IMPULSE 21

IMPULSE 21 photo IMPULSE 21 drawing

Sailboat Specifications


Hull Type:
Fin w/spade rudder
Rigging Type:
Fractional Sloop
LOA:
21.00 ft / 6.40 m
LWL:
18.00 ft / 5.49 m
S.A. (reported):
208.00 ft2 / 19.32 m2
Beam:
8.00 ft / 2.44 m
Draft (max):
3.25 ft / 0.99 m
Draft (min):
Displacement:
1,300 lb / 590 kg
Ballast:
600 lb / 272 kg
S.A./Disp.:
28.00
Bal./Disp.:
46.15
Disp./Len.:
99.51
Construction:
FG
Ballast Type:
First Built:
1986
Last Built:
# Built:
150
Builder:
Impulse Marine / Johnson Boatworks (USA)
Designer:
William Cook
Website:
groups.yahoo.com/group/Impulse21sailors

Sailboat Calculations

S.A./Disp.:
28.00
Bal./Disp.:
46.15
Disp./Len.:
99.51
Comfort Ratio:
6.66

Rig and Sail Particulars

I:
23.50 ft / 7.16 m
J:
7.00 ft / 2.13 m
P:
26.00 ft / 7.92 m
E:
9.70 ft / 2.96 m
SPL/TPS:
8.00 ft / 2.44 m
ISP:
23.50 ft / 7.16 m
S.A. Fore:
82.25 ft2 / 7.64 m2
S.A. Main:
126.10 ft2 / 11.72 m2
S.A. Total (100% Fore + Main Triangles)
208.35 ft2 / 19.36 m2
S.A./Disp. (calc.):
28.04
Est. Forestay Len.:
24.52 ft / 7.47 m

Sailboat Links

Designers:

Notes

Thanks to 'Warren' for providing updated information.



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