| Name: | K 12 |
| Type: | Submarine |
| Keel: | 21/10/1915 |
| Launched: | 23/02/1917 |
| Completed: | 09/1917 |
| Builder: | Armstrong, Whitworth & Co Ltd |
| Yard: | Elswick |
| Yard Number: | 903 |
| Dimensions: | 2600disp subm, 1883disp surf, 334.0 x 26.5 x 16.0ft |
| Engines: | 2 x Steam turbines, Parsons type, 10500hp; 4 x electric motors, 1400hp |
| Engines by: | Wallsend Slipway & Engineering Co Ltd, Wallsend |
| Propulsion: | 2 x Screws, 9.5knots subm, 24.0knots surf |
| Construction: | Steel |
| Armament: | 2 x 1 x 4.0ins & 1 x 3.0ins guns; 8 x 1 x 18.0ins torpedoes, (4 x bow, 4 x beam) |
| History: | |
| 09/1917 | British Royal Navy |
| 23/07/1926 | Broken up |
| Comments: | Member of the Admiralty K Class of steam powered fleet submarines |
| Launched at Elwick yard but completed at High Walker yard | |
| 23/07/1926: Sold for breaking up to Alloa Shipbreaking Ltd, Charlestown | |
| Initial breaking at Rosyth and then the hulk transferred to Charlestown | |
| Admiralty selling price £8635 |
Above photo is copyright of the Imperial War Museum
Above photo is courtesy of Photoship
Above photo is courtesy of Photoship