Essex was an American whaling ship from Nantucket, Massachusetts, which was launched in 1799. On November 20, 1820, while at sea in the southern Pacific Ocean under the command of Captain George Pollard Jr., the ship was attacked and sunk by a sperm whale. About 2,000 nautical miles (3,700 km) from the coast of South America, the 20-man crew was forced to make for land in three whaleboats with what food and water they could salvage from the wreck.