A pilot vessel on pilotage duty at night will show sidelights and a stern light （）.<br>A:when at anchor<br>B:only when making way<br>C:at any time when underway<br>D:only when the identifying lights are not being shown

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

出自：海船船员证

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