Your vessel draws 8 feet. A charted sounding reads 9 feet and the predicted height of tide is +2 feet. What is your underkeel clearance?

A. 1 foot
✓ 3 feetCorrect
C. 2 feet
D. 0 feet

Why B is correct

Actual depth = 9 + 2 = 11 feet. Underkeel clearance = actual depth minus vessel draft = 11 - 8 = 3 feet. Failing to add the tide correction before subtracting draft is a common error.

Cited:Bowditch Ch. 9 §904

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Your vessel draws 8 feet. A charted sounding reads 9 feet and the p… — USCG Exam Practice · CaptainsGround