A vessel is underway with a work stage

A vessel is underway with a work stage rigged over the side. A seaman may work on the stage，but only when（）.

Awearing a life jacket
Bwearing a safety harness secured to the stage
Cwearing both a life jacket and a safety harness secured to the stage
Dthe vessel is not making way

参考答案

参考解析：

分类：救助合同与救助公约题库

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