Box

Four plans depicting the 'analysis of St Albans models fractional 1/2 breadths'.
One plans depicting the 'waterline area curve data - unknown vessel' (and four sheets of technical data).
Ten plans depicting the 'St Albans single screw forms - cross curves of 1/2 breadths'.
Two plans depicting the 'Clydebank experiment tank, proposed extension 1968'.
One plan depicting the 'BSRA 0.75cb Stand - wooden model results with Denny propeller 531'.
One plan depicting a 'propeller No234'.
Four plans depicting 'vortex propellor designs 1920'.
Two plans depicting the 'Heliston propellor design J Stone & Co 1956'.
Eight plans depicting the 'BSRA test launch third series Y) 63/49'.