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Deck · 3,245 questions

Safety - USCG Exam Questions

Firefighting, lifesaving appliances and survival craft, emergency procedures, first aid, and pollution prevention regulations.

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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Questions 3,001–3,100 of 3,245 · page 31 of 33

  1. #3515 What does the term "beam of a vessel" refer to?
  2. #3516 How can the accumulation of dangerous fumes generated by the storage batteries be prevented?
  3. #3517 How can the spread of fire be prevented?
  4. #3518 What is the main advantage of a steady stream of water on a class "A" fire?
  5. #3519 Which class of fire is an oil fire classified?
  6. #3520 When is firefighting foam most effective?
  7. #3521 How does good housekeeping prevent fires on a vessel?
  8. #3522 Which color of rockets, shells, or rocket parachute flares are used to indicate that the vessel is in distress and requires immediate assistance?
  9. #3523 Which is TRUE concerning the stowage of life jackets?
  10. #3524 Which is TRUE concerning fixed ballast, on small passenger vessels?
  11. #3525 When must a small passenger vessel of not more than 65 feet in length have a collision bulkhead?
  12. #3526 Which statement is TRUE concerning penetrations and openings in watertight bulkheads in a small passenger vessel less than 100 gross tons?
  13. #3527 What do regulations require of approved buoyant work vests? (small passenger vessel regulations)
  14. #3528 Vessels in ocean service shall carry which item? (small passenger vessel regulations)
  15. #3529 Your vessel has a gasoline engine and a mechanical exhaust ventilation system. BEFORE starting the engine. How long do regulations require the exhaust...
  16. #3530 Which is a requirement for electrical wiring on all "T-Boats"?
  17. #3531 What is the purpose of rigging frapping lines on lifeboat falls?
  18. #3532 An immersion suit must be equipped with which item(s)?
  19. #3533 Heave is motion along which axis?
  20. #3534 Normally, your vessel is on a voyage for a three-month duration. How many sanitary inspections are required to be conducted during the voyage?
  21. #3535 Which is TRUE of the term negative slip on a vessel?
  22. #3536 Which type of portable fire extinguisher is NOT designed for use on flammable liquid fires?
  23. #3537 Which is the best method of extinguishing a class A fire?
  24. #3538 What will happen if cargo is shifted from the lower hold to the main deck on the vessel?
  25. #3539 Your vessel has an injured crew member onboard that will require evacuation. Which of the following publications should you review for the procedures...
  26. #3540 What is the result of a vertical shift of weight to a position above the vessel's center of gravity?
  27. #3541 Which defines the "flammable limits" of an atmosphere?
  28. #3542 Which is a major advantage of the round turn maneuver in a man overboard situation?
  29. #3543 When is it recommended that seawater be used for drinking?
  30. #3544 Which is TRUE of a combination or all-purpose nozzle?
  31. #3545 When flammable liquids are handled in a compartment on a vessel, which is TRUE concerning the ventilation for that area?
  32. #3546 Which is the national distress, safety, and calling frequency channel?
  33. #3547 Which term defines the lowest temperature required to cause self-sustained combustion of a substance independent of any outside source of ignition?
  34. #3548 When a ship is abandoned and there are several liferafts in the water, which task must be done to aid in your rescue?
  35. #3549 What is the signal given to commence lowering the lifeboats?
  36. #3550 A yellow signal, floating in the air from a parachute, about 300 feet above the water, indicates what about a submarine?
  37. #3551 To launch a liferaft by hand, you should take which actions?
  38. #3552 In the illustration, which item number correctly identifies the external lifelines? illustration
  39. #3553 What happens when the handle of an all-purpose nozzle is pushed into the forward position?
  40. #3554 In the illustration, what is the plating indicated by the letter "N" known as? illustration
  41. #3555 What does subtracting GM from KM yield?
  42. #3556 Where must the life jackets be stowed?
  43. #3557 If you have a fire in the engine room, what is the FIRST action you should take?
  44. #3558 Which type of davit requires you to turn a crank in order to swing the lifeboat out over the ship's side?
  45. #3559 Several merchant ships are arriving at the scene of a distress incident. One of them must assume the duties of the On-Scene Coordinator. Which of the...
  46. #3560 After having activated the emergency position indicating radio beacon, which is the appropriate action to take?
  47. #3561 How can you indicate that your vessel is in distress?
  48. #3562 Which term indicates how many tons of cargo a vessel can carry?
  49. #3563 What is the flammable limit range of petroleum vapors mixed with air?
  50. #3564 A burning pile of canvas is which classification of fire?
  51. #3565 Which is TRUE if passengers are on board when an abandon ship drill is carried out?
  52. #3566 Which is a symptom of traumatic shock?
  53. #3567 Which is TRUE of paints and solvents on a vessel?
  54. #3568 Overhauling a fire in the living quarters on a vessel must include which action?
  55. #3569 You have 400 tons of below deck tonnage and 100 tons of above deck cargo on board. You must load 160 tons of liquid mud below deck. How much more deck... illustration
  56. #3570 Your sailing drafts are: FWD 19'-06", AFT 20'-10" and the GM is 3.3 feet. What will be the angle of list if the #2 starboard deep tank (capacity 100 t...
  57. #3571 You are on a supply run to an offshore drilling rig. You are carrying the load show in the table. What is the height above the main deck of the center...
  58. #3572 Utilizing the illustration of the fire control plan of the lower engine room, what does the arrow between frames 135 and 140 represent? illustration
  59. #3573 In heavy seas, how should the helmsman steer the lifeboat?
  60. #3574 You are at sea and have received a General Emergency message announcing the outbreak of war in Europe. You are directed to comply with the instruction...
  61. #3575 Which is one of the limitations of foam as an extinguishing agent?
  62. #3576 When using the term "limber system" one is referring to which system?
  63. #3577 What must be accurately determined to assess the potential for progressive flooding after a vessel has been damaged?
  64. #3578 Which is TRUE concerning the production of mechanical foam by a portable in-line foam proportioner?
  65. #3579 Which is TRUE concerning the painter of an inflatable liferaft?
  66. #3580 After launching, how can the inside of an inflatable raft be kept dry?
  67. #3581 Life jackets should be marked with which item?
  68. #3582 If heavy smoke is coming from the paint locker, what should be the FIRST firefighting response?
  69. #3583 Which is the prime function of the bilge keel?
  70. #3584 In the illustration, which Fire Control Plan symbol represents a heat detector? illustration
  71. #3585 You are reading the draft marks as shown in the illustration. The water level is about 4 inches below the bottom of the number 11. What is the draft? illustration
  72. #3586 What is the weight of the liquid displaced by a vessel floating in sea water equal to?
  73. #3587 Portable foam fire-extinguishers are designed for use on which class of fires?
  74. #3588 What is the name given to the strake on each side of the keel?
  75. #3589 By day, what is the signal meaning, "This is the best place to land"?
  76. #3590 After an engine is started which is the best action(s) to take?
  77. #3591 The midships house of your cargo vessel is constructed with an interior stair tower from the main deck to the bridge. Under what circumstances may the...
  78. #3592 Blocks and falls used as lifeboat gear must be designed with which minimum safety factor?
  79. #3593 If a powdered aluminum fire is being fought, which is the most effective extinguishing agent to use?
  80. #3594 One of your crew members falls overboard from the starboard side. You should IMMEDIATELY take which action?
  81. #3595 Which is the required amount of water for each person in a lifeboat on an oceangoing vessel, on an international voyage?
  82. #3596 How is the inside light in an inflatable liferaft activated?
  83. #3597 Why should all electrical appliances aboard a vessel be grounded and ground fault protected?
  84. #3598 What is the primary advantage of using a sea anchor with the survival craft?
  85. #3599 Which is the flammable limit range of Diesel Oil mixed with air?
  86. #3600 What is the required minimum length of the painter for a lifeboat in ocean service?
  87. #3601 In the illustration, which item number correctly identifies the external recognition light, which can be seen up to two miles? illustration
  88. #3602 A vessel behaves as if all of its weight is acting downward through the center of gravity, and all its support is acting upward through which point?
  89. #3603 Which signaling device(s) is/are required on inflatable liferafts?
  90. #3604 In the illustration, what is the strake of shell plating indicated by letter "H" known as? illustration
  91. #3605 Which is TRUE when making a Scharnow turn?
  92. #3606 How is the "off-load" release system on a survival craft designed to be activated?
  93. #3607 What is the chemical reaction process involving Class K portable fire extinguisher agents known as?
  94. #3608 What can blocking open or removing fire dampers in your vessel's ventilation system cause?
  95. #3609 After using a CO2 portable extinguisher, which action should be taken?
  96. #3610 In the illustration, what number is the sea painter? illustration
  97. #3611 You are picking up a conscious person that has fallen overboard in one of the vessels motorboats. Recovery is easier in a light breeze if you approach...
  98. #3612 Which maneuver will return your vessel to a person who has fallen overboard in the shortest time?
  99. #3613 What is the thickness of a 30.6 pound plate?
  100. #3614 Which statement is TRUE concerning distress signals in a lifeboat?

Safety questions: what to expect

Q How many Safety questions are in the Deck pool?

There are 3,245 Safety 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 Safety module from the same pool.

Q What score do I need to pass the Safety module?

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

Q Are these the real USCG Safety 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.