A.from the ship's propeller when making up aft
B.from being overrun if making up forward
C.hull damage while alongside passing a hawser
D.getting in a tripping position
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A.at any time while underway
B.while at anchor
C.while alongside a vessel
D.All of the above
A.when at anchor
B.only when making way
C.at any time when underway
D.only when the identifying lights are not being shown
A.underway，but not making way
B.aground
C.being towed
D.not engaged in pilotage duty
A.should never use radar bearings
B.should only use radar bearings when the range exceeds the distance to the horizon
C.can use radar information from one object to fix the position
D.must use information from targets forward of the beam
A.straight line
B.arc
C.parabola
D.line parallel to the coast
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For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.
Clearance gauges at bridges indicate （）.
Above-normal tides near the center of a hurricane maybe caused by the （）.
A vessel not to impede the passage of another vessel is not relieved （） taking collision-avoiding action.
The height of a light is measured from which reference plane?（）
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
Lateral movement of the vessel to leeward of its course defines （）.
The height of tide is the （）.
Areas enclosed by a long and short dashed magenta line indicate （）.
On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.