USS Plunger (SS-2)
| Plunger in 1902 | |
| History | |
|---|---|
| United States | |
| Name | USS Plunger | 
| Namesake | Plunger, a diver or daring gambler | 
| Builder | |
| Laid down | 21 May 1901 | 
| Launched | 1 February 1902 | 
| Commissioned | 19 September 1903 | 
| Decommissioned | 3 November 1905 | 
| Recommissioned | 23 February 1907 | 
| Stricken | 24 February 1913 | 
| Fate | Sold for scrapping 26 January 1922 | 
| General characteristics | |
| Class & type | Plunger-class submarine | 
| Displacement | 107 long tons (109 t) | 
| Length | 64 ft (20 m) | 
| Beam | 12 ft (3.7 m) | 
| Draft | 11 ft (3.4 m) | 
| Speed | 
 | 
| Complement | 7 | 
| Armament | 1 × 18 inch (450 mm) torpedo tube (five torpedoes) | 
USS Plunger (SS-2) was one of the earliest submarines of the United States Navy. She was the lead boat of her class and was later renamed A-1 when she was designated an A-type submarine. She is not to be confused with the experimental submarine Plunger which was evaluated by the U.S. Navy from 1898 to 1900, but not accepted or commissioned.