| 1909 | C25 | Completed |
| 1909 | C26 | Completed |
| 1916 | E18 | E18 was sighted by a German naval aircraft off Memel during the morning, E18 dives. |
| 1916 | L7 | Laid Down |
| 1916 | L8 | Laid Down |
| 1940 | Seal (N37) | The Swedish merchant Torsten hits a mine and sinks. The mine was laid by the British submarine HMS Seal in the Kattegat on 4 May 1940. |
| 1945 | Trump (P333) | HMS Trump sinks a Japanese coaster with gunfire off the Sapudi Strait. |
| 1962 | Onyx (S21) | HMS Onyx ordered from HM Dockyard Chatham |
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Ronald Cohn / Jesse Russell
High Quality Content by WIKIPEDIA articles! HMS Truant (N68) was a T-class submarine of the Royal Navy. She was laid down by Vickers Armstrong, Barrow and launched on the 5 May 1939. This book was created using print-on-demand technology.
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