| Navy | The Royal Navy |
| Type | Minesweeper |
| Class | Algerine |
| Pennant | J 217 |
| Built by | Harland & Wolff Ltd. (Belfast, Northern Ireland) |
| Ordered | |
| Laid down | 14 Apr, 1942 |
| Launched | 9 Dec, 1942 |
| Commissioned | 22 Apr, 1943 |
| Lost | 22 Aug, 1944 |
| Loss position | 50.13N, 00.44W (See a map) |
| History | Commissioned as HMS Rattler on 22 April 1943, renamed HMS Loyalty in June 1943.
On 22 August 1944 U-480
torpedoed and sank HMS Loyalty (Lt.Cdr. James Edward Maltby, RNR) in the English Channel in position 50º09'N, 00º41'W. Commanding Officers: Lt.Cdr. James Edward Maltby, RNR Hit by U-boat |
| Career notes | Renamed HMS Loyalty in June 1943. |

