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1981 San Juan 21 Mark II Racing Refit - Spec Sheet
Capsize Ratio 2.45
Hull Speed 5.5
Sail Area/Displacement 23.2
Displacement To LWL 136
Length Water Line/Beam 2.429
Motion Comfort 9.55
Length overall: 20 ft 6 in
Length on waterline 17 ft 0 in
Beam 7 ft
Fractional (7/8) rig  
Sail area (main and 200%) 190 sq ft (Class genoa is a 130%; in PHRF or cruising most people also have a 155%)
Spinnaker: 284 sq ft (estimate from dimensions)
Mast height: 25 ft 8 in
Draft (keel down) 4 ft 0 in
Draft (keel up) 1 ft 0 in
Displ (class minimum): 1400 lb
Keel weight: 420 lb
PHRF Rating: 252 sec/mile (w/spinnaker) 264 sec/mile (working sails)
Number built approximately 2,700
   
I 22.5
P 23.00
J 8.00
E 8.75

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