LUDERS 21

LUDERS 21 drawing

Sailboat Specifications


Hull Type:
Fin Keel w/bulb
Rigging Type:
Fractional Sloop
LOA:
21.25 ft / 6.48 m
LWL:
16.00 ft / 4.88 m
S.A. (reported):
139.00 ft2 / 12.91 m2
Beam:
5.58 ft / 1.70 m
Draft (max):
3.00 ft / 0.91 m
Draft (min):
Displacement:
1,500 lb / 680 kg
Ballast:
435 lb / 197 kg
S.A./Disp.:
17.01
Bal./Disp.:
29.00
Disp./Len.:
163.49
Construction:
FG hull, Wood Deck
Ballast Type:
First Built:
1967
Last Built:
# Built:
Builder:
Ron Rawson Inc./ American Plastics Inc. (USA)
Designer:
A. E. Luders
Website:

Sailboat Calculations

S.A./Disp.:
17.01
Bal./Disp.:
29.00
Disp./Len.:
163.49
Comfort Ratio:
13.34

Rig and Sail Particulars

I:
18.00 ft / 5.49 m
J:
5.50 ft / 1.68 m
P:
21.50 ft / 6.55 m
E:
8.25 ft / 2.51 m
SPL/TPS:
ISP:
S.A. Fore:
49.50 ft2 / 4.60 m2
S.A. Main:
88.69 ft2 / 8.24 m2
S.A. Total (100% Fore + Main Triangles)
138.19 ft2 / 12.84 m2
S.A./Disp. (calc.):
16.91
Est. Forestay Len.:
18.82 ft / 5.74 m

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