British Porpoise-class submarine
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For the World War II minelaying submarines, see Grampus-class submarine.
The Porpoise class was an eight-boat class of diesel-electric submarines operated by the Royal Navy. This class was originally designated patrol submarines, then attack. They were the first conventional British submarines to be built after the end of World War II. Their design was, in many ways, influenced by the German World War II-era Type XXI U-boats.
Quick Facts Class overview, General characteristics ...
Class overview | |
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Name | Porpoise |
Builders | |
Operators | Royal Navy |
Preceded by | Explorer class |
Succeeded by | Oberon class |
Built | 1956–1959 |
In service | 1961-1980s |
In commission | 1956–1988 |
Completed | 8 |
General characteristics | |
Type | Patrol/Attack submarine |
Displacement |
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Length | 290 ft (88 m) |
Beam | 26 ft 7 in (8.10 m) |
Draught | 18 ft (5.5 m) |
Propulsion |
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Speed |
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Range | 9,000 nmi (17,000 km; 10,000 mi) at 12 kn (22 km/h; 14 mph) |
Complement | 71 |
Armament |
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