| 1909 | C 25 (I 55) | Completed |
| 1909 | C 26 (I 56) | Completed |
| 1916 | E 18 (I 98) | E18 was sighted by a German naval aircraft off Memel during the morning, E18 dives. |
| 1916 | L 7 | Laid Down |
| 1916 | L 8 | Laid Down |
| 1940 | Seal (N 37) | 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 (P 333) | HMS Trump sinks a Japanese coaster with gunfire off the Sapudi Strait. |
| 1962 | Onyx (S 21) | HMS Onyx ordered from HM Dockyard Chatham |
Early in 1915 an experiment took place in the Firth of Forth of a C class boat being towed submerged by a powerful tug. The submarine was towed along at various depths, using a towing slip to enable her, at the opportune moment, to release herself and so make the attack. It was C27 which carried out these experiments which proved quite a success, she and C19 were sent to Aberdeen for actual operations.
The 'X' stood for experimental, but it might equally have meant extraordinary, exotic or extravagant, as this giant submarine attracted superlatives. Built in the early 1920s, it was the world's largest, most heavily armed, and deepest diving submersible of the day. A controversial project conceived behind the backs of politicians, X.1 would remain an unwanted stepchild. As British diplomats attempted to outlaw the use of submarines as commerce raiders, the Admiralty was building the world's most powerful corsair submarine, designed to destroy entire convoys of merchant ships.
This book explores the historical background of submarine cruisers, the personalities involved in X.1's design and service, the spy drama surrounding her launch, the treason trial of a Royal Navy submarine commander, the ship's checkered career, and her political demise. Despite technical successes, the X.1 became the target of a misinformation campaign aimed at persuading foreign naval powers that the cruiser submarine did not work. While the myth of her failure persists even today, it was ignored by other navies, who went on building submarine cruisers of their own. The book analyses the submarine cruisers built by the US, French, and Japanese navies, as well as the projected German copy of X.1, the Type XI U-Boat.
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Early in 1915 an experiment took place in the Firth of Forth of a C class boat being towed submerged by a powerful tug. The submarine was towed along at various depths, using a towing slip to enable her, at the opportune moment, to release herself and so make the attack. It was C27 which carried out these experiments which proved quite a success, she and C19 were sent to Aberdeen for actual operations.
The 'X' stood for experimental, but it might equally have meant extraordinary, exotic or extravagant, as this giant submarine attracted superlatives. Built in the early 1920s, it was the world's largest, most heavily armed, and deepest diving submersible of the day. A controversial project conceived behind the backs of politicians, X.1 would remain an unwanted stepchild. As British diplomats attempted to outlaw the use of submarines as commerce raiders, the Admiralty was building the world's most powerful corsair submarine, designed to destroy entire convoys of merchant ships.
This book explores the historical background of submarine cruisers, the personalities involved in X.1's design and service, the spy drama surrounding her launch, the treason trial of a Royal Navy submarine commander, the ship's checkered career, and her political demise. Despite technical successes, the X.1 became the target of a misinformation campaign aimed at persuading foreign naval powers that the cruiser submarine did not work. While the myth of her failure persists even today, it was ignored by other navies, who went on building submarine cruisers of their own. The book analyses the submarine cruisers built by the US, French, and Japanese navies, as well as the projected German copy of X.1, the Type XI U-Boat.
13 pages added or updated in the last 2 month
Please help to maintain this site by reporting any Errors, Broken Links, Information or Site Issues on this page using this button
If you find this site useful, please consider supporting my work with a small Donation.
Please Note: Donations made using this option go directly to the site owner and not to the Submariners Association.
Thankyou for your support.