Valiant-class submarine
Class of ship
The Valiant class were a class of nuclear-powered fleet submarines in service with the Royal Navy from the mid-1960s until 1994. They were the first fully British nuclear fleet submarine; the earlier HMS Dreadnought used an American nuclear... Wikipedia
Displacement: 4,400 long tons (4,500 t) surfaced; 4,900 long tons (5,000 t) submerged
In commission: 18 July 1966 – 12 August 1994
Propulsion: 1 × Rolls-Royce pressurised water reactor; 2 × steam turbines; 1 shaft