A.is easy to connect
B.provides an effective catenary and absorbs shock due to its weight
C.makes rigging a swivel unnecessary
D.prevents the tow from yawing by the drag of the chains in a seaway
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A.is more flexible and has the ability to absorb shock because of its weight
B.is less subject to wear and damage from abrasion
C.requires little maintenance
D.All of the above
A.a rotation
B.a revolution
C.space motion
D.nutation
A.greater than the declination and both are of the same name
B.less than the declination and both are of the same name
C.greater than the declination and both are of contrary name
D.less than the declination and both are of contrary name
A.Under any condition
B.If the grounding lasts over 24 hours
C.If it creates a hazard to the environment
D.At the owner's discretion
A.bifurcation
B.fish net area
C.anchorage area
D.dredging area
最新試題
A chart position enclosed by a square is a(n)（）.
A vessel’s quarter is that section which is（）.
A common class of wire rope used for mooring is the 6x19 class. What does the 6 represent?（）
A “check” line is（）.
A chart with a natural scale of 1:160，000 is classified as a（）.
A “l(fā)iner” in riveted construction of a vessel is a(n)（）.
A block and tackle is “rove to advantage”. This means that the（）.
A casualty report of an intentional grounding of a ship is required under what condition?（）
A change of a documented vessel’s name can only be made by the（）.
A “bowline” is used to（）.