A.afford access to the shell through the double bottoms
B.collect water to be pumped out
C.provide access for the pneumercator
D.provide a base line for sounding measurements
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A.the radio apparatus fitted on the portside
B.the radio with a portable equipment
C.the radio equipment which is easily movable
D.the portable radio with some apparatus
A.radial
B.sheath-screw
C.gravity
D.quadrantal
A.shape of the anchor
B.stowage of the anchor on board
C.anchor's ability to dig in
D.size of the vessel and its draft
A.control the pressure of the oxygen as it enters the body
B.allow the wearer to manually give himself oxygen
C.release excess heat which would otherwise cause the bottle to explode
D.allow exhaled gases to pass outside the bottle
A.boss
B.knuckle
C.skeg
D.strut
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All electrical appliances aboard a vessel should be grounded to（）.
The C02 flooding system is actuated by a sequence of steps which are（）.
In ship construction，keel scantlings should be the greatest（）.
The portable radio apparatus means（）.
The rudders are amidships and both screws are going ahead. What will happen if the starboard screw is stopped?（）
In the piping systems of a vessel，what type of valve gives the least resistance to fluid flow when fully open?（）.
Permission is kindly requested（）the ballast water.
The function of the bypass valve on the self-contained breathing apparatus is to（）.
If a gasoline engine turns over freely but will not start，the cause is generally（）.
In nautical terminology a dog is a（）.