| History | |
|---|---|
 United Kingdom | |
| Name | HMS TB81 |
| Builder | J. Samuel White, Cowes |
| Laid down | 1884 |
| Acquired | 1885 |
| Fate | Scrapped 1921 |
| General characteristics | |
| Displacement | 137 long tons (139 t) normal |
| Length | 153 ft 8.5 in (46.85 m) o/a |
| Beam | 17 ft 6 in (5.33 m) |
| Draught | 9 ft 6 in (2.90 m) |
| Installed power | 1,300 ihp (970 kW) |
| Propulsion | 1 × three-cylinder compound steam engine |
| Speed | 23.75 kn (27.33 mph; 43.99 km/h) |
| Complement | 25 |
| Armament |
|
HMS TB 81, originally named Swift, was a torpedo boat that served with the British Royal Navy. She was built in 1884–1885 by the shipbuilder J Samuel White as a private venture, and was purchased for the Royal Navy in 1885, and was one of the largest torpedo boats of her time. She remained in service into the First World War, when she was employed as a patrol boat, finally being sold for scrap in 1921.