The Plimsoll mark on a vessel is used to（）.<br>A:align the vessel's tailshaft<br>B:determine the vessel's trim<br>C:determine the vessel's freeboard<br>D:locate the vessel's centerline

The Plimsoll mark on a vessel is used to（）.
A:align the vessel's tailshaft
B:determine the vessel's trim
C:determine the vessel's freeboard
D:locate the vessel's centerline

出自：海船船员证

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