A、one sidelight and the masthead light are visible
B、the vessels will pass closer than half a mile
C、both vessels sound one prolonged blast
D、both sidelights and masthead light(s) are visible
A、one sidelight and the masthead light are visible
B、the vessels will pass closer than half a mile
C、both vessels sound one prolonged blast
D、both sidelights and masthead light(s) are visible
时间:2022-01-03 00:30 关键词: 航路指南
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