USS O1 (U.S. Navy) White Coffee Mug

The USS O1 refers to an American submarine that served in the United States Navy during World War I. This vessel was a member of the O-class, a group of six submarines designed for service in coastal waters. Commissioned in 1918, the USS O1 was the lead ship of its class and was notable for being one of the first submarines to use a diesel engine for surface navigation and an electric motor for submerged operations. The submarine saw active duty during World War I, but its service life was relatively short due to a series of mechanical issues. After being decommissioned in 1923, the USS O1 was sold for scrap in 1930. Today, the USS O1 stands as a significant historical artifact representing early advancements in submarine technology and the U.S. Navy's contributions during World War I.