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BOSTROM 31 MKII

BOSTROM 31 MKII and designed by Bruno Boström/Grandinsson. Her first hull was built in 1977 with an overall lengh of 9.33 m or 30.61 ft long

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BOSTROM 31 MKII Sailboat Specifications​

Features

Overall Length (LOA) m / ft9.33 m / 30.61 ft
Builder(s)Porali Marin AB
Designer(s)Bruno Boström/Grandinsson
CountrySweden
Hull TypeFin with rudder on skeg
First Hull Built1977
Last Hull Built1984
Rigging TypeMasthead Sloop
UnsinkableNo
TrailerableNo
Ballast Ratio50.01

Dimensions

Overall Length (LOA) 9.33 m / 30.61 ft
Waterline Length (LWL)7.92 m / 25.98 ft
Beam (width)2.76 m / 9.06 ft
Draft1.80 m / 5.91 ft
Light Displacement (MLC) 3300 kg / 7275 lb
Maximum Displacement3300 kg / 7275 lb
Ballast Weight1650 kg / 3638 lb

Performance

Capsize Screening Formula (CSF)1.87
Comfort Ratio21.81
Displacement-Length Ratio (DLR)185.21
Ballast Ratio50.01
Sail Area to Displacement15.82

Above Deck

Estimated Forestay Length11.97 m / 39.27 ft
Reported Sail Area34.37 m² / 370.00 ft²
Total Sail Area34.40 m² / 370.24 ft²
Mainsail Area13.58 m² / 146.21 ft²
I37.40 ft * 11.40 m
J11.98 ft * 3.65 m
P31.82 ft * 9.70 m
E9.19 ft * 2.80 m
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