|Builder:||Cramp Shipbuilding Co., Philadelphia|
|Laid down:||21 April 1943|
|Launched:||14 May 1944|
|Commissioned:||27 March 1945|
|Decommissioned:||1 June 1946|
|Struck:||1 December 1971|
|Fate:||Scrapped, conning tower made into memorial at Naval Base Point Loma|
|Class and type:||Balao class diesel-electric submarine|
|Length:||311 ft 8 in (95.00 m)|
|Beam:||27 ft 3 in (8.31 m)|
|Draft:||16 ft 10 in (5.13 m) maximum|
|Range:||11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)|
|Test depth:||400 ft (120 m)|
|Complement:||10 officers, 70–71 enlisted|
Roncador (SS-301) was laid down 21 April 1943 by the Cramp Shipbuilding Co., Philadelphia; launched 14 May 1944; sponsored by Mrs. Thomas B. Klakring; and commissioned 27 March 1945, Comdr. Earl R. Crawford in command.
Following commissioning, Roncador conducted shakedown exercises into late May and on 26 May arrived at Port Everglades, Florida Based there for 2 months, she assisted in the development of antisubmarine warfare techniques. On 29 July she got underway for Panama and from 3 August through the end of the war conducted advanced training exercises off the Canal Zone. In late August, she proceeded to Guantanamo Bay, then, in mid-September, headed for the Pacific She arrived at Pearl Harbor on 3 October and remained in Hawaiian waters into the new year, 1946. On 3 January she got underway for San Francisco and inactivation.
Roncador was decommissioned 1 June 1946 and through the 1950s remained in the inactive fleet. In February 1960 she was taken out of mothballs, placed in reserve, and assigned to Naval Reserve training duty in the 11th Naval District. Redesignated AGSS-301 1 December 1962, she continued that duty, at the Long Beach Naval Station, in California, until 1 December 1971, at which time she was stricken from the Naval Vessel Register, and redesignated Miscellaneous Unclassified Submarine IXSS-301. Was to be used as a Museum at Ports 'O Call in San Pedro, California, but she was sold in September 1976 to Nicolai Joffe of Beverly Hills, California, and her conning tower was placed in the U.S. Navy Museum in Washington, D.C., prior to Roncador being scrapped. Her conning tower now resides at the Naval Base Point Loma, San Diego California On 1 October 1982 she was listed on the NVR as being disposed of by sale.
- Friedman, Norman (1995). U.S. Submarines Through 1945: An Illustrated Design History. Annapolis, Maryland: United States Naval Institute. pp. 285–304. ISBN 1-55750-263-3.
- Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775-1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 275–280. ISBN 0-313-26202-0.
- Bauer, K. Jack; Roberts, Stephen S. (1991). Register of Ships of the U.S. Navy, 1775–1990: Major Combatants. Westport, Connecticut: Greenwood Press. pp. 271–280. ISBN 978-0-313-26202-9.
- U.S. Submarines Through 1945 pp. 261–263
- U.S. Submarines Through 1945 pp. 305–311
- U.S. Submarines Through 1945 pp. 305-311
- Photo gallery of Roncador at NavSource Naval History