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- Q131 - Deck Safety: Stability Problems
193. Your vessel displaces 684 tons and measures 132'L by 31'B. What is the reduction in GM due to free surface if the fish hold (32'L by 29'B by 9'D) is filled with 2 feet of water? (Each foot of water weighs 26.5 tons)
The reduction in GM due to free surface is calculated as the free surface moment (ρI) divided by the total displacement, which includes the weight of the flood water. Using the given dimensions and water weight, the calculation yields a reduction of 2.52 feet.
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