Question 2273 Deck Safety

70% to pass

The TPI curve, one of the hydrostatic curves in a vessel's plans, gives the number of tons _______________.

A necessary to further immerse the vessel 1 inch at a given draft
B pressure per square inch on the vessel's hull at a given draft
C necessary to change the angle of list 1° at a given draft
D necessary to change trim 1 inch at a given draft
AI Explanation

The correct answer is A) necessary to further immerse the vessel 1 inch at a given draft. The TPI (Tons Per Inch) curve provides the number of tons required to immerse the vessel 1 inch deeper at a given draft. This information is essential for understanding how much weight or displacement is needed to change the vessel's draft, which is crucial for stability calculations and load planning. The other options are incorrect because they do not accurately describe the purpose of the TPI curve. Option B is about pressure, not weight; option C is about changing the angle of list, not draft; and option D is about changing trim, not draft.

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46 CFR Lifesaving Equipment USCG Marine Safety Center USCG National Maritime Center
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