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Deck · 5,775 questions

Deck General - USCG Exam Questions

Seamanship in the broad sense: marlinespike, ground tackle and anchoring, mooring and towing, weather, stability basics, and day-to-day vessel operations.

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 Deck General questions

Questions 1,401–1,500 of 5,775 · page 15 of 58

  1. #1506 Protective clothing must be worn while sampling hazardous cargo on a tankship. This clothing includes which of the following at a minimum?
  2. #1507 What are the flammable limits for motor gasoline?
  3. #1508 With reference to Liquefied Gas operations, what does the term "rollover" used to describe?
  4. #1510 What are the primary concern(s) for safely transporting and handling Liquefied Gas?
  5. #1511 Which of the following actions is not considered to have the potential for generating static electricity?
  6. #1512 What is the minimum temperature required to ignite gas or vapor without a spark or flame being present called?
  7. #1513 Where would be the most likely location for a liquid cargo fire to occur on a tanker?
  8. #1514 Which of the following is the chief source of spontaneous combustion aboard tankers?
  9. #1515 U.S. regulations require that tank vessels handling grade B liquids shall have their cargo pumps separated from all sources of vapor ignition by which...
  10. #1516 What is the best method for extinguishing a fire of escaping liquefied flammable gas?
  11. #1517 What is the primary hazard of liquefied petroleum gas and liquefied natural gas?
  12. #1518 Which of the following conditions will cause a combustible gas indicator to become inoperative or give erroneous readings?
  13. #1519 Before a tank is to be crude oil washed, what position must the oxygen content in the tank must be measured at?
  14. #1520 Span gas is used for what process?
  15. #1521 What is span gas is used for aboard liquefied natural gas carriers?
  16. #1522 The condition of asphyxia arises from which of the following?
  17. #1523 Compared to air, the weight of liquefied petroleum gas vapors are which of the following?
  18. #1524 What would likely happen if you were exposed to a 100% methane atmosphere for more than 15 minutes?
  19. #1525 When providing first aid to a victim of gas poisoning, what is the MOST important symptom to check for?
  20. #1526 Cryogenic burns can result in frostbite, what is the proper immediate treatment?
  21. #1527 What is the proper first aid for LPG in the eye?
  22. #1528 In special cases, the Commandant of the Coast Guard may permit cargo piping to pass through machinery spaces. This is permitted provided that the only...
  23. #1529 Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. What action should you take to obtain an even keel...
  24. #1530 46 CFR directs the location of fuel oil sounding tubes and access openings for fuel oil tanks on cargo vessels. Where can the tubes be located?
  25. #1531 Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern. Which of the following action would reduce the exc...
  26. #1532 What are flame screens used for?
  27. #1533 What is a cofferdam?
  28. #1534 What type of valve is usually on the discharge side of a cargo pump on a tank vessel?
  29. #1535 On tankers with manually operated tank valves, which of the following is the type of valve most commonly used?
  30. #1536 The pipe used to connect two separate piping systems on a tank vessel is known as a __________.
  31. #1537 Before a tank is to be crude oil washed, the oxygen content in the tank must be measured at a position __________.
  32. #1539 The normal equipment of every rescue boat shall include __________.
  33. #1540 Using a safety factor of five, determine the safe working load of a line with a breaking strain of 20,000 pounds.
  34. #1541 Which type of stopper should be used to stop off wire rope?
  35. #1543 Which type of ventilation is required for enclosed spaces containing gasoline, machinery, or fuel tanks? (small passenger vessel regulations)
  36. #1545 To prevent damage by and to storage batteries aboard small passenger vessels they should be located __________.
  37. #1546 Which knot shown in illustration D030DG below is a French bowline? illustration
  38. #1547 What is a grapnel?
  39. #1548 A "skiff hook" is a device used to do which of the following?
  40. #1549 The life jackets on all vessels shall be __________.
  41. #1550 The life jackets on all vessels shall be __________.
  42. #1551 A block and tackle is "rove to advantage". This means that the __________.
  43. #1552 The normal equipment of every rescue boat shall include __________.
  44. #1553 When securing a hook to the end of a wire rope you should use __________.
  45. #1554 Gasoline fuel tanks on small passenger vessels must be installed __________.
  46. #1555 The inspection of a 50 ft. vessel of 65 gross tons carrying more than twelve passengers on an international voyage is required by the Coast Guard once...
  47. #1556 Instead of whipping an end of a line, a temporary means of preventing the line from unraveling is to tie a __________.
  48. #1557 On small passenger vessels, outlets in fuel lines are permitted __________.
  49. #1558 You are using tackle number 12 as shown in illustration D029DG below to lift a weight. The hauling part of this tackle is bent to the weight hook (w)... illustration
  50. #1559 On small passenger vessels which type of internal combustion engine carburetor does not require a drip collector?
  51. #1560 If a vessel is not equipped with an automatically-activated emergency lighting system, the vessel must be __________. (small passenger vessel regulati...
  52. #1561 Which knot in illustration D030DG below is secure only when there is a strain on the line? illustration
  53. #1562 When you "end for end" a wire rope, you __________.
  54. #1563 If given equal care, nylon line should last how many times longer than manila line?
  55. #1564 Coast Guard approved buoyant work vests __________.
  56. #1565 An example of a messenger is a __________.
  57. #1566 Hand tillers are only accepted as an auxiliary means of steering if __________.
  58. #1567 Fixed carbon dioxide fire extinguishing systems shall be installed to protect enclosed machinery and fuel tank spaces of all vessels using gasoline or...
  59. #1568 What is the knot at the end of the heaving line used to pass the towing hawser called?
  60. #1569 Which knot in illustration D030DG below represents a double blackwall hitch? illustration
  61. #1570 The Master of a small passenger vessel fitted with loading doors must ensure that the doors are closed, watertight and secured __________.
  62. #1571 The Master or person-in-charge of an OSV shall insure that each deck from which rescue boats are launched is __________.
  63. #1572 Regulations require that OSV's under 100 GT must have a steering system that is capable of moving the rudder __________.
  64. #1573 A piece of small stuff (small line) secured to an object to prevent it from going adrift is a __________.
  65. #1574 What is meant by the term "two-blocked"?
  66. #1575 As Master of an inspected small passenger vessel, you have a question regarding a proposed modification to a watertight bulkhead. In which subchapter...
  67. #1576 Which letter shown in illustration D030DG below represents a clove hitch? illustration
  68. #1577 What type of knot in illustration D030DG below is indicated by the Letter "P"? illustration
  69. #1578 Which knot shown in illustration D030DG below represents a square knot? illustration
  70. #1579 Each OSV must carry __________.
  71. #1580 On small passenger vessels, which device(s) must be fitted to a fuel line's tank connection?
  72. #1581 On board small passenger vessels, how often shall the Master test the steering gear?
  73. #1582 Which is normally used to hold wire rope for splicing?
  74. #1583 On small passenger vessels bunks installed in overnight passenger accommodation spaces __________.
  75. #1586 The light on a personal flotation device on an OSV must be replaced __________.
  76. #1587 A "T-Boat" accident resulting in loss of life, serious injury or more than $25,000 property damage must be reported to __________.
  77. #1588 Small passenger vessels in coastwise service must carry approved __________.
  78. #1589 The instructions for rescue boats and liferafts on an OSV must be approved by the __________.
  79. #1591 In the manufacture of line, plant fibers are twisted together to form __________.
  80. #1592 Which knot in illustration D030DG below represents a timber hitch? illustration
  81. #1593 Painters fitted to life floats and buoyant apparatus with a capacity of 49 or less persons must __________.
  82. #1594 What should be readily available on deck while seamen are working over the side on a stage?
  83. #1595 How much force would be required to lift a weight of 200 lbs. using a gun tackle rigged to disadvantage (do not consider friction)?
  84. #1596 A block that can be opened at the hook or shackle end to receive a bight of the line is a __________.
  85. #1597 Chafing gear is normally used __________.
  86. #1598 Each buoyant work vest on an OSV must be __________.
  87. #1599 The patrolman, while on duty on a passenger vessel, must have in his possession a(n) __________.
  88. #1600 The Emergency Position Indicating Radio beacon on an OSV vessel must be stowed __________.
  89. #1601 The painter on a life float or buoyant apparatus shall __________.
  90. #1602 "White Line" is made from __________.
  91. #1603 The main advantage of a Chinese stopper over the one line stopper is that it __________.
  92. #1604 What is the minimum height of rails on passenger decks of ferryboats, excursion vessels, and vessels of a similar type? (small passenger vessel regula...
  93. #1605 How many ring life buoys must a small passenger vessel, of less than 65 feet in length, carry?
  94. #1606 What is the mechanical advantage of tackle number 2 as shownin illustration D029DG below? illustration
  95. #1607 A natural fiber rope can be ruined by dampness because it may __________.
  96. #1608 The rescue boat on an OSV is not required to carry a __________.
  97. #1609 A small passenger vessel of not more than 65 feet in length must have a collision bulkhead if it __________.
  98. #1610 The knot used to form the bridle at the standing part of a gantline rigged to a stage is a __________.
  99. #1611 The person-in-charge shall insure that each rescue boat on an OSV is lowered to the water, launched and operated at least once every __________.
  100. #1612 On an OSV, how many ring buoys are required to have a buoyant line attached?

Deck General questions: what to expect

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

There are 5,775 Deck General 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 Deck General module from the same pool.

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

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

Q Are these the real USCG Deck General 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.