Named after an Indian tribe in northeastern Argentina along the Pelcomayo River.

 

(AT-86: Displ. 1,240T, L. 205’, Beam 38’6”, Draft 14’3”, Speed 16kt, Complement 97, Armament 1 – 3”, 240mm, 2 – 20mm,  Class – Navajo

 

Keel laid 27 June 1942 by United Engineering Co., San Francisco, California; Launched 14 October 1942; Sponsored by Miss Evelyn B. Piper; and Commissioned 29 May 1942, Lt. William G. Baker in command.

            Following shakedown off San Diego, Mataco early proved her endurance when she towed a floating drydock 47 days nonstop from San Francisco to Brisbane, Australia, arriving 1 October 1943. This passage accounted for 6,800 of 55,000 miles steamed for her first year. She underwent her first air attack in the Ellis Islands 17 November and 3 days later stood by to aid ships invading the Gilberts. Training and target towing in Hawaiian waters preceded her joining TF 53 fir the invasion of the Marshalls. She stood off Kwajelein 31 January 1944 to screen transports, to free beached landing craft, and to send her divers to recover documents from sunken Japanese ships. She carried out escort and towing missions in the Marshalls and to the Gilberts, Marianas and Pearl Harbor until 3 December, when Ulithi became her base for the next six months.  In January 1945 she carried out a major salvage assignment at Leyte. In February she made a tow to Saipan and Guam, and in April she joined the assault on Okinawa. There on 2 April, an aerial torpedo passed harmlessly beneath her keel.

            Redesignated ATF-86 on 15 May 1944, she pitched in on the enormous amount of salvage work to be done around Okinawa, and at war’s end, began tows to Japan. She returned home as she had come to war, towing a drydock from Guam via Pearl Harbor to San Francisco, where she moored 25 July. Five months later, 19 December, she returned to the Western Pacific on the first of the annual deployments to the Seventh Fleet which alternated with west coast and Alaskan duty. She was in the Philippines at the outbreak of the Korean conflict and after investigating smuggling in the Ryukyus, sailed to Korea where she performed combat salvage and air-sea rescue missions beginning with the 15 September Inchon landings. In mid-October she rounded the peninsula, extending those services to Wonsan. Target towing missions in Japan and between Guam and Pearl Harbor completed this tour, and she arrived in San Diego 12 August 1951.

            Mataco began her next Western Pacific deployment 10 January 1952 and during the next 14 months supported United Nations forces in Korea, in October twice rendering fire support at Pippa Katsu. The next year, she reported for 3 continuous years of Far Eastern service, and from 1956 to 1966, made five additional 7th Fleet cruises as well as serving in Alaskan waters.

            On 29 February 1967 she began a tour which brought her the first time to the coast of embattled Vietnam. On 21 April Mataco brought VRF‑890 in tow to Vung Tau, and in may took up trawler surveillance on Yankee Station. After towing a damaged LST from Da Nang to Guam in July, she trained Korean navy men in salvage in Chinhae, the returned to San Diego 6 November. The hard-working fleet tug remained on active unit of the Pacific Fleet into the 1970s. She was decommissioned and later struck from the Naval Register 30 September 1977.

            Mataco received five battle stars for World War II service and four for Korean service.