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Cruachan Marine (Scotland)

Sk 700 Specifications

Main Specs
Length, m 6.86
Beam, m 2.47
Draft, m 1.46
Displacement, kg 798.00
Classification
Hull Type Lifting keel w/bulb; trans. hung rudder
Hull Material GRP
Rigging and Keel
Rig Fractional Sloop
Keel Lead
Max Draft, m 1.46
Min Draft, m 0.52
Engine
Engine Type Outboard
Manufacturer Information
Shipyard Cruachan Marine (Scotland)
Designer Stephen Jones
Association minitonner.proboards.com
Period of manufacturing 1979 - 1979
Technical Specs
LOA, m 6.86
Sail Area (S.A.), m² 25.55
Ballast, kg 272.00
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.
× Ballast / Displacement Formula
Bal./Disp = ballast (lbs)/ displacement (lbs)*100
A Ballast/Displacement ratio of 40 or more translates into a stiffer, more powerful boat that will be better able to stand up to the wind.
× 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 30.26ℹ️
Ballast / Displacement, % 34.09ℹ️
Capsize Screening Formula 2.69ℹ️
Rig and Sail Particulars
× S.A. Fore Formula
S.A. Fore = I * J / 2
This is the area of the fore triangle, calculated by multiplying I and J and dividing by 2.
× 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.
× S.A. Total Formula
S.A. Total = S.A. Fore + S.A. Main
This is the sum of the fore and main sail areas.
× Forestay Length Formula
Est. Forestay Length = √(I² + J²)
This is the length of the forestay, calculated using the Pythagorean theorem.
I, m 6.55
J, m 2.32
P, m 8.32
E, m 3.12
S.A. Fore, 7.6 ℹ️
S.A. Main, 12.98 ℹ️
S.A. Total, 20.58 ℹ️
Est. Forestay Length, m 6.95 ℹ️