IMPULSE 21

IMPULSE 21 photo IMPULSE 21 drawing

Sailboat Specifications


Hull Type:
Fin w/spade rudder
Rigging Type:
Fractional Sloop
LOA:
6.40 m
LWL:
5.49 m
Beam:
2.44 m
S.A. (reported):
19.32 m2
Draft (max):
0.99 m
Draft (min):
Displacement:
590 kg
Ballast:
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
Capsize Screening Formula:
2.93

Rig and Sail Particulars

I:
7.16 m
J:
2.13 m
P:
7.92 m
E:
2.96 m
SPL/TPS:
2.44 m
ISP:
7.16 m
S.A. Fore:
7.64 m2
S.A. Main:
11.72 m2
S.A. Total (100% Fore + Main Triangles)
19.36 m2
S.A./Disp. (calc.):
28.04
Est. Forestay Len.:
7.47 m

Sailboat Links

Designers:

Notes

Thanks to 'Warren' for providing updated information.



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