Deck General USCG Q#4986 (Set 155)

What effect does bank suction have upon the hull of a vessel in shallow water?

Official USCG Answer & Rule Citation

Correct Answer: Option B — the hull has a lesser pressure on the land side of the stern

Bank suction develops along the quarter or stern of a vessel in shallow water because restricted flow creates a lower pressure area on the land side of the stern, pulling the stern toward the bank.

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