Sheet 4 of a set of five drawings illustrating a design proposal for a two-man submersible submitted to the Admiralty by a Mr. George Gerrey of Newhaven in January 1882.

Graduated bar scales. A plan showing the outboard profile of the craft, illustrating the area of movement of the paddles. There are also detail drawings of the air tube paying-out apparatus and the structure of the paddle blades.

The plan is signed by the designer and dated 11 January 1882.