| Built By: | Vickers (Barrow) |
| Build Group: | C2 |
| Fate: | Scrapped in February 1920. |
| 1909: | Lieutenant | Robert Bertram Ramsay | |
| 1910: | Lieutenant | Geoffrey Nepean Biggs | |
| 1911: | Lieutenant | John Robert Guy Moncreiffe | |
| 1911: | Lieutenant | Roland Aubin Vavasor Durell | |
| 1911: | Lieutenant | Walter Edward Scott | |
| 1912: | Lieutenant | Henry Phillips Hughes |
1914: 7th Flotilla Chatham, HMS Vulcan and Alecto
| Length overall | 143 ft |
| Beam | 13 ft |
| Draught | 11.5 ft |
| Displacement | Surface 290 tons |
| Submerged 321 tons | |
| Diving Depth | 100 ft |
| Speed | Surface 13 knots (design) |
| Surface 13+ knots (service) | |
| Submerged 7.5+ knots (design) | |
| Submerged 8 knots (service) | |
| Machinery | 600 hp petrol engine |
| 200 hp electric motor | |
| Fuel | 15.5 tons (Petrol) |
| No. of shafts | 1 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Armament | 2 x 18 inch bow torpedo tubes (4 torpedoes carried) |
| Endurance | Surface: 1300 miles at 9 knots (design) |
| Surface: 910 miles at full power (service) | |
| Submerged: 16 miles at 8 knots | |
| Complement | 2 x officers, 14 x ratings |
In 1944 the Royal Navy succeeded in modifying one of its conventional submarines, Seraph, to match the performance of the radically new Type XXI fast boats that intelligence showed Germany was developing.1 If the enemy had succeeded in getting the Typ XXI to sea in large numbers, they would have revolutionised submarine warfare, and severely tested Allied anti-submarine defences.
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.
12 pages added or updated in the last 1 month
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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.
| Length overall | 143 ft |
| Beam | 13 ft |
| Draught | 11.5 ft |
| Displacement | Surface 290 tons |
| Submerged 321 tons | |
| Diving Depth | 100 ft |
| Speed | Surface 13 knots (design) |
| Surface 13+ knots (service) | |
| Submerged 7.5+ knots (design) | |
| Submerged 8 knots (service) | |
| Machinery | 600 hp petrol engine |
| 200 hp electric motor | |
| Fuel | 15.5 tons (Petrol) |
| No. of shafts | 1 |
| Propeller | 3 blades, 5 ft 7 inch diameter |
| Armament | 2 x 18 inch bow torpedo tubes (4 torpedoes carried) |
| Endurance | Surface: 1300 miles at 9 knots (design) |
| Surface: 910 miles at full power (service) | |
| Submerged: 16 miles at 8 knots | |
| Complement | 2 x officers, 14 x ratings |
In 1944 the Royal Navy succeeded in modifying one of its conventional submarines, Seraph, to match the performance of the radically new Type XXI fast boats that intelligence showed Germany was developing.1 If the enemy had succeeded in getting the Typ XXI to sea in large numbers, they would have revolutionised submarine warfare, and severely tested Allied anti-submarine defences.
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.
12 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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