Virgo, AKA-20, was an Andromeda-class attack cargo ship named for the constellation. Federal Shipbuilding at Kearny, New Jersey, laid her down on 9 March 1943 as a C2 hull, Maritime Commission hull 204, and launched her on 4 June 1943, Miss Sharman Douglas sponsoring. She was commissioned at the New York Navy Yard in July 1943, Commander Clayton H. McLaughlin in command. Wikipedia gives the date as 16 July, and NavSource gives 10 July.
She reached Wellington, New Zealand, on 6 October 1943 and trained at Efate. At Tarawa on 20 November she was straddled by four shells from a shore battery while preparing to land Marines on Betio, and landing resumed after air strikes and counter battery fire silenced it. She left Pearl Harbor on 22 January 1944 with Task Force 52 and arrived off Kwajalein on 31 January. DANFS records no untoward events in her five days there, and she left on 4 February.
She carried Army troops to Bougainville, Tanahmerah Bay and Aitape in the spring of 1944, loaded the 1st Provisional Marine Brigade at Guadalcanal, and landed it off Agat, Guam, on 21 July after waiting in reserve off Saipan and at Eniwetok. Her troops stormed ashore at Peleliu on the morning of 15 September, and she stayed in the Palaus for almost a month. She also took part in Iwo Jima, from 17 February to 2 March 1945, by NavSource's campaign listing.
She was decommissioned on 3 April 1958 and laid up in the Pacific Reserve Fleet. She was converted to an ammunition ship, AE-30, served as a commissioned ship for 22 years and 4 months in all, and was decommissioned again on 18 February 1971 at Mare Island. NavSource says she was sold for scrapping to a Taiwan firm on 19 November 1973. NavSource credits her with seven battle stars for World War II.