Sealion (1959). No. 1 main tank access holes in the hull between 9 and 14 stations.

A sheet film negative, possibly acetate. The submarine Sealion (1959) undergoing a refit in Admiralty floating dock AFD60 (1966) at Faslane. A close view of the number one main tank access holes in the hull between 9 and 14 stations, taken from the floor of the dock. An Admiralty copy negative of a whole plate photographic print.