£97,000,000[5] (equivalent to £304.82 million in 2023)[4]
脚注
^"Unit cost, i.e. excluding cost of certain items (e.g. aircraft, First Outfits)." Text from Defences Estimates
^ abcdefghijklmnopqrstGardiner, Robert Conway's All the World's Fighting Ships 1947–1995, pub Conway Maritime Press, 1995, ISBN0-85177-605-1 p. 531.
^ abcdefgMoore, John, Janes Fighting Ships 1982–83, pub Jane's Publishing, 1982, ISBN0-7106-0742-3 p. 546, which quotes building costs for Swiftsure, Superb, Sceptre, and Splendid. The costs quoted for Superb, Sceptre, and Splendid are identical to those from Hansard.
^Sceptre's Apple Bye, Navy News, August 2010, page 11.
^Hansard HC Deb 24 November 1977 vol 939 cc869-70W Question to the Secretary of State for Defence about contracts, 24 November 1977. For the fifth Swiftsure class fleet submarine (HMS Spartan) the planned order date when tender invited was September 1972. The contract was placed in February 1973.
^Hansard HC Deb 15 November 1976 vol 919 c363W Question to the Secretary of State for Defence about shipbuilding contracts, 15 November 1976. For the sixth Swiftsure class fleet submarine, the planned order date when tender invited was late 1974. The contract was placed in May 1976.