Deck Rules (Supplementary) USCG Question #2506 (Set 9)

The SS AMERICAN MARINER is ready to sail with the load shown in table ST- 0149 below. Use the white pages of The Stability Data Reference Book to determine the available GM.

Official USCG Answer & Rule Citation

Correct Answer: Option A — Available GM 3.0 ft

Table ST-0149 provides the specific deadweight breakdown. Computing the vertical moment summation and cross-referencing the SS AMERICAN MARINER stability data in the white pages produces an available metacentric height (GM) of 3.0 feet.

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