Safety & Environmental Protection (Deck) USCG Question #2515 (Set 76)

The SS AMERICAN MARINER is partially loaded with a GM of 2.6 feet and drafts of: FWD 13'-07", AFT 15'-01". Use the white pages of the Stability Data Reference Book to determine what tanks you should ballast to increase the GM to 3.4 feet.

Official USCG Answer & Rule Citation

Correct Answer: Option A — Tanks: DB6, DB7, DT7

Analysis of the light draft loading tables in the stability manual shows that ballasting tanks DB6, DB7, and DT7 is required to lower the vertical center of gravity enough to transition the GM from 2.6 to 3.4 feet.

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