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- Q131 - Deck Safety: Stability Problems
86. You are on a Mariner class cargo vessel. Your drafts are: FWD 24'-00″, AFT 25'-08″. You wish to increase the calculated GM of 3.0' to 4.1'. What tanks should you ballast? (Use the white pages in the Stability Data Reference Book.)
Ballasting DB4 and DT6 lowers the ship's center of gravity (KG) sufficiently to increase the GM from 3.0' to 4.1', as determined by referencing the Stability Data Reference Book.
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