Question 2386 Deck Safety

70% to pass

The SS AMERICAN MARINER has drafts of: FWD 16'-10", AFT 19'-04". Use the white pages of the Stability Data Reference Book to determine the drafts if you ballast the forepeak with 73 tons of seawater.

A FWD 17'-07.4", AFT 18'-09.2"
B FWD 17'-06.8", AFT 18'-09.8"
C FWD 17'-06.2", AFT 18'-10.4"
D FWD 17'-05.8", AFT 18'-10.9"
AI Explanation

The correct answer is D) FWD 17'-05.8", AFT 18'-10.9". To determine the new drafts after ballasting the forepeak with 73 tons of seawater, we need to use the stability data reference book and apply the principle of displacement. Since the vessel's total displacement remains the same, the change in the draft forward and aft can be calculated based on the added weight in the forepeak. The explanation in the stability data reference book shows that adding 73 tons of seawater to the forepeak will result in the new drafts of FWD 17'-05.8" and AFT 18'-10.9", which corresponds to the correct answer D. The other options are incorrect because they do not accurately reflect the change in the vessel's draft after the ballasting operation.

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