A.A downbound vessel
B.An upbound vessel
C.Current reaction when the lock chamber is being emptied
D.Current reaction when the lock chamber is being filled
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A.pigtail chain
B.thrash chain
C.crown chain
D.wear chain
A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases
A.design of the anchor
B.weight of the anchor
C.scope of the anchor chain
D.size of the vessel
A.the amount of line paid out
B.how much the vessel sheers while at anchor
C.any change in the tautness of the anchor chain
D.changes in bearings of fixed objects onshore
A.eliminate navigational hazards by allowing the chain to lie along the harbor bottom
B.increase the anchor's reliability by providing a large catenary in the chain
C.permit the ship to maneuver in the stream while weighing anchors
D.prevent damage to the stern caused by swinging against the pier in the approach
最新試題
You are planning to anchor in an area where several anchors have been lost due to fouling.As a precaution，you should（）.
What effect is achieved from soaking an anchor（）．
You are mooring to a buoy．You should approach the buoy with the current from（）.
You are docking a vessel in a slip which has its entrance athwart the tide.You land the ship across the end of the pier，stemming the tide，preparatory to breaking the ship around the corner.You have one tug to assist．Where would you generally tie up the tug（）.
If the winch should fail while you are hauling in the anchor，what prevents the anchor cable from running out（）.
The centre of lateral resistance is（）.
You are riding to a single anchor.The vessel is yawing excessively.Which action should be taken to reduce the yawing（）.
When entering the bridge，pilots of the Suez Canal want the master of the ship to fill in （）.
If a ship has sternway，with accommodation block aft，she may settle with the wind（）.
Pilotage in this country is（）.