HB 31

HB 31 photo HB 31 drawing

Sailboat Specifications


Hull Type:
Fin w/spade rudder
Rigging Type:
Fractional Sloop
LOA:
30.50 ft / 9.30 m
LWL:
23.60 ft / 7.19 m
S.A. (reported):
370.00 ft2 / 34.37 m2
Beam:
10.50 ft / 3.20 m
Draft (max):
5.60 ft / 1.71 m
Draft (min):
Displacement:
5,500 lb / 2,495 kg
Ballast:
2,645 lb / 1,200 kg
S.A./Disp.:
19.06
Bal./Disp.:
48.09
Disp./Len.:
186.80
Construction:
FG
Ballast Type:
First Built:
1983
Last Built:
1985
# Built:
25
Builder:
Hunter Boats (UK)
Designer:
Van de Stadt
Website:

Auxiliary Power/Tanks (orig. equip.)

Make:
Yanmar
Model:
2GM
Type:
Diesel
HP:
15

Sailboat Calculations

S.A./Disp.:
19.06
Bal./Disp.:
48.09
Disp./Len.:
186.80
Comfort Ratio:
14.45

Rig and Sail Particulars

I:
33.30 ft / 10.15 m
J:
6.50 ft / 1.98 m
P:
37.10 ft / 11.31 m
E:
14.10 ft / 4.30 m
SPL/TPS:
ISP:
S.A. Fore:
108.23 ft2 / 10.05 m2
S.A. Main:
261.56 ft2 / 24.30 m2
S.A. Total (100% Fore + Main Triangles)
369.78 ft2 / 34.35 m2
S.A./Disp. (calc.):
19.04
Est. Forestay Len.:
33.93 ft / 10.34 m

Sailboat Links

Notes

IOR 1/2 ton. Another version was the FORMULA 31.



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