| Name: | L53 |
| Type: | Submarine |
| Keel: | 19/06/1917 |
| Launched: | 12/08/1919 |
| Completed: | 06/01/1925 |
| Builder: | Armstrong, Whitworth & Co |
| Yard: | High Walker |
| Yard Number: | 924 |
| Dimensions: | 960disp surf, 1150disp subm, 235.0 x 23.5 x 13.0ft |
| Engines: | 2 x Oil engines, 4SCSA, Vickers-Admiralty type, 4cyl (14.5 x 15ins), 1200bhp; |
| Plus 2 x Electric motors, 800bhp | |
| Engines by: | Vickers Ltd |
| Propulsion: | 2 x Screws, 17.0knots surf, 10.5knots subm |
| Construction: | Steel |
| Armament: | 6 x 21.0ins bow torpedo tubes, 2 x 1 x 4.0ins guns |
| History: | |
| 18/01/1921 | British Royal Navy |
| 23/01/1939 | Broken up |
| Comments: | 16/09/1920: Left the Tyne under tow to Chatham |
| 06/01/1925: Completed by Chatham Naval Dock Yard | |
| 23/01/1939: Broken up TW Ward at Briton Ferry |
Photo courtesy of Kevin Blair