| Navy | The Royal Navy |
| Type | MS Trawler |
| Class | |
| Pennant | FY 850 |
| Built by | Hawthorns & Co., Ltd. (Leith, U.K.) |
| Ordered | |
| Laid down | |
| Launched | , 1918 |
| Commissioned | Mar, 1942 |
| End service | |
| Loss position | |
| History | Completed on 9 May 1918. Taken over by the Admiralty in March 1942. Displacement: 204 tons. Armament: 1 3pdr gun. Returned to her owner in April 1945. |
| Noteable events involving Tumby include: 19 Dec, 1939 |