Deck General · Shiphandling — Squat Awareness
In shiphandling, reducing speed in shallow water is important because excessive speed there:
- AIncreases sinkage and trim change (bodily settling) that can reduce under-keel clearance✓ Correct
- BImproves steering only
- CSaves fuel
- DHas no effect in shallow water
Explanation
In shallow or confined water a vessel settles bodily and changes trim as speed increases, cutting under-keel clearance and degrading handling. Slowing down restores clearance and control; handlers plan speed against charted depths.
Authority: Bowditch; Knight's Modern Seamanship
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