Let’s first decide on whether the ship goes up or down. Salt water is denser than fresh water, so it takes less salt water displacement to provide the buoyant force. Therefore, the ship should ride higher in salt water than in fresh.
The amount of freshwater displaced by the ship is
and the amount of saltwater displaced is
The displacement difference is
With a cross-section of 12,000 square feet, the ship will ride
or about 7 inches higher in the salt water.
Last modified: January 22, 2009 at 8:32 PM.