单选题When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.Athe same ratioBmore chain for each fathom of depthCless chain for each fathom of depthDtwo anchors with the same ratio of chain
单选题
When anchoring，good practice requires 5 to 7 fathoms of chain for each fathom of depth. In deep water you should use（）.
A
the same ratio
B
more chain for each fathom of depth
C
less chain for each fathom of depth
D
two anchors with the same ratio of chain
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