| Built By: | Markham and Co (Derbyshire) |
| Build Group: | XE |
| Fate: | Went to Australia 1952 |
Unofficially named Excitable
| 07-12-1944 | Completed |
| Length overall | 51 ft 7 inch |
| Beam | 8 ft 6 inch (with charges) |
| 5 ft 9 1/2 inch (without charges) | |
| Displacement | Without Charges: 27 tons (surface) |
| Without Charges: 29 1/2 tons (submerged) | |
| Diving Depth | 300 ft |
| Speed | With Charges: 6.5 knots (surface) |
| With Charges: 5 knots (submerged) | |
| No. of shafts | 1 |
| Armament | 2 x 2-ton side charges, Limpet mines |
| Endurance | Surface: 1320 miles at 4 knots (with charges) |
| Surface 1860 miles at 4 knots (without charges) | |
| Submerged: 80 miles at 2 knots (with charges) | |
| Complement | 4 |
| Class: | 1936 - 1958: U Class |
| Built By: | Vickers (Barrow) |
| Build Group: | U2 |
| Fate: | |
| Scrapped 22vd January 1946 at Briton Ferry. | |
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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| Length overall | 51 ft 7 inch |
| Beam | 8 ft 6 inch (with charges) |
| 5 ft 9 1/2 inch (without charges) | |
| Displacement | Without Charges: 27 tons (surface) |
| Without Charges: 29 1/2 tons (submerged) | |
| Diving Depth | 300 ft |
| Speed | With Charges: 6.5 knots (surface) |
| With Charges: 5 knots (submerged) | |
| No. of shafts | 1 |
| Armament | 2 x 2-ton side charges, Limpet mines |
| Endurance | Surface: 1320 miles at 4 knots (with charges) |
| Surface 1860 miles at 4 knots (without charges) | |
| Submerged: 80 miles at 2 knots (with charges) | |
| Complement | 4 |
| Class: | 1936 - 1958: U Class |
| Built By: | Vickers (Barrow) |
| Build Group: | U2 |
| Fate: | |
| Scrapped 22vd January 1946 at Briton Ferry. | |
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.
20 pages added or updated in the last 3 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.
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