Scale 1:48. Plan shows the sections, as fitted, of the Grampus class mine laying submarine Seal (1938). The plan shows the sections at Frames 12, 22, 38, 43, 55, 62, 73, 79 and 87 looking forward. The plan also shows the sections at Frames 93, 104, 114, 122, 136, 145, 157, 161 1/2 and 171 looking aft. The drawing includes the signature of J. F. Walker. [Manager of Constructive Department at Chatham Dockyard 1930-1946].