USS Tigrone (SS-419)

USS Tigrone (SSR-419) in configuration as a Radar Picket
History
United States
Builder:	Portsmouth Naval Shipyard, Kittery, Maine
Laid down:	8 May 1944
Launched:	20 July 1944
Commissioned:	25 October 1944
Decommissioned:	January 1947
Recommissioned:	July 1948
Decommissioned:	October 1957
Recommissioned:	10 March 1962
Decommissioned:	27 June 1975
Struck:	27 June 1975
Nickname(s):	Tiger-One
Fate:	Sunk as a target off Cape Hatteras, 25 October 1976
General characteristics
Class and type:	Tench-class diesel-electric submarine
Displacement:	1,570 tons (1,595 t) surfaced 2,416 tons (2,456 t) submerged
Length:	311 ft 8 in (95.00 m)
Beam:	27 ft 4 in (8.33 m)
Draft:	17 ft (5.2 m) maximum
Propulsion:	4 × Fairbanks-Morse Model 38D8-⅛ 10-cylinder opposed piston diesel engines driving electrical generators 2 × 126-cell Sargo batteries 2 × low-speed direct-drive General Electric electric motors two propellers 5,400 shp (4.0 MW) surfaced 2,740 shp (2.0 MW) submerged
Speed:	20.25 knots (38 km/h) surfaced 8.75 knots (16 km/h) submerged
Range:	11,000 nautical miles (20,000 km) surfaced at 10 knots (19 km/h)
Endurance:	48 hours at 2 knots (3.7 km/h) submerged 75 days on patrol
Test depth:	400 ft (120 m)
Complement:	10 officers, 71 enlisted
Armament:	10 × 21-inch (533 mm) torpedo tubes 6 forward, 4 aft) 28 torpedoes 1 × 5-inch (127 mm) / 25 caliber deck gun Bofors 40 mm and Oerlikon 20 mm cannon

USS Tigrone (SS/SSR-419), a Tench-class submarine, was the only ship of the United States Navy to be named for the tigrone, a tiger shark found in tropical waters. Her keel was laid down on 8 May 1944 by the Portsmouth Navy Yard. She was launched on 20 July 1944 sponsored by Mrs. Charles F. Grisham, and commissioned on 25 October 1944 with Commander Hiram Cassedy in command.

Tigrone completed fitting out in mid-November and conducted training out of Portsmouth, New Hampshire, and New London, Connecticut, before departing the Submarine Base at New London on the last day of 1944. After ten days of training at the Fleet Sound School, the new submarine got underway on 16 January. Steaming via the Canal Zone, she paused for a week of training off Panama, then set her course for Hawaii, conducting extensive practice approach exercises with attack transport Riverside en route. On 16 February, she arrived at Pearl Harbor to prepare for her first war patrol.

On 9 March, she departed Oahu and steamed westward, arriving at Guam on 19 March. After a three-day pause to repair a main engine, she got underway on 21 March in company with submarines Bullhead and Blackfish, members of a combined attack group, led by her own commanding officer, Commander Hiram Cassedy. Joined by Seahorse, the submarines set their course for the South China Sea where they formed a scouting line in hopes of intercepting Japanese shipping.