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Career
Ordered:
Laid down:	21 August 1944
Launched:	15 December 1944
Commissioned:	14 April 1945
Decommissioned:	1 August 1970
Fate:	sold for scrap
Stricken:	1 August 1970
General characteristics
Displacement:	1570 tons surfaced, 2414 tons submerged
Length:	311 feet 8 inches
Beam:	27 feet 4 inches
Draft:	15 feet 3 inches
Propulsion:
Speed:	20 knots surfaced, 9 knots submerged
Range:
Complement:	76 officers and men
Armament:	one six-inch gun, two 20 mm cannon, ten 21-inch torpedo tubes
Motto:

USS Medregal (SS-480), a Tench-class submarine, was the only ship of the United States Navy to be named for the medregal, a streamlined, fast-swimming, bluish-colored fish of the jack family which abounds in waters of the West Indies and in the Atlantic as far north as the Carolinas.

Medregal's keel was laid down by the Portsmouth Naval Shipyard on 21 August 1944. She was launched on 15 December 1944, sponsored by Mrs. A. H. Taylor; and commissioned on 14 April 1945, Commander William M. Wright in command with E. C. Linden as Exec.Officer. Medregal departed Portsmouth in April of 1945 A collision with a Destroyer Escort off the north coast of Panama while submerged, resulted in major damage to the periscope shears and radar, requiring a return to Portsmouth just at the time that Germany surrendered. After repairs and Air/Sea Rescue modifications Medregal departed New London, Connecticut, on 16 June, and steamed to participate in final operations in the Pacific against the Japanese. The surrender of Japan halted her long Pacific voyage and she returned to the Canal Zone, thence Key West, Florida, for operations with Submarine Squadron 4.

From late 1945 to mid-1957 Medregal operated out of Key West, training Reserves, supporting activities of the Fleet Sonar School, and taking part in antisubmarine warfare exercises. Her cruises sent her along the east coast from Florida to Virginia, into the Gulf of Mexico and the Caribbean Sea, and to operating areas in the western Atlantic. Periodically she deployed to Guantanamo Bay and Havana, Cuba, as well us to Puerto Rico and islands of the West Indies. From March to November 1952 she underwent conversion to a Fleet Snorkel submarine at Charleston, South Carolina.

On 17 June 1957 Medregal entered Charleston Naval Shipyard for conversion to a missile-guidance submarine. She completed overhaul 22 November, thence steamed to Norfolk, Virginia, for operations with Submarine Squadron 6. During the next 18 months she participated in intermittent missile-evaluation projects in the Caribbean off the Virgin Islands and in the Atlantic out off Puerto Rico.

Assigned to Submarine Squadron 3 on 10 July 1959 Medregal departed Norfolk 25 July and steamed to Pearl Harbor, arriving 24 August. She served in Hawaiian waters until sailing 9 January 1960 to the Far East, arriving Yokosuka on 26 January. During the next five months she conducted training and evaluation exercises with units of the Seventh Fleet, and ranged the western Pacific from Japan to the Philippines.

Returning to Pearl Harbor 1 July, Medregal resumed type and squadron operations between Hawaii and the West Coast. Between September 1961 and March 1962 she made a second deployment with the Seventh Fleet. In October she steamed to the West Coast for ASW and Reserve training out of Puget Sound. She returned to Pearl Harbor in mid-December and for the next two years she maintained her pattern of operations between the Hawaiian Islands and the West Coast.

Medregal departed Pearl Harbor for WestPac in mid-April 1965. Steaming first to Australia, she visited Brisbane, Sydney, and Melbourne, and participated in the commemoration of the Battle of the Coral Sea. Thence, in May she sailed to the Philippines for operations out of Subic Bay until returning to San Francisco, California, the end of August.

Back in Pearl Harbor late in 1965, Medregal operated their until departure for Japan 2 July 1966. After reaching Yokosuka on 15 July, she joined Seventh Fleet aircraft carriers and destroyers for ASW operations in the western Pacific, and readiness and alert maneuvers with ships of the Republic of China Navy (based in Taiwan). During the rest of the year she continued to support peacekeeping operations in the troubled Far East.

In January 1967, Medregal returned to her home port in Hawaii where she resumed her type training and squadron exercises with SubRon 1. She continued duty out of Pearl Harbor until 1 May when she was assigned to SubRon 3 out of San Diego, California. On 1 May 1967, Medregal was reclassified with hull classification symbol AGSS-480.

Medregal was decommissioned and struck from the Naval Vessel Register on 1 August 1970 and sold for scrapping 13 June 1972.

This article includes text from the public domain Dictionary of American Naval Fighting Ships.