A . displacement
B . stability
C . towrope pull
D . propeller desig
[单选题]If a towing vessel and her tow are severely restricted in their ability to change course，they may show lights in addition to their towing identification lights. These additional lights may be shown if the tow is（）.A . pushed aheadB . towed alongsideC
[单选题]You may BEST turn a twin-screw vessel about，to the right，in a narrow channel by using ______.A．Both engines ahead and helmB．One engine onlyC．Port engine ahead and the starboard engine asternD．Both engines astern and use helm
[单选题]On a passenger vessel，the vessel’s name must appear on（）.A . ring life buoyB . lifeboatsC . lifeboat oarsD . All of the above
[单选题]A vessel’s LCG is determined by（）.A . dividing the total longitudinal moment summations by displacementB . dividing the total vertical moment summations by displacementC . multiplying the MTC by the longitudinal momentsD . subtracting LCF from LCB
[单选题]The floors in a vessel’s hull structure are kept from tripping，or folding over，by（）.A . face platesB . bottom longitudinalsC . longitudinal deck beamsD . transverse deck beam
[单选题]To improve your vessel’s stability in a hazardous situation，you should（）.A . ballast deep tanks if they are slackB . transfer ballast athwartshipsC . pump out double bottomsD . fill double bottoms from deep tank
[单选题]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（）.A . TCGB . transverse momentC . righting momentD . transverse free surface moment
[单选题]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（）.A . metacentric pointB . metacenterC . metacentric radiusD . tipping center
[单选题]When a vessel’s LCG is aft of her LCB，the vessel will（）.A . trim by the sternB . trim by the headC . be on an even keelD . be tender
[单选题]What’s the best title of this passage?__________ .A． A pig and a cow B. A farm C. The most important animal