This is a photograph album with a lace binding. There are 30 leaves and 53 photographs (203mm x 152mm) lightly gummed (many now loose). The album is interleaved and contains an indexed contents list, each photograph bears on the reverse "Vosper Ltd. Portsmouth. Copyright Photograph".
The album includes the following:
Photographs of mock-up of vessel (full size, wooden) before construction of the boats
Showing aspects of the mock-up at Vospers Ltd., Portsmouth, June 1956-January 1957