| 1907 | C17 | Laid Down |
| 1907 | C18 | Laid Down |
| 1933 | Rorqual (N74) | Completed |
| 1943 | Unruly (P49) | HMS Unruly fires two torpedoes against a Spanish merchant off Port Vendres, southern France. Both torpedoes miss. |
| 2005 | Artful (S121) | Laid Down |
| Undine (N48) | |
| Built By: | Vickers (Barrow) |
| Build Group: | U Group 1 |
| Fate: | Depth charged by German minesweepers M1201, M1204 and M1207 in Heligoland Bight and scuttled 7 Jan 1940 |
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