單項選擇題The pivoting point of a fully loaded vessel with normal trim proceeding ahead at sea speed is（）.

A.right at the bow
B.one-third the length of the vessel from the bow
C.one-half the length of the vessel from the bow
D.two-thirds the length of the vessel from the bow


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1.單項選擇題The objective of shoring a damaged bulkhead is to（）.

A.force the warped，bulged，or deformed sections back into place
B.support and hold the area in the damaged position
C.withstand subsequent additional damage
D.make a watertight seal at the damaged area

2.單項選擇題The main function of the drawworks on a ship is to（）.

A.transport tubulars from the pipe racks to the derrick floor
B.maintain constant tension on the marine riser
C.store and secure the excess drill line
D.lower and hoist the drill string into and out of the drilled hole

4.單項選擇題The inner bottom is the（）.

A.tank top
B.compartment between the tank top and shell of the vessel
C.inner side of the vessel's shell
D.space between two transverse bottom frames

5.單項選擇題The flood stream here is at an average rate of 0.8（）.

A.cables
B.miles
C.kilometers
D.knot