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- Q131 - Deck Safety: Stability Problems
93. What is the reduction in metacentric height due to free surface when a tank 60 ft. wide and 60 ft. long is partially filled with saltwater? (The vessel's displacement is 10,000 tons.)
The reduction in metacentric height due to free surface is calculated using the formula FSC = (L * B3) / (420 * Δ), where L is tank length, B is tank breadth, and Δ is ship displacement. Substituting the given values (L = 60 ft, B = 60 ft, Δ = 10,000 tons) yields a reduction of approximately 3.09 feet.
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