| 1909 | C33 | Laid Down |
| 1909 | C34 | Laid Down |
| 1911 | D2 | Completed |
| 1916 | B9 | Attacked by Austrian aircraft. |
| 1942 | Unrivalled (P45) | HMS Unrivalled torpedoes and sinks the German auxiliary submarine chasers UJ 2201/Bois Rose and UJ 2204/Boral off the Gulf of Picarenzi, Italy. |
| 1943 | Tapir (P335) | Laid Down |
| 1945 | Spark (P236) | HMS Spark sinks a Japanese coaster with gunfire in the Flores Sea. |
| 1945 | Auriga (P419) | Launched |
| The Dolphin Code | Read |
| The Dolphin Code has earned a solid international reputation, and is now well known within Western Submarine navies. It has even been rumoured that the late Soviet Naval Air Force used the code on occasion. The Royal Australian Navy additions were added in 1997 and serve to attest to the popularity of the DOLPHIN CODE | |
Anthony Preston
The year 2001 records the 100th anniversary of the foundation of the Submarine Service, and Antony Preston presents a day-by-day account of life in the service. In 1901, Holland One, the Royal Navy's first submarine, fitted with a single torpedo tube, was born at Vickers-Armstrong amidst great controversy, in an era when the submarine was regarded as the weapon of the weaker power
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