PRECISION 21

PRECISION 21 drawing

Sailboat Specifications


Hull Type:
Keel/Cbrd.
Rigging Type:
Fractional Sloop
LOA:
20.75 ft / 6.32 m
LWL:
17.50 ft / 5.33 m
Beam:
8.25 ft / 2.51 m
S.A. (reported):
203.00 ft2 / 18.86 m2
Draft (max):
4.67 ft / 1.42 m
Draft (min):
1.75 ft / 0.53 m
Displacement:
1,875 lb / 850 kg
Ballast:
600 lb / 272 kg
S.A./Disp.:
21.41
Bal./Disp.:
32.00
Disp./Len.:
156.18
Construction:
FG
Ballast Type:
First Built:
1986
Last Built:
# Built:
Builder:
Precision Boat Works (USA)
Designer:
Jim Taylor
Website:

Sailboat Calculations

S.A./Disp.:
21.41
Bal./Disp.:
32.00
Disp./Len.:
156.18
Comfort Ratio:
9.43
Capsize Screening Formula:
2.68

Rig and Sail Particulars

I:
22.70 ft / 6.92 m
J:
7.00 ft / 2.13 m
P:
23.70 ft / 7.22 m
E:
9.50 ft / 2.90 m
SPL/TPS:
ISP:
S.A. Fore:
79.45 ft2 / 7.38 m2
S.A. Main:
112.58 ft2 / 10.46 m2
S.A. Total (100% Fore + Main Triangles)
192.03 ft2 / 17.84 m2
S.A./Disp. (calc.):
20.25
Est. Forestay Len.:
23.75 ft / 7.24 m
Mast Height from DWL:
30.00 ft / 9.14 m

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Designers:

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