AMERICAN 21

AMERICAN 21 drawing

Sailboat Specifications


Hull Type:
Lifting Keel
Rigging Type:
Masthead Sloop
LOA:
21.00 ft / 6.40 m
LWL:
17.67 ft / 5.39 m
S.A. (reported):
209.00 ft2 / 19.42 m2
Beam:
8.00 ft / 2.44 m
Draft (max):
4.00 ft / 1.22 m
Draft (min):
1.50 ft / 0.46 m
Displacement:
2,200 lb / 998 kg
Ballast:
550 lb / 249 kg
S.A./Disp.:
19.82
Bal./Disp.:
25.00
Disp./Len.:
178.02
Construction:
FG
Ballast Type:
Lead
First Built:
1973
Last Built:
# Built:
Builder:
American Fiberglass Corp.
Designer:
Ron Bertholf
Website:

Sailboat Calculations

S.A./Disp.:
19.82
Bal./Disp.:
25.00
Disp./Len.:
178.02
Comfort Ratio:
11.41

Rig and Sail Particulars

I:
25.10 ft / 7.65 m
J:
8.25 ft / 2.51 m
P:
23.10 ft / 7.04 m
E:
7.75 ft / 2.36 m
SPL/TPS:
ISP:
S.A. Fore:
103.54 ft2 / 9.62 m2
S.A. Main:
89.51 ft2 / 8.32 m2
S.A. Total (100% Fore + Main Triangles)
193.05 ft2 / 17.93 m2
S.A./Disp. (calc.):
18.30
Est. Forestay Len.:
26.42 ft / 8.05 m

Sailboat Links



.