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THUNDERBIRD

THUNDERBIRD and designed by Ben Seaborn. Her first hull was built in 1958 with an overall lengh of 7.92 m or 25.98 ft long

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THUNDERBIRD Sailboat Specifications​

Features

Overall Length (LOA) m / ft7.92 m / 25.98 ft
Designer(s)Ben Seaborn
Hull TypeFin w/spade rudder
First Hull Built1958
Rigging TypeFractional Sloop
UnsinkableNo
TrailerableNo
Ballast Ratio41.92

Dimensions

Overall Length (LOA) 7.92 m / 25.98 ft
Waterline Length (LWL)6.17 m / 20.25 ft
Beam (width)2.30 m / 7.54 ft
Draft1.46 m / 4.79 ft
Light Displacement (MLC) 1656 kg / 3650 lb
Maximum Displacement1656 kg / 3650 lb
Ballast Weight694 kg / 1530 lb

Performance

Capsize Screening Formula (CSF)1.96
Comfort Ratio17.4
Displacement-Length Ratio (DLR)196.23
Ballast Ratio41.92
Sail Area to Displacement20.91

Above Deck

Estimated Forestay Length8.51 m / 27.92 ft
Reported Sail Area28.71 m² / 309.00 ft²
Total Sail Area28.66 m² / 308.50 ft²
Mainsail Area18.72 m² / 201.50 ft²
I26.75 ft * 8.15 m
J8.00 ft * 2.44 m
P31.00 ft * 9.45 m
E13.00 ft * 3.96 m
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