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Gemico/Inter-Marine Corp

Chipmunk Specifications

Main Specs
Length, m 3.66
Beam, m 1.17
Displacement, kg 44.00
Classification
Hull Type Daggerboard
Hull Material Rotocast polyethylene
Rigging and Keel
Rig Cat (unstayed)
Min Draft, m 0.10
Manufacturer Information
Shipyard Gemico/Inter-Marine Corp
Designer George O'Day
Ian Proctor
Period of manufacturing 1970 - 1970
Technical Specs
LOA, m 3.66
LOD, m 3.51
Sail Area (S.A.), m² 5.20
Sailboat Calculations
× S.A. / Displacement Formula
SA/D = SA (ft²) ÷ [Disp (lbs) / 64]^0.666
A sail area/displacement ratio below 16 would be considered under powered; 16 to 20 would indicate reasonably good performance; above 20 suggests relatively high performance.
× Capsize Screening Formula
CSF = Beam ÷ (Disp in cubic ft)^(1/3)
Designed to determine if a boat has blue water capability. The CSF compares beam with displacement since excess beam contributes to capsize and heavy displacement reduces capsize vulnerability. The boat is better suited for ocean passages (vs coastal cruising) if the result of the calculation is 2.0 or less. The lower the better.
S.A. / Displacement 42.43ℹ️
Capsize Screening Formula 3.34ℹ️