Deane's 17th-century British 3rd-Rate Warship

3D Model

Although, Deane’s manuscript was written to explain hull design of the 3rd rate warship, these dimensions of the ships are primarily based on ratio, not measurements presented, therefore it can be applied to 1st – 4th rates ship.

As I understood Deane’s descriptions. shapes of frames of the entire hull were designed by four arcs/circles of different radius. This indicates shipwrights only required four molds to design and cut frames of a ship.

Additionally, positions of the four arcs/circles were controlled by four lines: rising of the floor, narrowing of the floor, rising and the greatest breadth, and narrowing of the greatest breadth. These lines were drawn with the Pythagorean Theorem. Dean’s design of naval warships was quite simple, yet one of the most sophisticated design.

Radius of Arcs/Circles (Deane’s 3rd Rate Warships) Light Green = 9 ft. Dark Green = 7 ft. Purple = 20 ft. Orange = 17 ft.