Deck General USCG Question #4645 (Set 149)

After jacking down your liftboat you have an unexpected list. You find that the only cause of this list must be a flooded leg. Raising the flooded leg further would adversely affect the boats stability by __________.

Official USCG Answer & Rule Citation

Correct Answer: Option A — raising the KG and increasing the draft which may put you in an unsafe operating condition

Raising a flooded leg further elevates the vertical center of gravity (KG) and increases operating draft, severely degrading transverse stability, decreasing freeboard, and potentially leading to a capsize or unsafe operational condition per stability criteria.

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