| History | |
|---|---|
 United Kingdom | |
| Name | HMS Alyssum |
| Operator | Royal Navy |
| Builder | Earle's Shipbuilding and Engineering Company, Kingston upon Hull |
| Launched | 5 November 1915 |
| Fate | Mined 18 March 1917 |
| General characteristics | |
| Type | Minesweeper |
| Displacement | 1,250 long tons (1,270 t) |
| Length | 267 ft 9 in (81.61 m) o/a |
| Beam | 33 ft 6 in (10.21 m) |
| Draught | 11 ft 0 in (3.35 m) |
| Propulsion |
|
| Speed | 17 knots (31 km/h; 20 mph) |
| Complement | 79 men |
| Armament | 2 4.7-inch guns and 2 × 3-pounder (47 mm) AA guns |
HMS Alyssum was an Arabis-class minesweeping sloop of the British Royal Navy which served during the First World War. Alyssum was built in 1915 by Earle's Shipbuilding, and was used for minesweeping, escort and patrol duties in the North and Irish Seas. The sloop sank after hitting a German mine on 18 March 1917.