What should you apply to a fathometer reading to determine the depth of water?（）<br>A:Subtract the draft of the vessel<br>B:Add the draft of the vessel<br>C:Subtract the sea water correction <br>D:Add the sea water correction

What should you apply to a fathometer reading to determine the depth of water?（）
A:Subtract the draft of the vessel
B:Add the draft of the vessel
C:Subtract the sea water correction
D:Add the sea water correction

出自：海船船员证

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