US 21

US 21 photo US 21 drawing

Sailboat Specifications


Hull Type:
Lifting Keel
Rigging Type:
Fractional Sloop
LOA:
6.48 m
LWL:
5.49 m
Beam:
2.44 m
S.A. (reported):
20.44 m2
Draft (max):
1.40 m
Draft (min):
0.38 m
Displacement:
771 kg
Ballast:
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:
8.03 m
J:
2.39 m
P:
7.92 m
E:
2.74 m
SPL/TPS:
ISP:
S.A. Fore:
9.58 m2
S.A. Main:
10.87 m2
S.A. Total (100% Fore + Main Triangles)
20.45 m2
S.A./Disp. (calc.):
24.78
Est. Forestay Len.:
8.37 m

Sailboat Links

Notes

Later it became the TRITON 21.

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