The SS AMERICAN MARINER is ready to sail with the load shown in table ST- 0060 below. Use the white pages of The Stability Data Reference Book to determine the available GM.

Correct Answer: Option A — Available GM 4.24 ft

Available GM is derived by subtracting the effective center of gravity height (KG) from the transverse metacenter height (KM), incorporating free surface corrections from shipboard tables. For loading condition ST-0060, the Stability Data Reference Book establishes an available GM of 4.24 feet.