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Deck · 146 questions

Expired / General Navigation - USCG Exam Questions

This is a retired question set the Coast Guard no longer draws exams from. It stays online for reference; study the current Deck modules first.

Chart reading, the U.S. Aids to Navigation System, compass error, tides and currents, and the standard navigation publications.

Every question below is a real U.S. Coast Guard exam question with four choices. Answer one and the correct choice is revealed instantly, with the USCG reference and illustration where the question uses one.

Random question Start at question 13 Build a timed exam

All Expired / General Navigation questions

Questions 1–100 of 146 · page 1 of 2

  1. #13 The principal purpose of magnetic compass adjustment is to __________.
  2. #53 While steaming on course 280°T, you sight a buoy showing a very quick-flashing (VQ) white light well to port. Maintaining course, you sight another bu...
  3. #57 The characteristic of a lighted cardinal mark may be __________.
  4. #70 You are underway on course 142°T when you sight a buoy bearing 105°T. The buoy's white light has a characteristic of continuous very-quick flashing. T...
  5. #73 You are underway in the North Sea on course 216°T when you sight a buoy bearing 021° relative. Under the IALA Buoyage System, you are in the best navi...
  6. #76 On approaching the English Channel on course 080°T, you note the symbol YBY near a charted buoy. You must pass __________.
  7. #110 In the IALA Buoyage System, preferred-channel-to-port or preferred-channel-to- starboard buoys, when fitted with lights, will show a __________.
  8. #112 Under the IALA cardinal system, a mark with a quick light showing 9 flashes every 15 seconds indicates that the safest water is on the __________.
  9. #116 Under the U.S. Aids to Navigation System on the Western Rivers, a preferred- channel buoy is __________.
  10. #126 While proceeding along the Norwegian coast on course 039°T, you sight the black- yellow-black banded buoy shown in illustration D021NG below, bearing... illustration
  11. #187 You are heading out to sea in a buoyed channel and see a quick-flashing green light on a buoy ahead of you. In U.S. waters, you should leave the buoy...
  12. #205 Aids to navigation marking the intracoastal waterway can be identified by __________.
  13. #215 Under the IALA-A Buoyage System, when entering from seaward, a buoy indicating the preferred channel is to starboard may have a __________.
  14. #216 While preparing to enter a Brazilian port, you see ahead a red and green horizontally- striped buoy. The upper band is red. What action should you tak...
  15. #269 You sight a spar buoy with the top mark shown in illustration D027NG below. You must take which of the following actions? illustration
  16. #287 Unlighted, red and green, horizontally-banded buoys with the topmost band red __________.
  17. #294 Under the IALA Buoyage System, which topmark shown in illustration D023NG below will be displayed on a safe water mark? illustration
  18. #298 Which buoy will NOT display white retroreflective material?
  19. #464 A large automated navigational buoy, such as those that have replaced some lightships, would be shown on a chart by which symbolin illustration D015NG... illustration
  20. #477 Sometimes foreign charts are reproduced by NGA. On such a chart, a wire- dragged, swept area may be shown in green or __________.
  21. #499 The U.S. Coast Guard publishes __________.
  22. #509 Civil twilight starts at 1812 zone time on 26 August, Your DR position at that time is LAT 21°06'S, LONG 14°56'W. Which statement concerning the plane...
  23. #608 The reaction of a gyrocompass to an applied force is known as __________.
  24. #610 The directive force of a gyrocompass __________.
  25. #611 Which statement about the gyrocompass is FALSE?
  26. #612 A system of reservoirs and connecting tubes in a gyro compass is called a __________.
  27. #613 At the master gyrocompass, the compass card is attached to the __________.
  28. #614 Indications of the master gyrocompass are sent to remote repeaters by the __________.
  29. #615 Gyrocompass repeaters reproduce the indications of the master gyrocompass. They are __________.
  30. #616 Error may be introduced into a magnetic compass by __________.
  31. #617 When crossing the magnetic equator the __________.
  32. #618 The quadrantal spheres are used to __________.
  33. #619 The purpose of the soft iron spheres mounted on arms on the binnacle is to compensate for __________.
  34. #620 Variation is the angular measurement between __________.
  35. #622 Which compensates for errors introduced when the vessel heels over?
  36. #623 True heading differs from magnetic heading by __________.
  37. #626 The difference in degrees between true north and magnetic north is called __________.
  38. #628 The Flinders bar on a magnetic compass compensates for the __________.
  39. #629 A single vertical magnet placed underneath the compass in the binnacle is used to compensate for __________.
  40. #636 If the magnetic heading is greater than the compass heading, the deviation is __________.
  41. #637 The difference between magnetic heading and compass heading is called __________.
  42. #747 The typical operating range of automatic identification systems (AIS) at sea is nominally __________.
  43. #749 You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T, 68 miles from you. What is the time to interce...
  44. #751 The type of fog that occurs on clear nights with very light breezes and forms when the earth cools rapidly ?
  45. #761 You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 343°T at 92 miles from you. What is the time to interce...
  46. #776 You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 343°T at 92 miles from you. What is the course to steer...
  47. #778 When using GPS, how many theoretical position lines are required for a two- dimensional fix?
  48. #797 You are enroute to assist vessel A. Vessel A is underway at 5 knots on course 063°T, and bears 136°T at 78 miles from you. What is the course to steer...
  49. #824 You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the time to inter...
  50. #841 While underway, a vessel over 100,000 gross tons with an automatic identification systems (AIS) is expected to broadcast all of the following informat...
  51. #846 While underway, automatic identification systems (AIS) broadcast all of the following information every 1 to 10 seconds EXCEPT the __________.
  52. #854 An automatic identification system (AIS) transponder transmits and receives information broadcasts on __________?
  53. #856 You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 042° at 105 miles from you. What is the course to steer...
  54. #858 What does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?
  55. #861 With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?
  56. #867 With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
  57. #868 Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT __________.
  58. #874 Your vessel is participating in the Voluntary Observing Ship Program. You are preparing WS Form B-80 as seen in illustration D041NG below. Three-quart... illustration
  59. #883 With respect to automatic identification systems (AIS) which of the following information is broadcast every one to ten seconds?
  60. #884 With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
  61. #886 With respect to automatic identification systems (AIS), which information is expected to be broadcast every 1 to 10 seconds?
  62. #888 With respect to automatic identification systems (AIS), which information is required to be broadcast every 1 to 10 seconds?
  63. #892 Automatic identification systems (AIS) are required to __________.
  64. #898 The short text messaging feature of the automatic identification system (AIS) allows for messages of up to __________.
  65. #901 Which of the following statements is TRUE regarding automatic identification systems (AIS)?
  66. #912 Vessels required to have an Automatic Radar Plotting Aid must have a device to indicate the __________.
  67. #915 You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 346°T at 68 miles from you. What is the course to ste...
  68. #936 An ECDIS is required to display which information?
  69. #939 An ECDIS is required to display which information?
  70. #943 ECDIS must give an alarm for which of the following cases?
  71. #944 ECDIS must give an alarm for which of the following cases?
  72. #945 You are underway on course 050°T and your maximum speed is 12 knots. The eye of a hurricane bears 120°T, 110 miles from your position. The hurricane i...
  73. #946 You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 284°T at 43 miles from you. What is the course to ste...
  74. #948 ECDIS must give an alarm for which of the following cases?
  75. #951 Which data must ECDIS be able to record at one-minute intervals?
  76. #965 Which Electronic Plotting Aid (EPA) data should you use in order to determine if a close quarters situation will develop with a target vessel?
  77. #978 With respect to failure warnings and status indications, GPS receivers should provide, at a minimum, __________.
  78. #1011 You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233°T, and bears 264°T at 68 miles from you. What is the course to ste...
  79. #1013 You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 248°T at 64 miles from you. What is the course to ste...
  80. #1015 You are enroute to assist vessel A. Vessel A is underway at 6 knots on course 133°T, and bears 042°T, 105 miles from you. What is the time to intercep...
  81. #1017 You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033°T, and bears 284°T, 43 miles from you. What is the time to interce...
  82. #1021 Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope ?
  83. #1035 A Doppler speed log indicates speed through the water __________.
  84. #1110 In a tropical cyclone in the Northern Hemisphere, a vessel hove to with the wind shifting counterclockwise would be __________.
  85. #1127 Which of the following is a standard correction applied to the reading of an aneroid barometer?
  86. #1189 The area of strong westerly winds occurring between 40°S and 60°S latitude is called the __________.
  87. #1374 You are in a channel in U.S. waters near an industrial plant with a load/discharge facility for barges. You hear a siren being sounded at the facility...
  88. #1376 Your ship is returning to New Orleans from a foreign voyage and carrying a bulk cargo of anhydrous ammonia. You must notify the Captain of the Port, N...
  89. #1383 Your longitude is 124°E, and your local mean time is 0520 on the 5th of the month. The mean time and date at Greenwich is __________.
  90. #1389 A vessel crossing a river on the Western Rivers, must keep out of the way of a power- driven vessel __________.
  91. #1390 Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 20 minutes. What current are you...
  92. #1407 You plot a fix using three lines of position and find they intersect in a triangle. You should plot the position of the vessel __________.
  93. #1460 You are outbound in a channel marked by a range astern. The range line is 273°T. You are steering 090°T and have the range in sight as shown in illust... illustration
  94. #1462 A facility used for the discharge of a cargo of a particular hazard, such as chlorine, butane or ethane, must have what to warn water traffic of an im...
  95. #1477 In the horizon system of coordinates what is equivalent to the parallels of declination of the celestial equator system?
  96. #1500 Some locations maintain a zone time of -13. What are the zone time and date if the Greenwich time and date are 2152, 10 January?
  97. #1505 A plane that cuts the Earth's surface and passes through the poles will always form __________.
  98. #1514 Except for N-S courses, and E-W courses on the equator, a great circle track between two points, when compared to a rhumb line track between the same...
  99. #1516 On which route is a towing vessel over 39.4 feet in length NOT required to carry an echo-sounding device?
  100. #1534 A backlash below a lock is defined as a __________.

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The Deck pool holds the current U.S. Coast Guard questions for every deck credential, from Able Seaman and the OUPV six-pack up to unlimited Master. Each question is multiple choice with four options, graded instantly, with the USCG reference shown where one exists.