USS Massachusetts (Pensacola) - the Nation’s oldest battleships, commissioned in 1896 but became obsolete 20 years later due to a significant design flaw - it was extremely unstable, even in calm seas. During World War I, used for gunnery practice ship, decommissioned in 1919 and sunk in 1921 during target practice. The hull was stripped for scrap metal during the 1940s but the wreck is in relatively good condition. Located 1.5 nautical miles south-southwest of Pensacola Pass, in 26-30 ft. of water. There are special diving instructions at this site and a prohibition against penetrating the hull.