Review Now

PREVIOUS
NEXT

1. According to U.S. regulations what is the maximum allowable working pressure (MAWP) for each hose assembly used for transferring oil?

 
 

2. Who may serve as the "person in charge" of loading and discharge operations aboard a tankship?

 
 

3. When loading or discharging dry mud or cement, crew members should use goggles and __________.

 
 

4. For a MODU with trim, a decrease in GMT will cause the angle of inclination to __________.

 
 

5. A MODU lists and trims about the __________.

 
 

6. The height of the metacenter above the keel will vary depending on the __________.

 
 

7. On a semisubmersible drilling unit, increasing riser tension reduces __________.

 
 

8. What is the displacement of a barge which measures 85' x 46' x 13' and is floating in salt water with a draft of ten feet?

 
 

9. You are making a heavy lift with the jumbo boom. Your vessel displaces 7940 T. The 45-ton weight is on the pier and its center is 60' to starboard of the centerline. The head of the boom is 110' above the base line and the center of gravity of the lift when stowed on deck will be 50' above the base line. As the jumbo boom takes the strain the ship lists to 4.5°. What is the GM with the cargo stowed?

 
 

10. 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?

 
 

11. 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?

 
 

12. 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?

 
 

13. 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 6 seconds, what is the GM?

 
 

14. 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?

 
 

15. 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 seconds. What is your vessel's approximate GM?

 
 

16. 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?

 
 

17. 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 distance of 8 feet? (total displacement is 960 tons)

 
 

18. 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 distance of 6 feet? (total displacement is 210 tons)

 
 

19. Your vessel displaces 564 tons. The existing deck cargo has a center of gravity of 1.5 feet above the deck and weighs 41 tons. If you load 22 tons of ground tackle with an estimated center of gravity of 2.5 feet above the deck, what is the final height of the CG of the deck cargo?

 
 

20. Your vessel displaces 497 tons. The existing deck cargo has a center of gravity of 2.5 feet above the deck and weighs 24 tons. If you load 18 tons of ground tackle with an estimated center of gravity of 18 inches above the deck, what is the final height of the CG of the deck cargo?

 
 

21. A cargo of 100 tons is to be loaded on deck 20 feet from the ship's centerline. The ship's displacement including the 100 tons of cargo will be 10,000 tons and the GM two feet. What would be the list of the vessel after loading the cargo?

 
 

22. A cargo of 60 tons is to be loaded on deck 20 feet from the ship's centerline. The vessel's displacement including the 60 ton cargo will be 6,000 tons and the GM two feet. What would be the list of the vessel after loading this cargo?

 
 

23. You are fighting a fire in a cargo hold on your vessel. Which action is most important concerning the stability of the vessel?

 
 

24. Your vessel has been in a collision. After assessing the damage, you begin down flooding. This will cause the KB to do what?

 
 

25. A vessel is described as a two compartment vessel when it __________.

 
 

26. Your vessel is damaged, listing to port and on occasion flopping to the same angle to starboard. It has a long, slow, sluggish roll around the angle of list. There is excessive trim by the stern with little freeboard aft. What action should you take FIRST to correct this situation?

 
 

27. Your vessel is damaged and partially flooded. It is listing 12° to port and trimmed 8 feet down by the head. It has a long, slow, sluggish roll. Which action should you take FIRST?

 
 

28. Your vessel is damaged and listing to port. The rolling period is long, and the vessel will occasionally assume a starboard list. Which action should you take FIRST?

 
 

29. Your vessel was damaged and initially assumed a significant list and trim; however, further increase has been slow. Based on this data, what should you expect?

 
 

30. What is the maximum mean draft to which a vessel may be safely loaded called?

 
 

31. For an upright vessel, draft is the vertical distance between the keel and the __________.

 
 

32. What is the distance between the bottom of the hull and the waterline called?

 
 

33. What is the weight of the liquid displaced by a vessel floating in sea water equal to?

 
 

34. The distance between the waterline of a vessel and the main deck is called __________.

 
 

35. A weight of 1,000 short tons is equivalent to __________.

 
 

36. What abbreviation represents the height of the center of buoyancy?

 
 

37. Stability is determined principally by the location of two points in a vessel: the center of buoyancy and the __________.

 
 

38. Stability is determined principally by the location of the point of application of two forces: the downward-acting gravity force and the __________.

 
 

39. The geometric center of the underwater volume is known as the __________.

 
 

40. The center of buoyancy is located at the __________.

 
 

41. In the absence of external forces, the center of buoyancy of an inclined vessel is vertically aligned directly below the __________.

 
 

42. The geometric center of the waterplane area is called the __________.

 
 

43. In the absence of external forces, the center of gravity of a floating vessel is located directly in line with the __________.

 
 

44. Reducing free surfaces has the effect of lowering the __________.

 
 

45. Increasing free surfaces has the effect of raising the __________.

 
 

46. Addition of weight above the center of gravity of a vessel will ALWAYS __________.

 
 

47. The center of buoyancy and the metacenter are in the line of action of the buoyant force __________.

 
 

48. The vertical distance between G and M is used as a measure of __________.

 
 

49. When stability of a vessel is neutral, the value of GM __________.

 
 

50. The righting moment can be determined by multiplying the displacement by the __________.

 
 

51. A vessel with a small GM will __________.

 
 

52. What is used as an indicator of initial stability?

 
 

53. A vessel with a small GM will __________.

 
 

54. The important stability parameter, KG, is defined as the __________.

 
 

55. A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed?

 
 

56. The principal danger from ice collecting on a vessel is the _________.

 
 

57. Topside icing that blocks freeing ports and scuppers __________.

 
 

58. The static stability curve for a given vessel peaks at 34°. For this ship, the danger angle for a permanent list would be about __________.

 
 

59. If the cause of severe list is off-center ballast, counterflooding into empty tanks will __________.

 
 

60. At an angle of loll, the capsizing moment is __________.

 
 

61. Before counterflooding to correct a list, you must be sure the list is due to which of the following choices?

 
 

62. At an angle of loll, the righting arm (GZ) is __________.

 
 

63. During cargo operations, your vessel develops a list due to the center of gravity rising above the transverse metacenter. To correct the list, you should __________.

 
 

64. The original equilibrium position is always unstable when __________.

 
 

65. When the height of the metacenter is less than the height of the center of gravity of a vessel, the upright equilibrium position is __________.

 
 

66. 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 __________.

 
 

67. What is the definition of transverse metacenter?

 
 

68. What is the stability term for the distance from the center of gravity (G) to the Metacenter (M), when small-angle stability applies?

 
 

69. The difference between the height of the metacenter and the height of the center of gravity is __________.

 
 

70. The horizontal distance between the vertical lines of action of gravity and the buoyant forces is called the __________

 
 

71. Subtracting KG from KM yields __________.

 
 

72. For a floating vessel, the result of subtracting KG from KM is the __________.

 
 

73. If the metacentric height is small, a vessel will __________

 
 

74. When the height of the metacenter is the same as the height of the center of gravity, the metacentric height is equal to __________

 
 

75. The moment created by a force of 12,000 tons and a moment arm of 0.25 foot is __________.

 
 

76. A moment of 300 ft-tons is created by a force of 15,000 tons. What is the moment arm?

 
 

77. Aboard a vessel, multiplying a load's weight by the distance of the load's center of gravity from the centerline results in the load's __________.

 
 

78. When a wind force causes a vessel to heel to a static angle, the __________.

 
 

79. When positive stability exists, GZ represents the __________.

 
 

80. The amount of freeboard which a ship possesses has a tremendous effect on its __________.

 
 

81. The change in trim of a vessel may be found by __________.

 
 

82. Which would NOT provide extra buoyancy for a vessel with no sheer?

 
 

83. The two points that act together to trim a ship are the __________.

 
 

84. A vessel trimmed by the stern has a __________.

 
 

85. The shearing stresses on a ship's structure are usually greatest at __________.

 
 

86. Which is the MOST important consideration for a tank vessel?

 
 

87. Your vessel has a forward draft of 26'-11" and an after draft of 29'-07". How many tons of cargo can be loaded before the vessel reaches a mean draft of 28'-06" if the TPI is 69?

 
 

88. A bulk freighter 580 ft. in length, 60 ft. beam, with a waterplane coefficient of .84 is floating in salt water at a draft of 21 ft. How many long tons would it take to increase the mean draft 1"?

 
 

89. Your vessel's draft is 24'-06" forward and aft. The MT1 of your vessel is 1000 ft-tons. How many tons of cargo must be loaded in number 4 hold, which is 100 feet abaft the tipping center, if she is to have a 2 foot drag?

 
 

90. Using the Guidance Manual for Loading the M.V. Grand Haven, determine the amount of ballast required in tank No. 3 (P & S) to maintain drafts of 17'-00" forward and 22'-06" aft for a vessel loaded with grain which has a test weight of 34 lbs.

 
 

91. Your vessel's existing draft is FWD 25'-04", AFT 24'-08". Using the Guidance Manual for Loading M.V. GRAND HAVEN, determine the new draft if 634 long tons are discharged from NO. 19 hatch.

 
 

92. Your vessel's existing draft is FWD 17'-03", AFT 18'-09". Using the Guidance Manual for Loading M.V. Grand Haven, determine the new draft if 450 long tons are loaded in No. 16 hatch.

 
 

93. A six-strand composite rope made up of alternate fiber and wire strands around a fiber core is called __________.

 
 

94. The safe working load (SWL) of wire rope with a safety factor of 6 is what percent of its strength?

 
 

95. The best method to secure a tow line to a cleat is to __________.

 
 

96. Keeping the draft at or below the load line mark will insure that the vessel has adequate __________.

 
 

97. You would NOT secure a line to a __________

 
 

98. When paying out nylon line from around the bitts __________.

 
 

99. A chain bridle is used when towing astern because it __________

 
 

100. What is used to prevent wear on towlines that bear on hard surfaces?

 
 

click here to take the assessment test