| Built By: | Vickers (Barrow) |
| Build Group: | T 3 |
| Fate: | Contract cancelled. |
| Length overall | 273 ft 6 inch |
| Beam | 26 ft 6 inch |
| Depth | 14 ft 3 inch |
| Displacement | 1422 tons (surface) |
| 1571 tons (submerged) | |
| Diving Depth | (i) 300 ft |
| Speed | Surface 15.25 knots (design) |
| Surface 15.25 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 8.75 knots (service) | |
| No. of shafts | 2 |
| Endurance | Surface: 7500 miles at 15.25 knots (design) |
| (ii) Surface: 8000 miles at 10 knots (service) | |
| Submerged: 80 miles at 4 knots (design) | |
| Submerged: 80 miles at 4 knots (service) | |
| Armament | 8 x 21 inch bow tubes (2 external) |
| 2 x 21 inch amidship tubes | |
| (17 torpedoes carried) | |
| 1 x 4 inch gun | |
| 1 x 20mm Oerlikon cannon | |
| 3 x 0.303 inch machine-guns | |
| Complement | (peacetime) 5 Officers and 51 Ratings |
| (wartime) 6 Officers and 56 Ratings | |
| Notes | (i) This was increased to 350 feet in the all-welded boats. |
| (ii) T Class submarines serving in the Far East were modified to carry extra fuel, which increased endurance to 11 000 miles at 10 knots. |
The Royal Navy's all nuclear-powered submarine force arrived just a few years after it accepted for service four modern diesel-electric submarines of the UPHOLDER (S40) class (designated SSK for hunter killer). The decision to retire these excellent boats was made for financial reasons following the Cold War. This note reviews the Upholders and their retirement from the fleet.
Directed by William Fairchild, The Silent Enemy is a newly restored 1958 war film based on the real Lionel 'Buster' Crabb who vanished during a reconnaissance mission for the MI6, played by Laurence Harvey.
In 1941, Britain was sustaining enormous losses fighting a war on three fronts against an ever increasing Axis power. To add to their problems, the Italians have recently created a new form of warfare - Frogmen - an intrepid band of men who travel astride small torpedo-type vessels, and attach explosive charges to the hulls of enemy ships, below their waterline.
A young Naval Lieutenant, 'Buster' Crabb, an expert in mine and bomb disposal, is sent to Gibraltar to try and combat this new threat. Never having dived before, he sets to work to master the technique of underwater operations, and soon he and his team are able to locate many of the frogmen's charges and render them harmless. But with an invasion of North Africa imminent, time is not on the Allies' side.
13 pages added or updated in the last 1 month
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| Length overall | 273 ft 6 inch |
| Beam | 26 ft 6 inch |
| Depth | 14 ft 3 inch |
| Displacement | 1422 tons (surface) |
| 1571 tons (submerged) | |
| Diving Depth | (i) 300 ft |
| Speed | Surface 15.25 knots (design) |
| Surface 15.25 knots (service) | |
| Submerged 9 knots (design) | |
| Submerged 8.75 knots (service) | |
| No. of shafts | 2 |
| Endurance | Surface: 7500 miles at 15.25 knots (design) |
| (ii) Surface: 8000 miles at 10 knots (service) | |
| Submerged: 80 miles at 4 knots (design) | |
| Submerged: 80 miles at 4 knots (service) | |
| Armament | 8 x 21 inch bow tubes (2 external) |
| 2 x 21 inch amidship tubes | |
| (17 torpedoes carried) | |
| 1 x 4 inch gun | |
| 1 x 20mm Oerlikon cannon | |
| 3 x 0.303 inch machine-guns | |
| Complement | (peacetime) 5 Officers and 51 Ratings |
| (wartime) 6 Officers and 56 Ratings | |
| Notes | (i) This was increased to 350 feet in the all-welded boats. |
| (ii) T Class submarines serving in the Far East were modified to carry extra fuel, which increased endurance to 11 000 miles at 10 knots. |
The Royal Navy's all nuclear-powered submarine force arrived just a few years after it accepted for service four modern diesel-electric submarines of the UPHOLDER (S40) class (designated SSK for hunter killer). The decision to retire these excellent boats was made for financial reasons following the Cold War. This note reviews the Upholders and their retirement from the fleet.
Directed by William Fairchild, The Silent Enemy is a newly restored 1958 war film based on the real Lionel 'Buster' Crabb who vanished during a reconnaissance mission for the MI6, played by Laurence Harvey.
In 1941, Britain was sustaining enormous losses fighting a war on three fronts against an ever increasing Axis power. To add to their problems, the Italians have recently created a new form of warfare - Frogmen - an intrepid band of men who travel astride small torpedo-type vessels, and attach explosive charges to the hulls of enemy ships, below their waterline.
A young Naval Lieutenant, 'Buster' Crabb, an expert in mine and bomb disposal, is sent to Gibraltar to try and combat this new threat. Never having dived before, he sets to work to master the technique of underwater operations, and soon he and his team are able to locate many of the frogmen's charges and render them harmless. But with an invasion of North Africa imminent, time is not on the Allies' side.
13 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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