US 21

US 21 photo US 21 drawing

Sailboat Specifications


Hull Type:
Lifting Keel
Rigging Type:
Fractional Sloop
LOA:
21.25 ft / 6.48 m
LWL:
18.00 ft / 5.49 m
Beam:
8.00 ft / 2.44 m
S.A. (reported):
220.00 ft2 / 20.44 m2
Draft (max):
4.58 ft / 1.40 m
Draft (min):
1.25 ft / 0.38 m
Displacement:
1,700 lb / 771 kg
Ballast:
200 lb / 91 kg
S.A./Disp.:
24.77
Bal./Disp.:
11.76
Disp./Len.:
130.13
Construction:
FG
Ballast Type:
First Built:
1982
Last Built:
# Built:
Builder:
US Yachts - Bayliner (USA)
Designer:
Website:

Sailboat Calculations

S.A./Disp.:
24.77
Bal./Disp.:
11.76
Disp./Len.:
130.13
Comfort Ratio:
8.67
Capsize Screening Formula:
2.68

Rig and Sail Particulars

I:
26.33 ft / 8.03 m
J:
7.83 ft / 2.39 m
P:
26.00 ft / 7.92 m
E:
9.00 ft / 2.74 m
SPL/TPS:
ISP:
S.A. Fore:
103.08 ft2 / 9.58 m2
S.A. Main:
117.00 ft2 / 10.87 m2
S.A. Total (100% Fore + Main Triangles)
220.08 ft2 / 20.45 m2
S.A./Disp. (calc.):
24.78
Est. Forestay Len.:
27.47 ft / 8.37 m

Sailboat Links

Notes

Later it became the TRITON 21.

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