On a vessel of 7000 tons displacement, a tank 35 ft. long, 30 ft. wide and 46 ft. deep is half filled with liquid cargo (S.G. 0.923) while the vessel is floating in saltwater (S.G. 1.026). What is the free surface constant for this tank?

Correct Answer: Option B — 2024

Calculating the free surface constant requires tank dimensions (35x30 ft), liquid specific gravity (0.923), and saltwater density (1.026). Applying the standard inertial formula (L x B^3 / 12) multiplied by the density ratio yields 2024.