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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 1,801–1,900 of 3,245 · page 19 of 33

  1. #1948 The center of buoyancy is located at the __________.
  2. #1949 The geometric center of the underwater volume of a floating vessel is the center of __________.
  3. #1950 Buoyancy is a measure of the ship's __________.
  4. #1951 The center of volume of the immersed portion of the hull is called the __________.
  5. #1952 The center of the underwater volume of a floating vessel is the __________.
  6. #1953 The center of flotation of a vessel is __________.
  7. #1954 The center of flotation of a vessel is the point in the waterplane __________.
  8. #1955 With no environmental forces, the center of gravity of an inclined vessel is vertically aligned with the __________.
  9. #1956 In the absence of external forces, the center of buoyancy of an inclined vessel is vertically aligned directly below the __________.
  10. #1957 In the presence of external forces, the center of buoyancy of an inclined vessel is vertically aligned with the __________.
  11. #1958 With no environmental forces, the center of gravity of an inclined vessel is vertically aligned directly above the __________.
  12. #1959 The geometric center of the waterplane area is called the __________.
  13. #1960 The center of flotation of a vessel is the geometric center of the __________.
  14. #1961 In the absence of external forces, the center of gravity of a floating vessel is located directly in line with the __________.
  15. #1984 A vessel with a large GM will __________.
  16. #2007 The free surface correction depends upon the dimensions of the surface of the free liquid and the __________.
  17. #2008 Which statement about the free surface correction is TRUE?
  18. #2009 The free surface effects of a partially full liquid tank decrease with increased __________.
  19. #2010 Which statement about the free surface effect is TRUE?
  20. #2011 Which statement about the free surface correction is TRUE?
  21. #2012 The effects of free surface on initial stability depend upon the dimensions of the surface of the free liquids and the __________.
  22. #2013 Which statement about free surface is TRUE?
  23. #2014 Which statement about the free surface correction is TRUE?
  24. #2015 The free surface effects of a partially full tank in a vessel increase with the __________.
  25. #2016 Which statement about the free surface effect is TRUE?
  26. #2017 Which factor has the greatest effect on the value of the free surface correction?
  27. #2018 What does NOT affect the value of the free surface correction?
  28. #2019 The most important figure in calculating the free surface constant of a tank carrying liquids is __________.
  29. #2020 The effects of free surface on a vessel's initial stability do NOT depend upon the __________.
  30. #2021 The effect of free surface on initial stability depends upon __________.
  31. #2022 A tank which carries liquid is dangerous to the stability of a vessel when it is __________.
  32. #2023 A tank which is NOT completely full or empty is called __________.
  33. #2024 Reducing the liquid free surfaces in a vessel reduces the __________.
  34. #2025 The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the __________.
  35. #2026 The correction to KG for transverse free surface effects may be found by dividing the vessel's displacement into the __________.
  36. #2027 To calculate the free surface correction, it is necessary to divide the free-surface moments by the __________.
  37. #2028 Increasing the number of slack liquid tanks has the effect of raising the __________.
  38. #2029 What is the principal danger from the liquid in a half full tank onboard a vessel?
  39. #2030 A tank 36 ft. by 36 ft. by 6 ft. is filled with water to a depth of 5 ft. If a bulkhead is placed in the center of the tank running fore-and-aft along...
  40. #2031 When displacement increases, the free surface moments of slack tanks __________.
  41. #2032 When displacement increases, the free surface corrections for slack tanks __________.
  42. #2033 As the displacement of a vessel increases, the detrimental effect of free surface __________.
  43. #2034 A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed?
  44. #2035 Which will improve stability?
  45. #2036 The principal danger from ice collecting on a vessel is the _________.
  46. #2037 Which of the following describes why topside icing, which is usually off-center, decreases vessel stability?
  47. #2038 Topside icing that blocks freeing ports and scuppers __________.
  48. #2039 Topside icing decreases vessel stability because it increases __________.
  49. #2041 The static stability curve for a given vessel peaks at 34°. For this ship, the danger angle for a permanent list would be about __________.
  50. #2042 If the cause of severe list is off-center ballast, counterflooding into empty tanks will __________.
  51. #2043 At an angle of loll, the capsizing moment is __________.
  52. #2044 At an angle of loll, the righting moment is __________.
  53. #2045 Before counterflooding to correct a list, you must be sure the list is due to which of the following choices?
  54. #2046 An upright vessel has negative GM. GM becomes positive at the angle of loll because the __________.
  55. #2047 Your vessel is listing because of a negative GM. To lower G below M, you should __________.
  56. #2048 At an angle of loll, the righting arm (GZ) is __________.
  57. #2049 The value of the righting arm at an angle of loll is __________.
  58. #2050 When inclined to an angle of list, the value of the righting arm is __________.
  59. #2051 The difference between the forward and aft drafts is __________.
  60. #2052 A vessel is "listed" when it is __________.
  61. #2053 A vessel is "listed" when it is __________.
  62. #2054 In the absence of external forces, adding weight on one side of a floating vessel causes the vessel to __________.
  63. #2055 If a vessel lists to port, the center of buoyancy will __________.
  64. #2056 When a vessel is inclined by an external force, the __________.
  65. #2057 Your vessel has taken a slight list from off-center loading of material on deck. The __________.
  66. #2058 Your vessel has just finished bunkering and has a small list due to improper distribution of the fuel oil. This list will cause __________.
  67. #2059 If your vessel has a list to port due to negative GM and off-center weight, the first corrective measure you should take is to __________.
  68. #2060 The difference between the starboard and port drafts caused by shifting a weight transversely is __________.
  69. #2061 During cargo operations, your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list, you sho...
  70. #2062 Assuming an even transverse distribution of weight in a vessel, which condition could cause a list?
  71. #2063 If your vessel will list with equal readiness to either side, the list is most likely caused by __________.
  72. #2064 A vessel continually lists to one side and has a normal rolling period. Which statement is TRUE?
  73. #2066 A vessel has a strong wind on the port beam. This has the same effect on stability as __________.
  74. #2067 When a vessel is inclined at a small angle the center of buoyancy will __________.
  75. #2068 Movement of liquid in a tank when a vessel inclines causes an increase in __________.
  76. #2069 Your vessel rolls slowly and sluggishly. This indicates that the vessel __________.
  77. #2070 The original equilibrium position is always unstable when __________.
  78. #2071 In illustration D001SA below, what represents the metacentric height? illustration
  79. #2072 An unstable upright equilibrium position on a vessel means that the metacenter is __________.
  80. #2073 When the height of the metacenter is less than the height of the center of gravity of a vessel, the upright equilibrium position is __________.
  81. #2074 When the height of the metacenter is the same as the height of the center of gravity of a vessel, the upright equilibrium position is __________.
  82. #2075 Stable equilibrium for a vessel means that the metacenter is __________.
  83. #2076 When the height of the metacenter is greater than the height of the center of gravity, a vessel is in __________.
  84. #2077 For small angles of inclination, if the KG were equal to the KM, then the vessel would have __________.
  85. #2078 The original equilibrium position is stable when __________.
  86. #2079 A neutral equilibrium position for a vessel means that the metacenter is __________.
  87. #2080 The point to which your vessel's center of gravity (G) may rise and still permit the vessel to have positive stability is called the __________.
  88. #2081 What is the definition of transverse metacenter?
  89. #2082 When the height of the metacenter is less than the height of the center of gravity, a vessel has which type of stability?
  90. #2083 When the height of the metacenter is the same as the height of the center of gravity, the upright equilibrium position is __________.
  91. #2084 When the height of the metacenter is greater than the height of the center of gravity a vessel has which type of stability?
  92. #2085 When the height of the metacenter is less than the height of the center of gravity, a vessel has which type of stability?
  93. #2086 When the height of the metacenter is greater than the height of the center of gravity, the upright equilibrium position is stable and stability is ___...
  94. #2087 In small angle stability theory, the metacenter is located at the intersection of the inclined vertical centerline and a vertical line through _______...
  95. #2088 At all angles of inclination, the metacenter is __________.
  96. #2089 Metacentric height is an indication of a vessel's stability __________.
  97. #2090 What is the stability term for the distance from the center of gravity (G) to the Metacenter (M), when small-angle stability applies?
  98. #2091 Which formula can be used to calculate metacentric height?
  99. #2092 The difference between the height of the metacenter and the metacentric height is known as __________.
  100. #2093 The abbreviation GM is used to represent the __________.

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.