HC Deb 01 April 1958 vol 585 c135W
Captain Kerby

asked the Parliamentary Secretary to the Admiralty whether the cost of converting, re-equipping, and refitting the T-Class submarines into the T conversion class has yet exceeded the original cost of these war-built submarines.

Mr. Allan

Yes, which is in part due to the fall in the purchasing power of the £, but these conversions cost very much less than would their replacement by new construction.