| Built By: | Cammell Laird (Mersey) |
| Build Group: | L1 |
| Fate: | Scrapped October 1930 |
1923 - Reserve Flotilla. Hong Kong.
| Length overall | 231 ft 1 inch |
| Beam | 23 ft 6 inch |
| Draught | 13 ft 3 inch |
| Displacement | 891 tons (surface) |
| 1074 tons (submerged) | |
| Diving Depth | 150 ft |
| Speed | Surface 17 knots (design) |
| Surface 17 to 17.5 knots (service) | |
| Submerged 10.5 knots (design) | |
| Submerged 10.5+ knots (service) | |
| No. of shafts | 2 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Endurance | Surface: 2800 miles at full power (design) |
| Surface: 2850 miles at full power or 3600 miles at half full power (service) | |
| Submerged: 14 miles at full power (design) | |
| Submerged: 14 miles at full power or 65 miles at 5 knots (service) | |
| Armament | 4 x 18 inch bow tubes |
| 2 x 18 inch beam tubes | |
| (10 torpedoes carried) | |
| 1 x 4 inch gun | |
| Complement | 3 Officers and 33 Ratings |
E 1 (I 81) |
|
| Class: | 1911 - 1924: E Class |
| Built By: | |
| Build Group: | E1 |
|
Fate: Deliberately scuttled in the Baltic off Helsingfors to prevent their capture by the German Army. The Care and Maintenance Party (under Lieutenant Downie) who carried out the scuttling also destroyed all of the stores and torpedoes of the Baltic Flotilla before returning home safely via Petrograd & Archangel. |
|
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.
21 pages added or updated in the last 3 month
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Please Note: Donations made using this option go directly to the site owner and not to the Submariners Association.
Thankyou for your support.
| Length overall | 231 ft 1 inch |
| Beam | 23 ft 6 inch |
| Draught | 13 ft 3 inch |
| Displacement | 891 tons (surface) |
| 1074 tons (submerged) | |
| Diving Depth | 150 ft |
| Speed | Surface 17 knots (design) |
| Surface 17 to 17.5 knots (service) | |
| Submerged 10.5 knots (design) | |
| Submerged 10.5+ knots (service) | |
| No. of shafts | 2 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Endurance | Surface: 2800 miles at full power (design) |
| Surface: 2850 miles at full power or 3600 miles at half full power (service) | |
| Submerged: 14 miles at full power (design) | |
| Submerged: 14 miles at full power or 65 miles at 5 knots (service) | |
| Armament | 4 x 18 inch bow tubes |
| 2 x 18 inch beam tubes | |
| (10 torpedoes carried) | |
| 1 x 4 inch gun | |
| Complement | 3 Officers and 33 Ratings |
E 1 (I 81) |
|
| Class: | 1911 - 1924: E Class |
| Built By: | |
| Build Group: | E1 |
|
Fate: Deliberately scuttled in the Baltic off Helsingfors to prevent their capture by the German Army. The Care and Maintenance Party (under Lieutenant Downie) who carried out the scuttling also destroyed all of the stores and torpedoes of the Baltic Flotilla before returning home safely via Petrograd & Archangel. |
|
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.
21 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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