She was towed to the mothball fleet in nearby Suisun Bay. In 1990, "Iowa" was decommissioned for the last time and placed in the mothball fleet. The ship would be scrapped in 1959 after years in mothball. She was the only Liberty Ship to leave the mothball fleet under her own power. She was scrapped in 1959 after years in mothball. After the war "West Virginia" was placed in mothball and scrapped in 1959. After World War II, Lee Field became a base for the mothball fleet. Kasar's decision to mothball Cosmos infuriated Alcorn, and he left the company.