Which shallow water effect will increase dramatically if you increase your ship's speed past its "critical speed"?
Official USCG Answer & Rule Citation
Correct Answer: Option D — Squatting
Squatting is the increase in draft caused by the pressure drop around a moving hull in shallow water. As speed increases toward the critical speed, the hydrodynamic sinkage becomes more pronounced, significantly increasing the risk of the vessel touching the bottom or grounding in restricted, shallow waterways.
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