The SS AMERICAN MARINER is partially loaded with a GM of 2.9 feet and drafts of: FWD 17'-10", AFT 19'-04". Use the white pages of the Stability Data Reference Book to determine what tanks you should ballast to increase the GM to 3.9 feet.

Correct Answer: Option B — Tanks: DB4, DT6

Evaluating the SS AMERICAN MARINER stability tables at the specified partial load drafts establishes that ballasting tanks DB4 and DT6 adjusts the vertical center of gravity to successfully increase the metacentric height from 2.9 to 3.9 feet.