| Navy | The Royal Navy |
| Type | ASW Trawler |
| Class | |
| Pennant | FY 122 |
| Built by | Smiths Dock Co., Ltd. (South Bank-on-Tees, U.K.) |
| Ordered | |
| Laid down | |
| Launched | 20 Jan, 1939 |
| Commissioned | Sep, 1939 |
| Lost | 16 Dec, 1939 |
| Loss position | |
| History | Completed in February 1939 . Taken over by the Admiralty in September 1939. Displacement: 520 tons. Armament: 1 4" gun. HMS Sedgefly (Chief Skipper Royce William Stocks, RNR) was mined off Tynemouth, England on 16 December 1939. |
