| Navy | The Royal Navy |
| Type | Frigate |
| Class | River |
| Pennant | K 221 |
| Built by | George Brown & Co. (Greenock, Scotland): Parsons |
| Ordered | |
| Laid down | 29 Dec, 1941 |
| Launched | 27 Mar, 1943 |
| Commissioned | 29 Sep, 1943 |
| End service | |
| Loss position | |
| History | This was one of the few turbine engined River-class frigates. Scrapped in August 1957. Commanding Officers: A/Cdr. John Henry Eaden, DSC and 2 Bars, RN A/Cdr. Rodney Charles Vesey Thomson, DSC, RN (retired) |
| Noteable events involving Chelmer include: 6 Apr, 1944 |
