Box containing ship plans and technical records for the following Yard Numbers:

Four ship plans for 633-635 'O' class submarine. Twenty ship plans fro 636 H.M.S 'Resource'. Three ship plans for 637 ' Orontes'. Twenty-four ship plans for 638-641. Thirty ship plans for 642 H.M.S 'Arrow'. Twelve ship plans for 650 a Siamese gunboat. Eight ship plans for 651'Ormonde'. Five ship plans for 652 S.S 'Aruacano'. Eleven ship plans for 656 'Keith'. Eleven ship plans for 653-655 also 'Rainbow' .