USCGQ
Log in Start free
USCGQ
Toggle sidebar
Home
Deck
General Navigation
Start practicing

Deck · 2,138 questions

General Navigation - USCG Exam Questions

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 Build a timed exam

All General Navigation questions

Questions 501–600 of 2,138 · page 6 of 22

  1. #523 In the United States, short-range radio navigational warnings are broadcast by the __________.
  2. #524 In addition to the National Weather Service, what agency provides plain-language radio weather advisories for the coastal waters of the United States?
  3. #525 The maritime radio system consisting of a series of coast stations transmitting coastal warnings is called __________.
  4. #526 Chart correction information is NOT disseminated through the __________.
  5. #527 Information about temporary, short term changes affecting the safety of navigation in U.S. waters is distributed to navigational interests by the ____...
  6. #528 Which publication indicates the HYDROLANTS or HYDROPACS issued since the previous working day?
  7. #529 The Local Notice to Mariners is usually published __________.
  8. #530 You are informed of defects or changes in aids to navigation by __________.
  9. #531 Charts should be corrected by using information published in the __________.
  10. #532 Information for updating nautical charts is primarily found in the __________.
  11. #533 Which publication contains information on Naval Control of Shipping (NCS) in time of emergency or war?
  12. #534 On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to voluntary Naval Control of...
  13. #535 Which Naval Control of Shipping publication should be aboard your vessel?
  14. #536 Which Naval Control of Shipping publication should be aboard your vessel?
  15. #537 Naval Control of Shipping (NCS) publications should be __________.
  16. #538 After inventorying the Naval Control of Shipping publications you find there is no copy of ATP-2, Volume II "Allied Control of Shipping Manual - Bridg...
  17. #539 When a merchant vessel is under the Naval Control of Shipping Organization in wartime, naval authorities may give orders pertaining to __________.
  18. #540 Which statement about Naval Control of Shipping in wartime is TRUE?
  19. #541 Which publication is NOT carried on board U.S. merchant vessels operating under Naval Control of Shipping?
  20. #542 Your vessel's operators send a message that your vessel has been consigned to Naval Control of Shipping. The message will refer you to __________.
  21. #543 On a transpacific voyage, you receive a message from your vessel's operators saying that your vessel has been consigned to Naval Control of Shipping....
  22. #544 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated ROUTINE will be delivered within _____...
  23. #545 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated PRIORITY will be delivered within ____...
  24. #546 You are proceeding under NCS (Naval Control of Shipping) and wish to send a message warning of a hurricane. Which precedence would you assign this mes...
  25. #547 You are proceeding under NCS (Naval Control of Shipping) when it becomes necessary to send a distress message. Which precedence would you assign this...
  26. #548 You are proceeding under NCS (Naval Control of Shipping) and wish to send a message concerning an initial enemy contact. Which precedence would you as...
  27. #549 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated IMMEDIATE will be delivered within ___...
  28. #550 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated PRIORITY will be delivered within ____...
  29. #551 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated FLASH will be delivered within _______...
  30. #552 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated IMMEDIATE will be delivered within ___...
  31. #553 In a national emergency, when communicating via the Navy, messages are sent by precedence. A message designated FLASH will be delivered within _______...
  32. #554 You are proceeding under NCS (Naval Control of Shipping) and wish to send a message concerning an initial enemy contact. Which precedence will you ass...
  33. #555 You are proceeding under NCS (Naval Control of Shipping) when you wish to send a message concerning your ships diversion. Which precedence would you a...
  34. #556 Allied Naval Control of Shipping (NCS) has been established. Which statement is TRUE?
  35. #557 Your ship is in a neutral port when full Naval Control of Shipping is established. You may expect to be boarded and instructed by a(n) __________.
  36. #558 In time of war Naval Control of Shipping Authorities may give orders concerning the __________.
  37. #559 At the outbreak of war your ship is caught in an enemy port. Which statement is FALSE?
  38. #560 Defense plans may cause the operation of electronic aids to navigation to be suspended with __________.
  39. #561 Under defense plans, operation of electronic aids may be temporarily suspended with __________.
  40. #562 You will be advised of any hazardous areas due to the fallout of a nuclear explosive by a message with the code word __________.
  41. #563 General information on enroute weather and climate is found in __________.
  42. #564 You are preparing to take a tow from San Diego to Portland, OR. Good seamanship would require that you have on board, available for reference and use,...
  43. #565 Which publication would NOT be used on a voyage from Houston to New York?
  44. #566 The Sailing Directions (Enroute) contain information on __________.
  45. #567 The Sailing Directions (Enroute) contain information on all of the following EXCEPT __________.
  46. #568 The Sailing Directions are published in the Enroute format and the __________.
  47. #569 You are planning a voyage from New York to Norway via the English Channel. Which publication contains information on the dangers to navigation in the...
  48. #570 You are planning a voyage from San Francisco to Japan. Which publication contains information on the ocean routes?
  49. #571 Information on search and rescue procedures and special, local communications used in Mexican waters will be found in the __________.
  50. #572 The Sailing Directions contain information on __________.
  51. #573 Where would you obtain data on currents for areas of the world not covered by the U.S. National Ocean Service?
  52. #574 Which publication requires infrequent corrections?
  53. #575 What publication contains information about the port facilities in Cadiz, Spain?
  54. #576 General information about the location, characteristics, facilities, and services for U.S. and foreign ports may be obtained from which publication?
  55. #577 The heading of a vessel is indicated by what part of the compass?
  56. #578 Eight points of a compass are equal to how many degrees?
  57. #579 How many degrees are there on a compass card?
  58. #580 What is the compass course of a vessel heading NNW?
  59. #581 One point of a compass is equal to how many degrees?
  60. #582 What is the compass course of a vessel heading SSW?
  61. #583 What is the compass course of a vessel heading WSW?
  62. #584 What is the compass course of a vessel heading WNW?
  63. #585 What is the compass course of a vessel heading SSE?
  64. #586 What is the compass course of a vessel heading SE?
  65. #587 What is the compass course of a vessel heading ESE?
  66. #588 What is the compass course of a vessel heading ENE?
  67. #589 What is the compass course of a vessel heading NE?
  68. #590 Which of the following is a compass card without north-seeking capability that is used for relative bearings?
  69. #591 The heading of a vessel is indicated by what part of the compass?
  70. #592 A vessel heading NW is on a course of __________.
  71. #593 A vessel heading NE is on a course of __________.
  72. #594 A vessel heading SSW is on a course of __________.
  73. #595 A vessel heading WSW is on a course of __________.
  74. #596 A vessel heading SSE is on a course of __________.
  75. #597 A vessel heading ESE is on a course of __________.
  76. #598 A vessel heading NNE is on a course of __________.
  77. #599 A vessel heading SW is on a course of __________.
  78. #600 A vessel heading WNW is on a course of __________.
  79. #601 A vessel heading SE is on a course of __________.
  80. #602 A vessel heading ENE is on a course of __________.
  81. #603 Quadrantal error in a gyrocompass has its GREATEST effect on which of the following?
  82. #604 What is the gyrocompass error resulting from your vessel's movement in OTHER than an east-west direction?
  83. #605 If the gyrocompass error is east, what describes the error and the correction to be made to gyrocompass headings to obtain true headings?
  84. #606 Which statement about gyrocompass error is TRUE?
  85. #607 Which of the following is the most accurate method of determining gyrocompass error while underway?
  86. #609 The spin axis of a gyroscope tends to remain fixed in space in the direction in which it is started. How does this gyroscope become north seeking so t...
  87. #621 Which compensates for induced magnetism in the horizontal soft iron of a vessel?
  88. #624 The vertical component of the Earth's magnetic field causes induced magnetism in vertical soft iron. This changes with latitude. What corrects for thi...
  89. #625 Heeling error is defined as the change of deviation for a heel of __________.
  90. #627 To find a magnetic compass course from a true course you must apply __________.
  91. #630 When adjusting a magnetic compass for error, a deviation table should be made __________.
  92. #631 Deviation which is maximum on intercardinal compass headings may be removed by the __________.
  93. #632 The Flinders bar and the quadrantal spheres should be tested for permanent magnetism at what interval?
  94. #633 The total magnetic effects which cause deviation of a vessel's compass can be broken down into a series of components which are referred to as _______...
  95. #634 Magnetic compass deviation __________.
  96. #635 If the compass heading and the magnetic heading are the same then __________.
  97. #638 Deviation is the angle between the __________.
  98. #639 The horizontal angle between the magnetic meridian and the north-south line of the magnetic compass is __________.
  99. #640 The compass deviation changes as the vessel changes __________.
  100. #641 Deviation is caused by __________.

General Navigation questions: what to expect

Q How many General Navigation questions are in the Deck pool?

There are 2,138 General Navigation questions on this site, every one released by the U.S. Coast Guard or taken from the National Maritime Center's sample examinations, with its correct answer. The exam draws its General Navigation module from the same pool.

Q What score do I need to pass the General Navigation module?

Most USCG exam modules, including General Navigation, require 70 percent to pass. Rules of the Road modules require 90 percent.

Q Are these the real USCG General Navigation exam questions?

Yes. They are the published U.S. Coast Guard questions, matched to the National Maritime Center's 2026 sample examinations. Answer any question to see the correct choice, the USCG reference and the illustration where the question uses one.

Other Deck modules

About the Deck question pool

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.