| Navy | The Royal Navy |
| Type | Rescue Tug |
| Class | Saint |
| Pennant | W 25 |
| Built by | Napier & Miller (Old Kirkpatrick, Scotland) |
| Ordered | |
| Laid down | |
| Launched | , 1918 |
| Commissioned | 28 Dec, 1918 |
| Lost | 28 Dec, 1942 |
| Loss position | 32.37N, 20.22E (See a map) |
| History | On 28 December 1942 the British tug HMS St. Issey (Lt. J.H.W. Howe, RNR) was torpedoed and sunk by U-617 off Benghazi, Lybia in position 32º37'N, 20º22'E. Hit by U-boat |