Technical Spec

1937/1938 Single Step Hydroplane

Designer: Fred Cooper M.Inst.N.A.
Consultant Engineer: Reid Railton
Builders: Saunders Roe Ltd. (I.O.W)

 

 

Dimensions and Technical Specifications

Length overall: 23′ 0″ (7.01 m)
Length at waterline 22′ 3″ (6.78 m)
Width 9′ 6″ (2.89 m)
Draught: 1′ 9″ (0.53 m)
Displacement: 4,945 lbs. (2243 kg.)
Propeller diameter: 12″ (30.5 cm) to 14″ (35.6 cm)
Propeller pitch: 20″ (50.8 cm) to 27″ (68.6 cm)
Propeller speed 9,500 rpm.
Gear ratio: 3:1 increase on engine revs.
Engine: Rolls Royce R Type Vee 12
Starter Compressed air type

 

Construction

Main Structure: Two Rock Elm and Alloy runners
Frame: One piece 7 ply timber
Bottom: 5 ply timber
Deck: 6 ply timber
Top deck: Aircraft canvas and dope
Fittings: Alcan and Duralmin