| Navy | The Royal Navy |
| Type | Boom defence vessel |
| Class | Net |
| Pennant | Z 05 |
| Built by | Blyth Shipbuilding & Drydock Co. Ltd. (Blyth, U.K.) |
| Ordered | |
| Laid down | |
| Launched | 8 Nov, 1938 |
| Commissioned | 16 Mar, 1939 |
| Lost | 21 Dec, 1939 |
| Loss position | 56.05N, 02.32W (See a map) |
| History | HMS Bayonet (T/Boom Skipper A. Lamont, RNR +) was mined and sunk in the Firth of Forth, Scotland in approximate position 56º05'N, 02º32'W on 21 December 1939. Possibly the mine was from a defensive British field but most like one of those laid by the German submarine U-21 on 4 November 1939.
Commanding Officer: Hit by U-boat |
