USS Amphion (AR-13) was the lead ship

Lead ship

The lead ship or class leader is the first of a series or class of ships all constructed according to the same general design. The term is applicable military ships and larger civilian craft.-Overview:...

 of her class of repair ship built for the United States Navy

United States Navy

The United States Navy is the naval warfare service branch of the United States Armed Forces and one of the seven uniformed services of the United States. The U.S. Navy is the largest in the world; its battle fleet tonnage is greater than that of the next 13 largest navies combined. The U.S...

 during World War II

World War II

World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. The second U.S. Navy vessel to be named , she was not commissioned until January 1946, five months after the end of the war. She was decommissioned in September 1971 and transferred to the Imperial Iranian Navy as IIS Chahbahan. She was purchased outright by Iran in March 1977. After the 1979 Iranian Revolution she remained in service with the Islamic Republic of Iran Navy

Islamic Republic of Iran Navy

The Iranian Navy has traditionally been the smallest branch of Iran's armed forces and is designed mainly for securing its own ports and coast.- Overview :...

 through at least 1985.