USS Mackerel (SST-1)
| USS Mackerel (SST-1) | |
| History | |
|---|---|
| United States | |
| Name | 
 | 
| Namesake | As Mackerel: The mackerel, a sport and game fish | 
| Builder | General Dynamics Electric Boat, Groton, Connecticut | 
| Laid down | 1 April 1952 | 
| Launched | 17 July 1953 | 
| Sponsored by | Mrs. Charles R. Muir | 
| Commissioned | 9 October 1953 | 
| Decommissioned | 31 January 1973 | 
| In service | 9 October 1953, as USS T-1 (SST-1) | 
| Renamed | USS Mackerel (SST-1), 15 July 1956 | 
| Reclassified | From auxiliary submarine (AGSS-570) to training submarine (SST-1) prior to commissioning | 
| Stricken | 31 January 1973 | 
| Fate | Sunk as target 18 October 1978 | 
| General characteristics | |
| Class & type | T-1-class training submarine | 
| Displacement | 
 | 
| Length | 131 ft 3 in (40 m) | 
| Beam | 13 ft 7 in (4.14 m) | 
| Draft | 12 ft (3.7 m) | 
| Propulsion | diesel-electric, single screw | 
| Speed | |
| Complement | 2 officers, 12 enlisted men | 
| Armament | 1 × 21 inch (533 mm) torpedo tube | 
USS Mackerel (SST-1), originally known as USS T-1 (SST-1), was the lead ship of the T-1-class of training submarines. She was the second submarine of the United States Navy named for the mackerel, a common food and sport fish, and was in service from 1953 to 1973. She was one of the smallest operational submarines ever built for the U.S. Navy.