46 CFR 170.285 - Free surface correction for intact stability calculations.

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§ 170.285 Free surface correction for intact stability calculations.
(a) When doing the intact stability calculations required by this subchapter, the virtual increase in the vessel's vertical center of gravity due to liquids in tanks must be determined by calculating—
(1) For each type of consumable liquid, the maximum free surface effect of at least one transverse pair of wing tanks or a single centerline tank; and
(2) The maximum free surface effect of each partially filled tank containing non-consumable liquids.
(b) For the purpose of paragraph (a)(1) of this section, the tank or combination of tanks selected must be those having the greatest free surface effect.

Title 46 published on 2013-10-01

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