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Engine · 1,109 questions

Engineering Safety - USCG Exam Questions

Engine room safety: firefighting and fire prevention, confined space entry, pollution regulations, and safe work practices.

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 Engineering Safety questions

Questions 501–600 of 1,109 · page 6 of 12

  1. #677 When required to work in an area where explosive gases may accumulate, you should use hand tools which are __________. -
  2. #678 A simple precaution to reduce the possibility of accidental fires in the paint locker is to __________.
  3. #679 Good housekeeping on a vessel prevents fires by __________.
  4. #680 The most likely location for a liquid cargo fire to occur on a tanker would be __________.
  5. #681 In accordance with 46 CFR Part 109, the Muster List ("Station Bill") shows each crew lifeboat station, their duties during abandonment, basic instruct...
  6. #683 As Chief Engineer, you are discussing with a new Third Engineer the methods of fighting an engine room fire. You ask the junior engineer to explain ho...
  7. #684 As Chief Engineer, you are discussing fire safety with a new unlicensed crew member. What would you expect the crew member to know having been onboard...
  8. #685 Your ship is leaving port after almost a complete crew change out. The captain has ordered a fire drill simulating a fire in the engine room with full...
  9. #688 In a typical automatic fire alarm system, all zone circuits are always connected __________.
  10. #692 During repairs it is necessary to replace an existing vessel bulkhead. Drawings indicate it is a "B" class bulkhead. This indicates which of the follo...
  11. #694 Drawings of your ship indicate the use of "B" class bulkheads. The "B" indicates which of the following?
  12. #696 One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space is __________.
  13. #697 When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent __________.
  14. #699 The most common cooling agent used for fighting fires on tank vessels is __________.
  15. #700 Which extinguishing agent is the best for use on electrical fires?
  16. #703 Which portable fire extinguisher is normally recharged in a shore facility?
  17. #705 During an inspection of a ships storeroom, you find sealed containers of chemicals labeled "potassium bicarbonate" and "potassium chloride". These che...
  18. #706 To activate a foam type portable fire extinguisher, you must __________.
  19. #707 The passive safety device installed on each Halon fire extinguishing cylinder, to prevent its over pressurization is called a __________.
  20. #708 Which of the listed characteristics applies to a semi-portable CO2 system?
  21. #710 Properly stowed fire hose is either faked or rolled into a rack with the __________.
  22. #711 There is always a lower water pressure at the fire hose outlet than is found at the discharge of the pump. Which of the following reasons is the commo...
  23. #712 The physical difference of the water spray patterns developed by the high velocity tip and low velocity applicator is due to __________.
  24. #714 Water applied as a 'fog' can be more effective than water applied as a 'solid stream', because __________.
  25. #715 Actuating the fixed CO2 system should cause the automatic shutdown of the __________.
  26. #718 The primary function of an automatic sprinkler system is to __________.
  27. #720 In discussing with a new junior officer the provisions aboard the vessel for shore side firefighters to connect into the vessel's fire main, what item...
  28. #721 You are the engineer on a vessel of more than 1600 gross tons with a periodically unattended machinery space. A fire has been reported in the engine r...
  29. #724 While in the engine control room you smell smoke and see it coming from the vent in the main switchboard panel. Which of the many different types of e...
  30. #725 An oil fire is reported in the purifier room bilge. How would you combat this fire?
  31. #726 When combating a major electrical fire at sea, the main consideration is __________.
  32. #728 If a fire occurs in an electric cable, in which the inner layers of insulation, or the insulation covered by armor is burning, you should __________.
  33. #729 In fighting a fire in a fuel tank, the FIRST action you should attempt is to __________.
  34. #730 The longer an oil fire is permitted to burn, the __________.
  35. #731 As an engineer on a tanker of more than 1600 gross tons on an international voyage, how would you direct the fire team to combat a large cargo space f...
  36. #732 When fighting a liquefied natural gas fire, you should __________.
  37. #735 One of the main concerns when fighting a galley fire is __________.
  38. #736 In the event of an exhaust duct fire, most dry chemical and carbon dioxide galley range fixed extinguishing systems are automatically activated throug...
  39. #739 As First Engineer you are the senior engineering officer in Emergency Squad #1. The fire alarm sounds and you report to the muster station where the B...
  40. #751 The explosive range of methane is 5% to 15% by volume in air. This means a vapor/air mixture of __________.
  41. #755 Bunker "C" is classified as a grade __________.
  42. #756 Which of the following is classified as a grade "E" combustible liquid?
  43. #757 Which of the petroleum products listed has a flash point below 150°F?
  44. #758 If diesel fuel vapors in a compartment are considered to be within the flammable range __________.
  45. #759 Which of the listed pumping arrangements will be hazardous when two similar centrifugal pumps are used to discharge a cargo of flammable liquid?
  46. #761 Petroleum vapors are dangerous __________.
  47. #762 Which of the following precautions are necessary when using any electrical equipment in a hazardous location, such as a cargo pump room?
  48. #764 Span gas is used aboard liquefied natural gas carriers to __________.
  49. #765 When pumping sour crude, which gas should be tested for prior to entering the cargo pump room to repair a leaking pump?
  50. #766 If a cargo tank has not been certified as gas free, __________.
  51. #768 The atmosphere of an empty fuel tank is tested and designated "gas free". Which of the following statements is correct concerning this tank?
  52. #769 A fuel tank on a barge has been certified by a marine chemist as being "Safe for Men" and "Safe for fire." This condition may change if___________.
  53. #770 A fuel tank is considered to be gas free when the tank is __________.
  54. #771 A health hazard term listed on a Material Safety Data Sheet (MSDS) that indicates allergic-like reaction in some people after repeated exposure is ___...
  55. #772 The physical data term on a Material Safety Data Sheet (MSDS) describing whether a liquid is lighter or heavier than water is __________.
  56. #775 The physical data term on a Material Safety Data Sheet (MSDS) that indicates if the vapor formed by a material is lighter or heavier than air is calle...
  57. #776 The Oil Record Book must be maintained onboard the vessel for __________.
  58. #778 The sections of an Oil Record Book preceding the log pages contain a __________.
  59. #780 With regards to a ship's Oil Record Book, an oil tanker of 150 gross tons and above must maintain entries in ________.
  60. #781 When making entries in the Oil Record Book, all quantities should be __________.
  61. #782 During fueling operations oil is detected in the water adjacent to your vessel. If however, it is determined to be from some source other than your ve...
  62. #786 If the overflow tank high-level alarm sounds while the fuel oil tanks are being topped off, the engineer should __________.
  63. #788 Coast Guard regulations require a shipboard oil pollution emergency plan to be reviewed __________.
  64. #789 When amendments are made to the shipboard oil pollution emergency plan, all revisions must be submitted to the Coast Guard __________.
  65. #790 In accordance with domestic regulations, which of the following statements is true regarding U.S. flag vessel response plans for the carriage of oil?
  66. #791 Which of the following statements are true regarding U.S. flag vessel response plans for the carriage of oil?
  67. #792 In cleaning up an oil spill, the use of chemical agents would __________.
  68. #793 Victual waste is __________.
  69. #794 When dumping garbage into the sea, other than special areas, __________.
  70. #795 The amount of garbage disposed must be entered into the records maintained by each ship and stated in __________.
  71. #798 In order to prevent the unnecessary release of hydrocarbons to atmosphere, when taking on departure ballast, one method used is to _________.
  72. #799 When discharging clean ballast, prior to entering the loading port, if the ballast is determined by the oil monitor to exceed 15 parts per million of...
  73. #800 A segregated ballast system is a system where __________.
  74. #801 What would be the minimum distance from any shoreline that a vessel must be located before it is permitted to perform a complete ballast water exchang...
  75. #803 A gurgling noise is heard from within a cargo tank when discharging cargo, this would indicate that the __________.
  76. #806 Pressure-vacuum relief valves on tank vessel cargo tanks should be kept in good working order to prevent __________.
  77. #808 Tank stripping is accomplished more effectively by using a __________.
  78. #809 In order for you to operate your vessel's crude oil wash system, the cargo tanks to be washed must be __________.
  79. #810 Both crude oil washing and water washing use direct impingement to remove residue from tanks. Crude oil washing has an additional advantage, in utiliz...
  80. #811 Bottom mounted crude oil washing machines are primarily used for _________.
  81. #812 When tanks have been washed with crude oil, and ballasted without being water rinsed, the ballast is referred to as _________.
  82. #813 Crude oil washing has which of the following disadvantages?
  83. #814 On a tanker vessel, what is the required combined capacity of the inert gas generating system as compared to the total capacity of all the cargo pumps...
  84. #816 Which of the following methods is used to supply inert gas from a flue gas system to the cargo tanks?
  85. #818 The primary function of a "flue gas type" inert gas system is to _________.
  86. #819 Which of the following conditions will result in an automatic shut down of the flue gas inert gas system?
  87. #820 When securing the operation of an inert gas system, the final step should be _________.
  88. #822 As Chief Engineer or First Assistant Engineer you should be familiar with the six motions of a vessel. Which of these motions affects the governing "p...
  89. #824 As Chief Engineer or First Assistant Engineer you should be familiar with the six motions of a vessel. Which of these motions affects the governing "l...
  90. #825 As Chief Engineer or First Assistant Engineer you should be familiar with the six motions of a vessel. Which of these motions affects the governing "m...
  91. #826 By what method is the final light ship weight, longitudinal and vertical centers of gravity of a vessel, and final assignment of the load lines determ...
  92. #828 As Chief Engineer you should understand the fundamental principles of ship construction and theory and factors affecting trim and stability, including...
  93. #829 As Chief Engineer you should understand the concept of loll and its cause. An angle of loll is commonly caused by which of the following conditions?
  94. #830 IMO Resolution A167, 1968, Res. No. 749(18) 3.1 (1995, amended 1999), and section 2.2 in the 2008 IS Code, sets the general criterion for vessels of m...
  95. #831 After refueling your vessel you notice that the GM of the vessel is less than the required 0.15 meters. What do you do?
  96. #832 The distance between the bottom of the hull and the waterline is called __________.
  97. #833 After transferring a weight forward on a vessel, the draft at the center of flotation will __________.
  98. #834 Many uninspected motor vessels require load lines. For the purpose of the Load Line Regulations, the term 'surveyor' means __________.
  99. #835 With no environmental forces acting on the vessel, the center of gravity of an inclined vessel is vertically aligned with the __________.
  100. #836 A vessel's center of gravity is lowered when the __________.

Engineering Safety questions: what to expect

Q How many Engineering Safety questions are in the Engine pool?

There are 1,109 Engineering 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 Engineering Safety module from the same pool.

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

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

Q Are these the real USCG Engineering 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 Engine question pool

The Engine pool holds the current U.S. Coast Guard questions for engineering credentials, from QMED ratings through DDE and Assistant Engineer up to Chief. Answer any question to see the correct choice instantly.