The USS Onslow (AVP-48) was a United States Navy Barnegat-class seaplane tender constructed during World War II, serving from 1943 to 1947 and then again from 1951 to 1960. Laid down on 18 May 1942 by Lake Washington Shipyard in Houghton, Washington, she was launched on 20 September 1942 and commissioned on 22 December 1943. The vessel measured approximately 314 feet in length, with a beam of about 41 feet, and was equipped to support seaplane operations, including tending and rescue duties. During her wartime service, Onslow played a vital role in numerous Pacific campaigns. Her first notable operation was on 20 April 1944, when she participated in the seizure of Ujelang in the Marshall Islands, supporting the landing of U.S. Army troops and repelling Japanese air attacks. She subsequently operated at Kwajalein, Eniwetok, and Saipan, providing seaplane tending services, rescuing downed pilots, and participating in the invasion of Palau and Okinawa. Notably, she was involved in the rescue of a downed fighter pilot off Saipan and engaged in anti-aircraft defense during Japanese air raids. In the Battle of Okinawa, she helped establish and operate a seadrome, often under heavy Japanese air attacks, and assisted in the surrender of Japanese troops on nearby islands. Onslow also undertook various rescue and recovery missions, including towing a damaged Mariner flying boat 275 miles to Ulithi and participating in combat against Japanese midget submarines. She earned four battle stars for her WWII service. Following the war, she supported Operation Magic Carpet, repatriating U.S. military personnel, and conducted occupation duties until her decommissioning in June 1947. Reactivated for the Korean War, Onslow served in the Western Pacific, primarily stationed at Iwakuni, Japan, and earned one additional battle star. She continued to serve in various capacities along the U.S. West Coast and in Hong Kong until her final decommissioning on 22 April 1960. Subsequently sold to the Philippine Presidents Line, she was used as a commercial ferry and, during the Vietnam War, assisted in evacuating refugees from South Vietnam. Her service record highlights her significance as a versatile support vessel in multiple major conflicts and operations across the Pacific theater.

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