| Built By: | Pembroke Dockyard |
| Build Group: | J |
| Fate: | Scrapped in January 1926. |
1917 - 11th Flotilla. HMS Titania, Blyth
The original J4 was cancelled in April 1915. The second J4 (this one) started life as J8
| Length overall | 274 ft |
| Beam | 23 ft |
| Draught | 16 ft |
| Displacement | 1210 tons (surface) |
| 1760 tons (submerged) | |
| Diving Depth | 300 ft |
| Shafts | 3 |
| Propulsion | Surfaced 3 x 12 cylinder diesel engines (3,600 hp) |
| Submerged 2 x battery driven electric motors (1,200 hp) | |
| Speed | 19.5 knots (surface) |
| 9.5 knots (submerged) | |
| Endurance | 91 tons Diesel Oil for 5,000 nautical miles at 12.5 knots |
| Armament | 4 x 18 inch bow torpedo tubes |
| 2 x 18 inch beam torpedo tubes | |
| 1 x 4 inch gun | |
| Complement | 5 Officers and 39 Ratings |
In November 1942 His Majesty's Submarine P311 slipped quietly from her moorings in Malta. She was never to return. Now, 73 years after her disappearance en-route to Sardinia, the vessel and her entombed 71 man crew have apparently been found gently resting on the seabed, off the Italian island of Tavolara
An evaluation of the predominant submarine of World War II and the post-war years, this book describes each amendment and re-design of the basic structure, and examples are given to portray the vessel in action.
20 pages added or updated in the last 1 month
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| Length overall | 274 ft |
| Beam | 23 ft |
| Draught | 16 ft |
| Displacement | 1210 tons (surface) |
| 1760 tons (submerged) | |
| Diving Depth | 300 ft |
| Shafts | 3 |
| Propulsion | Surfaced 3 x 12 cylinder diesel engines (3,600 hp) |
| Submerged 2 x battery driven electric motors (1,200 hp) | |
| Speed | 19.5 knots (surface) |
| 9.5 knots (submerged) | |
| Endurance | 91 tons Diesel Oil for 5,000 nautical miles at 12.5 knots |
| Armament | 4 x 18 inch bow torpedo tubes |
| 2 x 18 inch beam torpedo tubes | |
| 1 x 4 inch gun | |
| Complement | 5 Officers and 39 Ratings |
In November 1942 His Majesty's Submarine P311 slipped quietly from her moorings in Malta. She was never to return. Now, 73 years after her disappearance en-route to Sardinia, the vessel and her entombed 71 man crew have apparently been found gently resting on the seabed, off the Italian island of Tavolara
An evaluation of the predominant submarine of World War II and the post-war years, this book describes each amendment and re-design of the basic structure, and examples are given to portray the vessel in action.
20 pages added or updated in the last 1 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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