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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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All Safety questions

Questions 2,201–2,300 of 3,245 · page 23 of 33

  1. #2423 A vessel carries three slack tanks of gasoline (SG .68). The vessel's displacement is 8,000 tons. Each tank is 50 ft. long and 20 ft. wide. What is th...
  2. #2424 A shaft alley divides a vessel's cargo hold into two tanks, each 25 ft. wide by 50 ft. long. Each tank is filled with salt water below the level of th...
  3. #2425 A shaft alley divides a vessel's cargo hold into two tanks, each 20 ft. wide by 60 ft. long. Each tank is filled with saltwater below the level of the...
  4. #2426 On a vessel of 10,000 tons displacement, compute the reduction in metacentric height due to free surface in a hold having free water on tank tops. The...
  5. #2427 On a vessel of 12,000 tons displacement, what is the reduction in metacentric height due to free surface when a tank 60 feet long and 60 feet wide is...
  6. #2428 On a vessel of 6,000 tons displacement there are two slack tanks of carbon tetrachloride (SG 1.6). Each tank is 40 feet long and 25 feet wide. What is...
  7. #2429 On a vessel of 5,000 tons displacement there are two slack tanks of acid (SG 1.8). Each tank is 30 feet long and 20 feet wide. What is the reduction i...
  8. #2430 On a vessel of 9,000 tons displacement there are two slack deep tanks of palm oil (SG .86). Each tank is 40 feet long and 30 feet wide. What is the re...
  9. #2431 On a vessel displacing 8,000 tons, what is the reduction in metacentric height due to free surface when a tank 45 feet long and 45 feet wide is partly...
  10. #2432 On a vessel of 8,000 tons displacement, compute the reduction in metacentric height due to free surface in a hold having free water in the tank tops....
  11. #2433 Your vessel displaces 696 tons and measures 135'L by 34'B. What is the reduction in GM due to free surface if the fish hold (32'L by 29'B by 9'D) is f...
  12. #2434 Your vessel displaces 740 tons and measures 141'L by 34'B. What is the reduction in GM due to free surface if the fish hold (41'L by 30'B by 9'D) is f...
  13. #2435 Your vessel displaces 750 tons and measures 151'L by 35'B. What is the reduction in GM due to free surface if the fish hold (60'L by 31'B by 10'D) is...
  14. #2436 Your vessel displaces 645 tons and measures 132'L by 34'B. What is the reduction in GM due to free surface if the fish hold (30'L by 26'B by 8'D) is f...
  15. #2437 Your vessel displaces 728 tons and measures 138'L by 31'B. What is the reduction in GM due to free surface if the fish hold (36'L by 29'B by 9'D) is f...
  16. #2438 Your vessel displaces 930 tons and measures 156'L by 38'B. What is the reduction in GM due to free surface if the fish hold (46'L by 28'B by 8'D) is f...
  17. #2439 Your vessel displaces 585 tons and measures 128'L by 26'B. What is the reduction in GM due to free surface if the fish hold (30'L by 18'B by 9'D) is f...
  18. #2440 Your vessel displaces 684 tons and measures 132'L by 31'B. What is the reduction in GM due to free surface if the fish hold (32'L by 29'B by 9'D) is f...
  19. #2450 The period of roll is the time difference between __________.
  20. #2451 When the wave period and the apparent rolling period are the same __________.
  21. #2452 You are on a vessel that has a metacentric height of 4 feet, and a beam of 50 feet. What can you expect the rolling period of the vessel to be?
  22. #2453 If your vessel has a GM of one foot and a breadth of 50 feet, what is your vessel's estimated rolling period?
  23. #2454 Your vessel has a metacentric height of 1.12 feet and a beam of 60 feet. What will your average rolling period be?
  24. #2455 You are on a vessel that has a metacentric height of 1.0 foot and a beam of 40 feet. What can you expect the rolling period of the vessel to be?
  25. #2456 Your vessel has a displacement of 19,800 tons. It is 464 feet long, and has a beam of 64 feet. You have timed its rolling period to be 21.0 seconds in...
  26. #2457 You are at sea on a vessel that has a beam of 50 feet, and you calculate the period of roll to be 22 seconds. What is the vessel's metacentric height?
  27. #2458 Your vessel measures 114 feet long by 16 feet in beam. If the natural rolling period at a draft of 5'-06" is 6 seconds, what is the GM?
  28. #2459 Your vessel measures 127 feet long by 17 feet in beam. If the natural rolling period at a draft of 7'-10" is 5 seconds, what is the GM?
  29. #2460 Your vessel measures 131 feet long by 20 feet in beam. If the natural rolling period at a draft of 8'-03" is 6 seconds, what is the GM?
  30. #2461 Your vessel measures 126 feet (38.41 meters) long by 21 feet (6.4 meters) in beam. If the natural rolling period at a draft of 8 feet (2.44 meters) is...
  31. #2462 Your vessel measures 122 feet long by 18 feet in beam. If the natural rolling period at a draft of 6'-09" is 5 seconds, what is the GM?
  32. #2463 Your vessel's has a beam of 60 feet, and you observe a still water rolling period of 25 seconds. What is the vessel's metacentric height?
  33. #2464 Your vessel's has a beam of 40 feet, and you observe a still water rolling period of 20 seconds. What is the vessel's metacentric height?
  34. #2465 You are loading cargo on deck aboard a vessel whose beam is 60 feet and full period of roll is 20 seconds. What is the estimated metacentric height of...
  35. #2466 Your vessel has a displacement of 10,000 tons. It is 350 feet long and has a beam of 55 feet. You have timed its rolling period to be 15.0 seconds. Wh...
  36. #2467 Your vessel has a displacement of 24,500 tons. It is 529 feet long and has a beam of 71 feet. You have timed your vessel's rolling period to be 25.0 s...
  37. #2468 Your vessel measures 125 feet long by 17 feet in beam. If the natural rolling period at a draft of 7'-09" is 6 seconds, what is the GM?
  38. #2469 Your vessel measures 128 feet long by 21 feet in beam. If the natural rolling period at a draft of 7'-06" is 6 seconds, what is the GM?
  39. #2470 Your vessel measures 119 feet long by 17 feet in beam. If the natural rolling period at a draft of 5'-05" is 6 seconds, what is the GM?
  40. #2471 You have approximately 6 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical d...
  41. #2472 You have approximately 15 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  42. #2473 You have approximately 29 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  43. #2474 You have approximately 60 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  44. #2475 You have approximately 16 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  45. #2476 You have approximately 24 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  46. #2477 You have approximately 34 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  47. #2478 You have approximately 14 tons of fish on deck. What will be the shift in the center of gravity after you shift the fish to the fish hold, a vertical...
  48. #2479 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0071 below. Use the white pages of The Stability Data Reference Book to deter...
  49. #2480 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0046 below. Use the white pages of The Stability Data Reference Book to deter...
  50. #2481 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0080 below. Use the white pages of The Stability Data Reference Book to deter...
  51. #2482 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0065 below. Use the white pages of The Stability Data Reference Book to deter...
  52. #2483 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0139 below. Use the white pages of The Stability Data Reference Book to deter...
  53. #2484 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0078 below. Use the white pages of The Stability Data Reference Book to deter...
  54. #2485 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0074 below. Use the white pages of The Stability Data Reference Book to deter...
  55. #2486 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0069 below. Use the white pages of The Stability Data Reference Book to deter...
  56. #2487 The SS AMERICAN MARINER is ready to sail with the load shown in table ST-0068 below. Use the white pages of The Stability Data Reference Book to deter...
  57. #2507 You are on a Mariner class cargo vessel. Your drafts are: FWD 17'-04", AFT 19'-04". You wish to increase the calculated GM of 3.0' to 4.2'. What tanks...
  58. #2508 You are on a Mariner class cargo vessel. Your drafts are: FWD 26'-06", AFT 28'-02". You wish to increase the calculated GM of 2.7' to 2.9'. What tanks...
  59. #2509 You are on a Mariner class cargo vessel. Your drafts are: FWD 21'-04", AFT 23'-04". You wish to increase the calculated GM of 4.8' to 5.8'. What tanks...
  60. #2510 You are on a Mariner class cargo vessel. Your drafts are: FWD 22'-06", AFT 25'-06". You wish to increase the calculated GM of 4.8' to 5.9'. What tanks...
  61. #2511 You are on a Mariner class cargo vessel. Your drafts are: FWD 24'-00", AFT 25'-08". You wish to increase the calculated GM of 3.0' to 4.1'. What tanks...
  62. #2512 The SS AMERICAN MARINER is partially loaded with a GM of 2.9 feet and drafts of: FWD 17'-10", AFT 19'-04". Use the white pages of the Stability Data R...
  63. #2513 The SS AMERICAN MARINER is partially loaded with a GM of 3.1 feet and drafts of: FWD 19'-06", AFT 21'-04". Use the white pages of the Stability Data R...
  64. #2514 The SS AMERICAN MARINER is partially loaded with a GM of 3.1 feet and drafts of: FWD 16'-00", AFT 18'-04". Use the white pages of the Stability Data R...
  65. #2515 The SS AMERICAN MARINER is partially loaded with a GM of 2.6 feet and drafts of: FWD 13'-07", AFT 15'-01". Use the white pages of the Stability Data R...
  66. #2516 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0126 below. Use the white pages of The Stability Data Reference Book to determine t...
  67. #2517 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0141 below. Use the white pages of The Stability Data Reference Book to determine t...
  68. #2522 The SS AMERICAN MARINER has the following drafts: FWD 09'-00", AFT 15'-11". Upon completion of loading and bunkering the items shown in table ST-0014...
  69. #2523 The SS AMERICAN MARINER has the following drafts: FWD 09'-00", AFT 15'-11". Upon completion of loading and bunkering the items shown in table ST-0023...
  70. #2524 The SS AMERICAN MARINER has the following drafts: FWD 09'-00", AFT 15'-11". Upon completion of loading and bunkering the items shown in table ST-0029...
  71. #2525 The SS AMERICAN MARINER has the following drafts: FWD 09'-00", AFT 15'-11". Upon completion of loading and bunkering the items shown in table ST-0032...
  72. #2526 The SS AMERICAN MARINER has the following drafts: FWD 09'-00", AFT 15'-11". Upon completion of loading and bunkering the items shown in table ST-0034...
  73. #2527 The SS AMERICAN MARINER has the following drafts: FWD 08'-04", AFT 16'-08". Upon completion of loading and bunkering the items shown in table ST-0037...
  74. #2528 The SS AMERICAN MARINER has the following drafts: FWD 09'-10", AFT 15'-08". Upon completion of loading and bunkering the items shown in table ST-0041...
  75. #2529 The SS AMERICAN MARINER has the following drafts: FWD 10'-04", AFT 14'-08". Upon completion of loading and bunkering the items shown in table ST-0045...
  76. #2530 The SS AMERICAN MARINER has the following drafts: FWD 8'-04", AFT 15'-08". Upon completion of loading and bunkering the items shown in table ST-0047 b...
  77. #2535 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0146 below. Use the white pages of The Stability Data Reference Book to determine t...
  78. #2536 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0143 below. Use the white pages of The Stability Data Reference Book to determine t...
  79. #2537 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0048 below. Use the white pages of The Stability Data Reference Book to determine t...
  80. #2538 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0049 below. Use the white pages of The Stability Data Reference Book to determine t...
  81. #2539 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0051 below. Use the white pages of The Stability Data Reference Book to determine t...
  82. #2540 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0053 below. Use the white pages of The Stability Data Reference Book to determine t...
  83. #2541 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0058 below. Use the white pages of The Stability Data Reference Book to determine t...
  84. #2542 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0062 below. Use the white pages of The Stability Data Reference Book to determine t...
  85. #2543 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0066 below. Use the white pages of The Stability Data Reference Book to determine t...
  86. #2544 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0070 below. Use the white pages of The Stability Data Reference Book to determine t...
  87. #2545 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0073 below. Use the white pages of The Stability Data Reference Book to determine t...
  88. #2546 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0076 below. Use the white pages of The Stability Data Reference Book to determine t...
  89. #2547 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0128 below. Use the white pages of The Stability Data Reference Book to determine t...
  90. #2548 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0124 below. Use the white pages of The Stability Data Reference Book to determine t...
  91. #2549 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0001 below. Use the white pages of The Stability Data Reference Book to determine t...
  92. #2550 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0005 below. Use the white pages of The Stability Data Reference Book to determine t...
  93. #2551 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0010 below. Use the white pages of The Stability Data Reference Book to determine t...
  94. #2552 The SS AMERICAN MARINER is loaded with the cargo shown in table ST-0011 below. Use the white pages of The Stability Data Reference Book to determine t...
  95. #2553 Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 23.1 feet. Use the selected stability curves in the blue pages of the Stability Data...
  96. #2554 The sailing drafts are: FWD 25'-03", AFT 26'-03" and the GM is 3.5 feet. Use the information in Section 1, the blue pages, of the Stability Data Refer...
  97. #2555 The sailing drafts are: FWD 22'-06", AFT 23'-06" and the GM is 3.3 feet. Use the information in Section 1, the blue pages, of the Stability Data Refer...
  98. #2556 Your vessel's drafts are: FWD 27'-06", AFT 28'-02"; and the KG is 21.3 feet. Use the selected stability curves in the blue pages of the Stability Data...
  99. #2557 The sailing drafts are: FWD 22'-08", AFT 23'-04" and the GM is 4.6 feet. Use the information in Section 1, the blue pages, of the Stability Data Refer...
  100. #2558 The sailing drafts are: FWD 24'-03", AFT 25'-03" and the GM is 5.5 feet. Use the information in Section 1, the blue pages of the Stability Data Refere...

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.

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.