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SAN JUAN 21
San Juan Mk I photo on sailboatdata.com
San Juan 21 MkI drawing on sailboatdata.com
Hyde Sails Direct

Hull Type:  Swing Keel Rig Type:  Fractional Sloop
LOA:  20.50' / 6.25m LWL:  17.50' / 5.33m
Beam:  7.00' / 2.13m Listed SA:  193 ft2 / 17.93 m2
Draft (max.)  4.00' / 1.22m Draft (min.)  1.00' / 0.30m
Displacement:  1400 lbs./ 635 kgs. Ballast:  400 lbs. / 181 kgs.
Sail Area/Disp.1:  24.73 Bal./Disp.:  28.50% Disp./Len.:  116.62
Designer:  Don Clark
Builder:  Clark Boat Co. (USA)
Construction:  FG Bal. type:  
First Built:  1970 Last Built:  1977 # Built:  2600
RIG AND SAIL PARTICULARS  KEY
I(IG):  22.50' / 6.86m J:  8.21' / 2.50m
P:  23.00' / 7.01m E:  8.75' / 2.67m
PY:   EY:  
ISP:   SPL/TPS:  
SA(Fore.):  92.36 ft2 / 8.58 m2 SA(Main):  100.63 ft2 / 9.35 m2
Sail Area (100% fore+main triangles):   192.99 ft2 / 17.93 m2
Sail Area/Disp.2:  24.72 Est. Forestay Length.:  23.95' / 7.30m
BUILDERS (past & present)
More about & boats built by:   Clark Boat Company
RELATED LINKS
  San Juan 21 Class Accociation  sj21class.org
NOTES
Clark Boat Co. had previously built a number of One-Design Dinghy's, but this was the first 'SAN JUAN' and a huge success.
Designed displacement was 1250 lbs. but it was found that most ended up at 1400 lbs.
Thanks to Samuel Tricky for providing corrected information for this and number of other boats in this category.
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