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from plans for amateur builder

Skimmer Specifications

Main Specs
Length, m 3.33
Beam, m 1.37
Draft, m 0.56
Displacement, kg 136.00
Classification
Hull Type Centerboard Dinghy
Hull Material Wood planked single chine
Rigging and Keel
Rig Cat (Marconi)
Max Draft, m 0.56
Min Draft, m 1.37
Manufacturer Information
Shipyard from plans for amateur builder
Designer William F. Crosby
Period of manufacturing 1933 - 1933
Technical Specs
LOA, m 3.33
Sail Area (S.A.), m² 6.04
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 23.24ℹ️
Capsize Screening Formula 2.69ℹ️
Rig and Sail Particulars
× S.A. Main Formula
S.A. Main = P * E / 2
This is the area of the main triangle, calculated by multiplying P and E and dividing by 2.
P, m 4.55
E, m 2.74
S.A. Main, 6.23 ℹ️