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單項(xiàng)選擇題

A pilot vessel on pilotage duty shall show identity lights （）.

A.at any time while underway
B.while at anchor
C.while alongside a vessel
D.All of the above

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單項(xiàng)選擇題

A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.

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

單項(xiàng)選擇題

A pilot vessel may continue to sound an identity signal if she is （）.

A.underway，but not making way
B.aground
C.being towed
D.not engaged in pilotage duty

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