Pass Benchmark: 70% (21/30) • Standard: USCG NMC / 46 CFR
USCG Safety & Environmental Protection (Deck) (Set 54)
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Question 1 of 30
Reserve buoyancy is the __________.
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30 MCQs #1 Reserve buoyancy is the __________. #2 Reserve buoyancy is __________. #3 The volume of a vessel's intact watertight space above the waterline is its __________. #4 Which is an indication of reserve buoyancy? #5 Reserve buoyancy is __________. #6 Your vessel has run aground and is touching bottom for the first one-quarter of its length. What is the LEAST desirable method from the standpoint of stability to decrease the bottom pressure? #7 Your vessel has run hard aground in an area subject to heavy wave action. Backing full astern failed to free her. Which action should be taken next? #8 Your ship of 12,000 tons displacement has a center of gravity of 21.5 feet above the keel. You run aground and estimate the weight aground is 2500 tons. The virtual rise in the center of gravity is __________. #9 What would have the greatest affect on a vessel's longitudinal strength? #10 Where are the draft marks required to be displayed on a ship? #11 You are reading the draft marks as shown in illustration D032DG. The water level forward is at the top of the 8, and the mean water level aft is at the top of the 8. What is the mean draft? #12 You are reading the draft marks as shown in illustration D032DG. The water level forward is 4 inches below the 11, and the water level aft is 2 inches below the top of the 11. What is the mean draft? #13 You are reading the draft marks as shown in illustration D032DG. The water level is at the top of number 8. What is the draft? #14 You are reading the draft marks as shown in illustration D032DG. The water level is about 4 inches below the bottom of the number 11. What is the draft? #15 You are reading the draft marks as shown in illustration D032DG. The water level is about 4 inches below the bottom of 10. What is the draft? #16 You are reading the draft marks as shown in illustration D032DG. The top 2 inches of the 9 forward is visible above the water level, and the water level is four inches below the 10 aft. What is the mean draft? #17 You are reading the draft marks as shown in illustration D032DG. The water level is at the bottom of number 11. What is the draft? #18 You are reading the draft marks as shown in illustration D032DG. The top 2 inches of number "9" are visible above the waterline. What is the draft? #19 What is the center around which a vessel trims called? #20 You are reading the draft marks as shown in illustration D032DG. The water level forward leaves about 4 inches of the 11 visible, and the water level aft is at the top of the 10. What is the mean draft? #21 When the forward drafts and the after drafts are averaged, which of the following describes the result? #22 How will the draft at the center of floatation change after transferring a weight forward on a vessel? #23 What is the maximum mean draft to which a vessel may be safely loaded called? #24 What is the difference between the initial trim and the trim after loading known as? #25 For an upright vessel, draft is the vertical distance between the keel and the __________. #26 You are reading draft marks on a vessel. The water level is halfway between the bottom of the number 5 and the top of the number 5. What is the draft of the vessel? #27 The wind has caused a difference between drafts starboard and port. This difference is known as which of the following? #28 What is the difference between the starboard and port drafts due to the wind or seas called? #29 What is the distance between the bottom of the hull and the waterline called? #30 What is the weight of the liquid displaced by a vessel floating in sea water equal to?
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