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BOSTROM 31 MKII

• Designed by Bruno Boström/Grandinsson
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BOSTROM 31 MKII - Photo
BOSTROM 31 MKII - Drawing

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General Information

Hull Type: Fin with rudder on skeg
Rigging Type: Masthead Sloop
First Built: 1977
Last Built: 1984

Dimensions

Length Overall (LOA): 9.33 m
Length Waterline (LWL): 7.92 m
Beam: 2.76 m
Draft (Max): 1.80 m

Weight & Ballast

Displacement: 3,300 kg
Ballast: 1,650 kg

Sail Plan

Foresail Area: 20.81 m²
Mainsail Area: 13.58 m²
Sail Area: 34.40 m²
Sail Area (reported): 34.37 m²
I (Fore Triangle Height): 11.40 m
J (Fore Triangle Base): 3.65 m
P (Mainsail Hoist): 9.70 m
E (Boom Length): 2.80 m
Est. Forestay Length: 11.97 m

Engine & Systems

Engine Make: Yanmar

Performance Ratios

Hull Speed: 6.83 knots
SA/Displacement (Calc): 15.83
SA/Displacement (Reported): 15.82
Ballast/Disp Ratio: 50.01%
Displacement/Length: 185.21
Comfort Ratio: 21.81
Capsize Screening: 1.87
S-Number: 2.74
Immersion: 150 kg/cm

Notes

Same hull as BOSTROM 31 but with more freeboard and new deck.

Market Value

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