IRWIN 21 FREE SPIRIT

Sailboat Specifications


Hull Type:
Lifting Keel
Rigging Type:
Fractional Sloop
LOA:
21.00 ft / 6.40 m
LWL:
16.50 ft / 5.03 m
Beam:
8.00 ft / 2.44 m
S.A. (reported):
202.00 ft2 / 18.77 m2
Draft (max):
4.50 ft / 1.37 m
Draft (min):
0.84 ft / 0.26 m
Displacement:
1,800 lb / 816 kg
Ballast:
750 lb / 340 kg
S.A./Disp.:
21.89
Bal./Disp.:
41.67
Disp./Len.:
178.88
Construction:
FG
Ballast Type:
Lead
First Built:
1980
Last Built:
# Built:
Builder:
Irwin Yachts (USA)
Designer:
Ted Irwin
Website:

Sailboat Calculations

S.A./Disp.:
21.89
Bal./Disp.:
41.67
Disp./Len.:
178.88
Comfort Ratio:
9.76
Capsize Screening Formula:
2.63

Rig and Sail Particulars

I:
24.00 ft / 7.32 m
J:
8.00 ft / 2.44 m
P:
24.50 ft / 7.47 m
E:
8.60 ft / 2.62 m
SPL/TPS:
ISP:
S.A. Fore:
96.00 ft2 / 8.92 m2
S.A. Main:
105.35 ft2 / 9.79 m2
S.A. Total (100% Fore + Main Triangles)
201.35 ft2 / 18.71 m2
S.A./Disp. (calc.):
21.82
Est. Forestay Len.:
25.30 ft / 7.71 m

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Notes

The FREE SPIRIT is similar to the IRWIN MINI-TON but with a smaller rig.

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