A vessel trimmed by the stern has a（）.

By night，you sight the lights of a vessel engaged in underwater operations. If an obstruction exists on the port side of the vessel，it will be marked by（）.

A . a floodlight B . two red lights in a vertical line C . a single red light D . any visible light

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Your vessel is damaged with no list，but down by the stern. There is progressive flooding and trim by the stern is increasing. What is the effect on transverse stability after the deck edge at the stern is submerged?（）

A . KB increases，increasing BM and therefore GM B . KG increases due to the weight of the added water on deck C . BM decreases from loss of water plane and greater volume D . There is no effect on transverse stability

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Your vessel is listening 4°to port and has a short rolling period. There is loose firefighting water in the hull. The ship is trimmed down by th end with one foot of freeboard at the bow. Which action should you take first?（）

A . Press up the slack No.1 starboard double bottom tank B . Pump out the forepeak tank C . Eliminate the water in the tween decks aft D . Jettision stores out of the paint locker in the focsle

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A flooded lifeboat on board a vessel would adversely affect the vessel’s stability by（）.

A . increasing the righting moment B . decreasing the vessel's displacement C . increasing the reserve buoyancy D . shifting the CG（center of gravity）off center

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Aboard a vessel, dividing the sum of the vertical moments by the total weight yields the vessel’s（）.

A . height of the center of gravity A.LCG B . vertical moment C . righting moment D . inclining moment

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The change in trim of a vessel may be found by（）.

A . dividing the trim moments by MT1 B . subtracting the LCF from the LCB C . looking at the Hydrostatic Properties Table for the draft of the vessel D . dividing longitudinal moments by the displacement

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In a crossing situation on international waters, a short blast by the give-way vessel indicates that the vessel（）.

A . is holding course and speed B . is turning to starboard C . intends to pass port to port D . will keep out of the way of the stand-on vessel

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Your tank vessel is loaded down to her marks, and you find that she has too much trim by the stern,To adjust the trim, you may（）.

A . add ballast forward B . load more cargo forward C . shift bunkers forward D . All of the above

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When evacuating a seaman by helicopter lift，the vessel should be（）.

A . stopped with the wind dead ahead B . stopped with the wind on the beam C . underway with the wind 30°on the bow D . underway on a course to provide no apparent wind

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A vessel which is being assisted by an icebreaker would display a flag hoist consisting of the code numeral “4”when the vessel（）.

A . speed begins to drop B . stops C . receives ice damage D . becomes icebound

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During counterflooding to correct a severe list or trim aggravated by an off-center load，a ship suddenly takes a list or trim to the opposite side. You should（）.

A . continue counterflooding in the same direction B . continue counterflooding，but in the opposite direction C . immediately stop counterflooding D . deballast from the low side

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The compass heading of a vessel differs from the true heading by（）.

A . compass error B . variation C . magnetic dip D . deviatio

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A vessel’s Classification Certificate is issued by the （）.

A . Bureau of Shipping B . National Cargo Bureau C . Port Authorities D . The Custom

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That center around which a vessel trims is called the（）.

A . tipping center B . center of buoyancy C . center of gravity D . turning center

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A vessel in distress should send by radio telephone the two tone alarm signal followed immediately by the（）.

A . distress position B . spoken words "Mayday，Mayday，Mayday" C . ship's name D . ship's call letter

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A vessel brought alongside should be fended off the towing vessel by（）.

A . crew members using their arms B . crew members using the strong muscles of their legs C . fenders D . No fending is necessary due to the rugged construction of most towing vessel

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Which action will affect the trim of a vessel? （）

A . Moving high weights lower B . Adding weight at the tipping center C . Moving a weight forward D . Moving lower weight high

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When a vessel is inclined by an external force，the（）.

A . shape of the vessel's underwater hull remains the same B . vessel's center of gravity shifts to the center of the vessel's underwater hull C . vessel's center of buoyancy shifts to the center of the vessel's underwater hull D . vessel's mean draft increase

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The heading of a vessel is indicated by what part of the compass? （）

A . Card B . Needle C . Lubber's line D . Gimbal

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Prior to loading barges over the stern of a LASH vessel，the vessel should be trimmed in what manner?（）.

A . Two to four feet by the bow B . Slightly by the bow C . No trim should be permitted D . Slightly by the ster

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Aboard a vessel, dividing the sum of the transverse moments by total weight yields the vessel’s

A.vertical moments B.transverse position of the center of gravity C.inclining moments D.righting moments

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Aboard a vessel, dividing the sum of the vertical moments by total weight yields the vessel’s_____.

A.height of the center of gravity B.vertical moments C.righting moments D.inclining moments

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A vessel trimmed by the stern has a（）.

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