Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Safety & Environmental Protection (Deck) (Set 62)
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Question 1 of 30
A tank which carries liquid is dangerous to the stability of a vessel when it is __________.
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30 MCQs #1 A tank which carries liquid is dangerous to the stability of a vessel when it is __________. #2 A tank which is NOT completely full or empty is called __________. #3 Reducing the liquid free surfaces in a vessel reduces the __________. #4 The correction to KG for longitudinal free surface effects for a vessel can be found by dividing the vessel's displacement into the __________. #5 The correction to KG for transverse free surface effects may be found by dividing the vessel's displacement into the __________. #6 To calculate the free surface correction, it is necessary to divide the free-surface moments by the __________. #7 Increasing the number of slack liquid tanks has the effect of raising the __________. #8 What is the principal danger from the liquid in a half full tank onboard a vessel? #9 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 the 36-foot axis, how will the value of the moment of inertia of the free surface be affected? #10 When displacement increases, the free surface moments of slack tanks __________. #11 When displacement increases, the free surface corrections for slack tanks __________. #12 As the displacement of a vessel increases, the detrimental effect of free surface __________. #13 A vessel is equipped with cross-connected deep tanks. In which situation should the cross-connection valve be closed? #14 Which will improve stability? #15 The principal danger from ice collecting on a vessel is the _________. #16 Which of the following describes why topside icing, which is usually off-center, decreases vessel stability? #17 Topside icing that blocks freeing ports and scuppers __________. #18 Topside icing decreases vessel stability because it increases __________. #19 The static stability curve for a given vessel peaks at 34°. For this ship, the danger angle for a permanent list would be about __________. #20 If the cause of severe list is off-center ballast, counterflooding into empty tanks will __________. #21 At an angle of loll, the capsizing moment is __________. #22 At an angle of loll, the righting moment is __________. #23 Before counterflooding to correct a list, you must be sure the list is due to which of the following choices? #24 An upright vessel has negative GM. GM becomes positive at the angle of loll because the __________. #25 Your vessel is listing because of a negative GM. To lower G below M, you should __________. #26 At an angle of loll, the righting arm (GZ) is __________. #27 The value of the righting arm at an angle of loll is __________. #28 When inclined to an angle of list, the value of the righting arm is __________. #29 The difference between the forward and aft drafts is __________. #30 A vessel is "listed" when it is __________.
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