current Problems 
C  The moon is full and at perigee on 20 January 1983. What is the maximum current you could expect at 2350 (ZD +5) at Nantucket Shoals?  0.7 knot  0.5 knot  1.0 knot  0.8 knot  Current Problems, 2nd Matechief Mate 
A  You are at anchor in the anchorage at the entrance to Delaware Bay. You weigh anchor at 1445 DST (ZD +4) on 24 July 1983 and proceed northbound enroute to Philadelphia at a speed of 10 knots. Which of the following should you expect to experience?  a weak flood between Reedy Island and Edgemoor  an ebb current north of New Castle, DE  a flood current from Ship John Shoal Lt. to Philadelphia  a flood current the entire trip  Current Problems, 2nd Matechief Mate 
B  You get underway from the oil terminal at Marcus Hook, PA, at 0815 ZT (ZD +5) on 20 February 1983, enroute to sea. You will be turning for 11 knots. What is the approximate current when you are abreast Reedy Island?  1.5 knots flooding  2.0 knots ebbing  0.5 knot flooding  Slack  Current Problems, 2nd Matechief Mate 
B  You get underway from the shipyard in Chester, PA, at 1515 DST (ZD +4) on 6 August 1983, enroute to sea. You will be turning for eight knots. What current can you expect at Fourteen Foot Bank Light?  0.5 knot ebbing  1.3 knots ebbing  Slack  1.7 knots ebbing  Current Problems, 2nd Matechief Mate 
A  You want to transit Pollock Rip Channel, MA, on 6 April 1983. What is the period of time around the 0955 (ZD +5) slack in which the current does not exceed 0.3 knot?  0935 to 1017  0955 to 1044  0940 to 1010  0911 to 0955  Current Problems, 2nd Matechief Mate 
D  You want to transit Hell Gate, NY on 23 July 1983. What is the period of time around the AM (ZD +4) slack before ebb when the current will be less than 0.3 knot?  0348 to 0356  0844 to 0852  0939 to 0957  0943 to 0953  Current Problems, 2nd Matechief Mate 
B  You will transit the Cape Cod Canal on 7 November 1983. If you arrive at the R R Bridge at 1655 EST (ZD +5), for what period of time during your transit will you have currents of not more than 0.5 knot?  1655 to 1709  1648 to 1702  1638 to 1655  1631 to 1719  Current Problems, 2nd Matechief Mate 
A  You want to transit Hell Gate on 23 July 1983. What is the period of time around the AM (ZD +4) slack before ebb when the current will be less than 0.5 knot?  0939 to 0957  0943 to 0953  0844 to 0852  0348 to 0356  Current Problems, 2nd Matechief Mate 
C  Determine the first time after 1200 EST (ZD +5) when the velocity of the current will be 0.5 knot on 18 November 1983, at Marcus Hook, PA.  1226  1221  1239  1312  Current Problems, 2nd Matechief Mate 
C  What is the period of time from around 1008 DST (ZD +4) at Canapitsit Channel, MA, on 7 August 1983, in which the current does not exceed 0.4 knot?  1000 to 1024  0945 to 1031  0955 to 1021  0950 to 1026  Current Problems, 2nd Matechief Mate 
C  Determine the time after 0730 EST (ZD +5) when the velocity of the current will be 2.1 knots on 26 March 1983, at Fort Pulaski, GA.  0802  0821  0840  0812  Current Problems, 2nd Matechief Mate 
C  Determine the duration of the first PM slack water on 3 March 1983, east of the Statue of Liberty, when the current is less than 0.1 knot.  19 minutes  10 minutes  13 minutes  16 minutes  Current Problems, 2nd Matechief Mate 
A  Determine the time after 0300 CST (ZD +6) when the velocity of the tidal current will be 0.5 knot on 16 April 1983, at Port Arthur Canal Entrance, TX.  0507  0554  0538  0436  Current Problems, 2nd Matechief Mate 
C  The predicted time that the ebb begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1630 and turn for 12 knots, at what point will you lose the flood current?  Reedy Island  Ship John Shoal Lt.  New Castle  Mile 44  Current Problems, 2nd Matechief Mate 
A  The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1430 and turn for 11 knots, at what point will you lose the ebb current?  Liston Pt.  Ship John Shoal Lt.  New Castle  Arnold Pt.  Current Problems, 2nd Matechief Mate 
A  The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1600 and turn for 8 knots, at what point will you lose the ebb current?  Mile 63  Marcus Hook  Billingsport  Mile 52  Current Problems, 2nd Matechief Mate 
A  The predicted time that the flood begins at the entrance to Delaware Bay is 1526. You are anchored off Chestnut St. in Philadelphia. If you get underway bound for sea at 1300 and turn for 13 knots, at what point will you lose the flood current?  Billingsport  Marcus Hook  New Castle  Mile 52  Current Problems, 2nd Matechief Mate 
B  What will be the set of the rotary current at Nantucket Shoals at 1245 (ZD +5) 14 January 1983?  162°  125°  015°  225°  Current Problems, 2nd Matechief Mate 
D  The wind at Frying Pan shoals has been southsouthwesterly at an average velocity of 30 mph. The predicted set and drift of the rotary current are 232° at 0.8 knot. What current should you expect?  092° at 1.3 knots  065° at 1.2 knots  139° at 0.6 knot  224° at 0.4 knot  Current Problems, 2nd Matechief Mate 
D  The wind in the vicinity of Nantucket Shoals Light has been southerly at an average speed of 23 mph. The predicted set and drift of the rotary current is 225° at 0.8 knot. What current should you expect?  218° at 1.1 knots  247° at 0.7 knot  025° at 1.8 knots  235° at 0.5 knot  Current Problems, 2nd Matechief Mate 
A  The wind at Frying Pan shoals has been westnorthwesterly at an average velocity of 40 mph. The predicted set and drift of the rotary current are 323° at 0.6 knot. What current should you expect?  018° at 0.4 knot  052° at 0.6 knot  089° at 0.9 knot  001° at 0.7 knot  Current Problems, 2nd Matechief Mate 
D  The wind at Frying Pan shoals has been northnortheasterly at an average velocity of 30 mph. The predicted set and drift of the rotary current are 355° at 0.8 knot. What current should you expect?  010° at 1.1 knots  047° at 0.3 knot  279° at 1.0 knot  325° at 0.7 knot  Current Problems, 2nd Matechief Mate 
A  The wind at Frying Pan shoals has been northwesterly at an average velocity of 22 mph. The predicted set and drift of the rotary current are 125° at 0.6 knot. What current should you expect?  119° at 0.9 knot  225° at 0.6 knot  340° at 0.4 knot  172° at 1.1 knots  Current Problems, 2nd Matechief Mate 
B  At what time after 1400 EST (ZD +5), on 4 January 1983, will the height of the tide at Port Wentworth, GA, be 3.0 feet?  1630  1653  1612  1718  Tide Problems 
C  Determine the height of the tide at 1430 EST (ZD +5) at New Bedford, MA, on 10 April 1983.  1.2 feet  1.1 feet  1.4 feet  1.7 feet  Tide Problems 
D  Determine the height of the tide at 2045 EST (ZD +5) at Augusta, ME, on 8 March 1983.  2.6 feet (0.8 meter)  1.4 feet (0.5 meter)  2.3 feet (0.7 meter)  1.9 feet (0.6 meter)  Tide Problems 
C  Find the height of the tide at Port Wentworth, GA, on 5 October 1983, at 1840 DST (ZD +4).  4.0 feet  3.5 feet  4.4 feet  3.0 feet  Tide Problems 
D  For 3 November 1983, at 0830 EST (ZD +5) at Catskill, NY, what is the predicted height of tide?  1.3 feet (0.4 m)  +0.9 foot (+0.3 m)  +0.1 foot (+0.0 m)  0.6 foot (0.2 m)  Tide Problems 
A  On 10 August 1983 you will dock near Days Point, Weehawken, on the Hudson River, at 1800 DST (ZD +4). The charted depth alongside the pier is 24 feet (7.3 meters). What will be the depth of water when you dock?  23.9 feet (7.2 m)  26.3 feet (8.0 m)  23.5 feet (7.1 m)  24.9 feet (7.5 m)  Tide Problems 
C  On 2 November 1983, at 1630 EST (ZD +5), what will be the predicted height of tide at Fulton, FL?  5.6 feet (1.7 meters)  3.4 feet (1.0 meters)  2.8 feet (0.8 meters)  4.2 feet (1.3 meters)  Tide Problems 
B  On 23 March 1983, at Kingston Point, NY, what is the earliest time after 1700 EST (ZD +5) that the predicted tide will be +2.0 feet?  2030  1854  1730  1800  Tide Problems 
D  On 26 February 1983, at 1750 EST (ZD +5) what will be the predicted height of tide at New Haven (city dock), CT?  1.6 feet (0.5 meter)  .3 foot (0.1 meter)  1.3 feet (0.4 meter)  .6 foot (0.2 meter)  Tide Problems 
D  On 27 April 1983, at 1105 DST (ZD +4), what will be the predicted height of tide at Falkner Island, CT?  6.2 feet (1.9 m)  5.6 feet (1.7 m)  6.8 feet (2.7 m)  5.3 feet (1.6 m)  Tide Problems 
D  On 5 March 1983, at 0630 EST (ZD +5), what will be the predicted height of tide at Ocracoke, Ocracoke Inlet, NC?  2.3 feet  1.2 feet  1.9 feet  0.1 foot  Tide Problems 
A  On 6 July 1983, at 1520 DST (ZD +4) what will be the predicted height of tide at Newburgh, NY?  0.6 foot  1.2 feet  1.7 feet  2.1 feet  Tide Problems 
D  On 6 July 1983, at 1830 DST (ZD +4), what will be the predicted height of tide at Newburgh, NY?  2.6 feet  2.4 feet  3.3 feet  2.0 feet  Tide Problems 
B  On 6 June 1983, at 1719 EST (ZD +5), what will be the predicted height of tide at Chester, PA?  0.8 feet( 0.2 meters)  1.1 feet (0.3 meters)  4.7 feet (1.4 meters)  3.5 feet (1.1 meters)  Tide Problems 
C  The mean tide level at Peaks Island, ME, is __________.  3.2 feet (1.0 meters)  2.5 feet (0.8 meters)  4.5 feet (1.4 meters)  1.8 feet (0.5 meters)  Tide Problems 
A  What will be the height of tide at Gargathy Neck, VA, at 1800 DST (ZD +4), on 16 August 1983?  2.9 feet  2.3 feet  3.6 feet  3.3 feet  Tide Problems 
C  What will be the height of tide at Three Mile Harbor Entrance, Gardiners Bay, NY, at 0700 (ZD +5) on 14 Nov 1983?  1.1 feet (0.3 meters)  2.2 feet (0.7 meters)  1.7 feet (0.5 meters)  1.9 feet (0.6 meters)  Tide Problems 
A  What will be the time (ZD +5) of the second high tide at Weymouth Fore River Bridge, MA, on 12 November 1983?  1650  1643  1647  1639  Tide Problems 
B  What will be the time after 0300 (ZD +4), on 5 March 1983, when the height of the tide at Port of Spain, Trinidad, will be 2.5 feet (.76 meters)?  0618  0602  0634  0548  Tide Problems 
C  What will be the time after 0600 (ZD +3), on 6 March 1983, that the height of the tide at Puerto Rosales, Argentina, will be 9.0 feet (2.7 meters)?  0754  0740  0922  0840  Tide Problems 
D  What will be the time after 0800 EST (ZD +5) that the height of the tide at South Freeport, ME, will be 6.0 feet (1.8 meters) on 7 November 1983?  942  936  1001  951  Tide Problems 
C  What will be the time after 1000 EST (ZD +5), on 4 March 1983, that the height of the tide at City Island, NY, will be 2.4 feet?  1240  1248  1228  1244  Tide Problems 
B  What would be the height of the tide at Crisfield, MD, at 0310 DST (ZD +4) on 6 May 1983?  1.1 feet  0.5 foot  1.6 feet  0.1 foot  Tide Problems 
D  Your vessel will be docking at Chester, PA, during the evening of 22 April 1983. The chart shows a depth of 20 feet (6.1 meters) at the pier. What will be the depth of water available at 1856 EST (ZD +5)?  22.4 feet (6.8 meters)  24.9 feet (7.6 meters)  25.7 feet (7.8 meters)  23.4 feet (7.2 meters)  Tide Problems 
C  Your vessel will be docking at Chester, PA, during the evening of 22 April 1983. The chart shows a depth of 20 feet (6.1 meters) at the pier. What will be the depth of water available at 2310 EST (ZD +5)?  25.8 feet (7.9 meters).  20.8 feet (6.3 meters)  24.7 feet (7.5 meters)  19.2 feet (5.9 meters)  Tide Problems 
A  If the height of the tide at low water is 0.0 feet, the range is 9.0 feet, and the duration is 06h 00m. What is the height of the tide 02h 12m before high water ?  6.3 feet  8.3 feet  2.7 feet  4.7 feet  Tide Problems 
C  The charted channel depth at Eastport, ME, is 28 feet. You are drawing 31.5 feet and wish 2 feet clearance under the keel. What is the earliest time after 1700 (ZD +4) on 6 September 1983 that you can enter the channel?  2003  1825  1915  1903  Tide Problems, 2nd Matechief Mate 
D  The charted depth alongside the south face of Mystic Pier, Charlestown, MA, is 35 feet. Your maximum draft is 38 feet. You wish to have 2 feet under the bottom, on a rising tide, when you go alongside to discharge a heavy lift. What is the earliest time after 0900 EST (ZD +5), on 2 February 1983, that you can dock?  1050  1020  1127  1137  Tide Problems, 2nd Matechief Mate 
A  You are to sail from Elizabethport, N.J., on 17 November 1983 with a maximum draft of 27 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 25.5 feet. The steaming time from Elizabethport to the obstruction is 1h 50m. What is the earliest time (ZD +5) you can sail on 17 November and pass over the obstruction with 2 feet of clearance?  121  0059  0159  0221  Tide Problems, 2nd Matechief Mate 
C  You are to sail from Elizabethport, N.J., on 22 May 1983, with a maximum draft of 28 feet. You will pass over an obstruction in the channel near Sandy Hook that has a depth of 26.5 feet. The steaming time from Elizabethport to the obstruction is 1h 40m. What is the earliest time (ZD + 4) you can sail on the afternoon of 22 May and pass over the obstruction with 2 feet of clearance?  1424  1454  1342  1405  Tide Problems, 2nd Matechief Mate 
D  You are to sail from Elizabethport, NJ, on 17 November 1983 with a maximum draft of 27 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 26 feet. The steaming time from Elizabethport to the obstruction is 1h 50m. What is the earliest time (ZD +5) you can sail on 17 November and pass over the obstruction with 2 feet of clearance?  124  0218  0154  0056  Tide Problems, 2nd Matechief Mate 
A  You are to sail from Elizabethport, NJ, on 22 May 1983 with a maximum draft of 28 feet. You will pass over an obstruction in the channel near Sandy Hook that has a charted depth of 27 feet. The steaming time from Elizabethport to the obstruction is 1h 40m. What is the earliest time (ZD +4) you can sail on the afternoon of 22 May and pass over the obstruction with 3 feet of clearance?  1407  1331  1303  1242  Tide Problems, 2nd Matechief Mate 
C  You will be loading in Boston Harbor to a maximum draft of 32'06". The charted depth of an obstruction in the channel near Boston Light is 30 feet and you wish to have 3 feet of keel clearance. The steaming time from the pier to the obstruction is 01h 05m. What is the latest time (ZD +4) you can sail on 17 May 1983 and meet these requirements?  2350  1821  1728  1610  Tide Problems, 2nd Matechief Mate 
B  Your draft is 24 feet. You wish to pass over an obstruction near Lovell Island, MA, on 6 May 1983. The charted depth is 22 feet. Allowing a safety margin of 3.0 feet, what is the earliest time after 0200 DST (ZD +4) that this passage can be made?  215  0347  0310  0245  Tide Problems, 2nd Matechief Mate 
A  Your vessel has a draft of 23 feet. On 23 June 1983 you wish to pass over a temporary obstruction near Beaufort, SC, that has a charted depth of 22 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 1600 DST (ZD +4) that this passage can be made?  1750  1855  1815  1944  Tide Problems, 2nd Matechief Mate 
D  Your vessel has a draft of 24 feet. On 7 April 1983 you wish to pass over a temporary obstruction near Lovell Island, MA, that has a charted depth of 22 feet. Allowing for a safety margin of 3.1 feet under your keel, what is the earliest time after 0100 EST (ZD +5) that this passage can be made?  304  0248  0356  0342  Tide Problems, 2nd Matechief Mate 
C  Your vessel has a draft of 34 feet. On 8 October 1983 you wish to pass over an obstruction near Jaffrey Point, NH, that has a charted depth of 31 feet. Allowing for a safety margin of 3 feet, what is the earliest time after 0900 DST (ZD +4) that this passage can be made?  1159  0920  1029  1120  Tide Problems, 2nd Matechief Mate 