The USS Banner (AKL-25, later AGER-1) was a vessel with a diverse service history, originally constructed as a U.S. Army FS-345, a Design 381 coastal freighter built by Kewaunee Shipbuilding and Engineering Corporation in Wisconsin. Launched and commissioned on 26 July 1944, the ship served in the Southwest Pacific during the final stages of World War II, operating through Guam to Manila, where she was anchored from July to August 1945. During the war, she was crewed by the U.S. Coast Guard and assigned to the Southwest Pacific Area, supporting Allied operations. Following her wartime service, the vessel was acquired by the U.S. Navy on 1 July 1950, initially placed in service with the Military Sea Transportation Service, and designated T-AKL-25 by 20 August 1952. She was renamed USS Banner on 5 September 1952 and commissioned at Pearl Harbor on 24 November 1952 as AKL-25. Her primary role was supplying advanced Pacific bases, including locations in the Mariana Islands, Chichijima, and Hahajima, often making trips to Japan and Hong Kong. In 1965, USS Banner underwent a significant transformation at Puget Sound Naval Shipyard, converting from a cargo ship to an "environmental research ship," which in practice meant conversion into a signals intelligence (SIGINT) platform. She was redesignated AGER-1 on 1 June 1967 and operated out of Yokosuka, Japan, alongside other SIGINT ships such as USS Pueblo (AGER-2) and USS Palm Beach (AGER-3). Banner's new mission involved gathering signals intelligence during the Cold War era. Her service concluded in 1969 when she was deemed unfit for further duty. She was decommissioned at Yokosuka on 14 November 1969, struck from the Naval Vessel Register the same day, and subsequently sold for scrapping to Mitsui & Co. in Japan on 5 June 1970. The USS Banner's transition from a cargo vessel to an electronic intelligence platform underscores her maritime significance during Cold War operations.

This description has been generated using GPT-4.1-NANO based on the Vessel's wikidata information and then modified by ShipIndex.org staff.