单项选择题How are riveted lap joints made watertight?()

A.The faying surfaces are coated with white lead (or similar product) before the rivets are set
B.A sealing weld bead of 1/8 or less pitch is run along the plate edge
C.The plate edge is split close to an adjacent plate and mechanically forced into contact with the adjacent plate
D.A properly riveted joint will be watertight; any leakage is stopped by setting up on the rivets


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1.单项选择题For the purpose of the Rules,except where otherwise required,the term().

A.vessel includes seaplanes
B.seaplane includes non-displacement craft
C.vessel engaged in fishing includes a vessel fishing with trolling lines
D.vessel restricted in her ability to maneuver includes fishing vessels

2.单项选择题FLOATING,CAUSED BY WINDS AND CURRENT WITH A DETERMINABLE DIRECTION defines().

A.Floating
B.Sailing
C.Drifting
D.Running into danger

4.单项选择题As a rule,ships of most configurations,when drifting in calm water with neglible current,will lie().

A.bow to the wind
B.beam to the wind
C.stern to the wind
D.with the wind on the quarter

5.单项选择题An inclined semisubmersible with a very short rolling period about a constant angle of list is likely to have().

A.an off-center TCG
B.an LCG greater than level vessel LCB
C.a negative GM
D.excessive free surfaces

6.单项选择题All of the following are engaged in fishing EXCEPT().

A.A vessel trawling
B.A vessel trolling
C.A vessel setting nets
D.A vessel tending lines

7.单项选择题A vessel with a large GM will().

A.have more resistance to listing in case of damage
B.have less tendency to have synchronous rolling
C.be less likely to have cargo shift
D.ride more comfortably

8.单项选择题A vessel will NOT show sidelights when().

A.underway but not making way
B.making way,not under command
C.not under command,not making way
D.trolling underway

9.单项选择题A vessel is tide rode when it is().

A.carrying extra rudder to compensate for the current
B.necessary to adjust the course steered to allow for the current
C.at anchor and stemming the current
D.being forced off of a pier by the hydraulic effect of the current

10.单项选择题At that time my ship and others were()within 40 degrees of the compass.

A.yawing
B.moving
C.turning
D.pitching