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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.

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All General Navigation questions

Questions 2,101–2,138 of 2,138 · page 22 of 22

  1. #2306 What is the reaction of a gyrocompass to an applied force known as?
  2. #2307 Which of the following describes the directive force of a gyrocompass?
  3. #2308 What is a system of reservoirs and connecting tubes in a gyro compass called?
  4. #2309 By what means are indications of the master gyrocompass sent to remote repeaters?
  5. #2310 Which of the following describes gyrocompass repeaters which reproduce the indications of the master gyrocompass?
  6. #2311 Which of the following may introduce error into a magnetic compass?
  7. #2312 Which of the following should be done when crossing the magnetic equator?
  8. #2313 What are the quadrantal spheres used for?
  9. #2314 What do the soft iron spheres mounted on arms on the binnacle compensate for?
  10. #2315 Variation is the angular measurement between what two points?
  11. #2316 Which of the following compensates for errors introduced when a vessel heels over?
  12. #2317 Which of the following describes the difference between true heading and magnetic heading?
  13. #2318 What does the Flinders bar on a magnetic compass compensates for?
  14. #2319 What does a single vertical magnet placed underneath the compass in the binnacle compensate for?
  15. #2320 Which of the following describes the principal purpose of magnetic compass adjustment?
  16. #2321 If the magnetic heading is greater than the compass heading, what direction is the deviation?
  17. #2322 What is the difference between magnetic heading and compass heading called?
  18. #2323 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
  19. #2324 How many characters does the short text messaging feature of the automatic identification system (AIS) allows for?
  20. #2325 What is the typical operating range of Automatic Identification Systems (AIS) at sea?
  21. #2326 On which of the following does an automatic identification system (AIS) transponder transmit and receive information?
  22. #2327 Which two channels does an automatic identification system (AIS) transponder use to transmit and receive information broadcasts?
  23. #2328 Automatic identification systems (AIS) are required to do which of the following?
  24. #2329 When using GPS, how many theoretical position lines are required for a two-dimensional fix?
  25. #2330 Your radar is set on a true motion display. Which of the following will appear to move across the PPI scope?
  26. #2331 Which of the following is a standard correction applied to the reading of an aneroid barometer?
  27. #2332 Which type of fog occurs on clear nights with very light breezes and forms when the earth cools rapidly?
  28. #2333 Which publication(s) must a towing vessel of 12 meters or more in length carry when operating on US waters other than the Western Rivers?
  29. #2334 You are inbound in a channel marked by a range. The range line is 216° T. You are steering 213° T and have the range in sight as shown in illu... illustration
  30. #2335 You are inbound in a channel marked by a range. The range line is 040° T. You are steering 036°T. The range is in sight as shown in illustrati... illustration
  31. #2336 A vessel crossing a river on the Western Rivers, must keep out of the way of a power-driven vessel __________.
  32. #2337 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... illustration
  33. #2338 On which route is a towing vessel over 39.4 feet in length NOT required to carry an echo-sounding device?
  34. #2339 Which of the following is the reference point to measure an azimuth angle for a body?
  35. #2340 Which instrument may a towing vessel, engaged in towing exclusively on the Western Rivers, use in place of a magnetic compass?
  36. #2341 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...
  37. #2342 You are inbound in a channel marked by a range. The range line is 133° T. You are steering 129° T and have the range in sight as shown in illu... illustration
  38. #2343 A backlash below a lock is defined as __________.

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.

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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.