Sailboat Specifications
Hull Type:
Fin w/spade rudder
Rigging Type:
Masthead Sloop
LOA:
29.86 ft / 9.10 m
LWL:
23.67 ft / 7.21 m
Beam:
10.05 ft / 3.06 m
S.A. (reported):
402.00 ft2 / 37.35 m2
Draft (max):
5.33 ft / 1.62 m
Displacement:
7,200 lb / 3,266 kg
Ballast:
3,550 lb / 1,610 kg
S.A./Disp.:
17.30
Bal./Disp.:
49.31
Disp./Len.:
242.38
Construction:
FG
Ballast Type:
Lead
First Built:
1975
# Built:
360
Builder:
Clark Boat Co. (USA)
Designer:
Bruce Kirby
Auxiliary Power/Tanks (orig. equip.)
Make:
Universal
Model:
Atomic 4
Type:
Gas
Fuel:
17 gals / 64 L
Sailboat Calculations
S.A./Disp.:
17.30
Bal./Disp.:
49.31
Disp./Len.:
242.38
Comfort Ratio:
20.16
Capsize Screening Formula:
2.09
S#:
2.28
Rig and Sail Particulars
I:
38.50 ft / 11.73 m
J:
12.50 ft / 3.81 m
P:
34.00 ft / 10.36 m
E:
9.50 ft / 2.90 m
S.A. Fore:
240.63 ft2 / 22.35 m2
S.A. Main:
161.50 ft2 / 15.00 m2
S.A. Total (100% Fore + Main Triangles)
402.13 ft2 / 37.36 m2
S.A./Disp. (calc.):
17.31
Est. Forestay Len.:
40.48 ft / 12.34 m
Accommodations
Water:
20 gals / 76 L
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Notes
Based on an IOR 1/2 ton prototype.A more racing oriented version (with a shorter coach roof and longer cockpit, deeper keel etc.) was also available. How many of these were built in unknown. Available with the deeper keel: 6.0'/1.83mTall rig:I: 39.5'/12.04mJ: 12.5'/3.81mP: 35.0'/10.67mE: 9.5'/2.90mThanks to SJ 30 owner Chris F. for providing additional information.
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