| Built By: | Chatham Dockyard (Medway) |
| Build Group: | D |
| Fate: | Scrapped 19th December 1921. |
1914: 8th Flotilla Portsmouth, HMS Maidstone and Adamant
1914: 8th Flotilla. HMS Maidstone, Harwich.
Had an encounter with a submerged German U-boat in May of 1918 which resulted with her periscopes being damaged.
| 14-02-1910 | Laid Down |
| 14-01-1911 | Launched |
| 14-12-1911 | Completed |
| 10-02-1918 | D7 had a frightening experience when she was depth-charged by the destroyer HMS Pelican in a case of mistaken identity. Considerable damage was caused during the attack. Eventually the boat was able to surface and identify herself |
| Length overall | 164 ft |
| Beam | 13 ft 10 7/8 inch |
| Depth | 13 ft 11 1/8 inch |
| Displacement | Surface 495 tons |
| Submerged 620 tons | |
| Diving Depth | 100 ft |
| Speed | Surface 14.5 knots (design) |
| Surface 14.5 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 9+ knots (service) | |
| No. of shafts | 2 |
| Propeller | 3 blades, 5 ft diameter |
| Armament | 2 x 18 inch bow tubes |
| 1 x 18 inch stern tube | |
| (6 torpedoes carried) | |
| Endurance | Surface: 2500 miles at 10 knots (design) |
| Surface: 2500 miles at 11.5 knots (service) | |
| Submerged: 70 miles at 5 knots (design) | |
| Complement | 3 officers and 22 ratings |
| Class: | 1993 - Present: Vanguard Class |
| Built By: | Vickers (Barrow) |
| Build Group: | SSBN2 |
The X and XE-Class submarines were conceived during the Second World War: around 51ft (16m) long, they were designed to be towed by a mother submarine and use their small size to complete stealth missions, such as attacking harbours and performing reconnaissance. Although they would not begin active service until 1942, the submarine crews achieved quite the record, racking up 167 honours between them, including four Victoria Crosses.
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| Length overall | 164 ft |
| Beam | 13 ft 10 7/8 inch |
| Depth | 13 ft 11 1/8 inch |
| Displacement | Surface 495 tons |
| Submerged 620 tons | |
| Diving Depth | 100 ft |
| Speed | Surface 14.5 knots (design) |
| Surface 14.5 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 9+ knots (service) | |
| No. of shafts | 2 |
| Propeller | 3 blades, 5 ft diameter |
| Armament | 2 x 18 inch bow tubes |
| 1 x 18 inch stern tube | |
| (6 torpedoes carried) | |
| Endurance | Surface: 2500 miles at 10 knots (design) |
| Surface: 2500 miles at 11.5 knots (service) | |
| Submerged: 70 miles at 5 knots (design) | |
| Complement | 3 officers and 22 ratings |
| Class: | 1993 - Present: Vanguard Class |
| Built By: | Vickers (Barrow) |
| Build Group: | SSBN2 |
The X and XE-Class submarines were conceived during the Second World War: around 51ft (16m) long, they were designed to be towed by a mother submarine and use their small size to complete stealth missions, such as attacking harbours and performing reconnaissance. Although they would not begin active service until 1942, the submarine crews achieved quite the record, racking up 167 honours between them, including four Victoria Crosses.
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.

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