San Juan 7.7

1979
Designer
Don Clark
Builder
Clark Boat Company
Associations
?
# Built
?
Hull Type
Fin w/spade rudder
Construction
FG

Dimensions

Length Overall
25 9 / 7.9 m
Waterline Length
20 0 / 6.1 m
Beam
9 6 / 2.9 m
Draft
4 0 / 1.2 m
Displacement
3,200 lbs / 1,451 kg
Ballast
1,200 lbs / 544 kg
drawing

Rig and Sails

Type
Fractional Sloop
Reported Sail Area
297 ft2 / 27.6 m2
Total Sail Area
296.8 ft2 / 27.6 m2
Mainsail
Sail Area
165 ft2 / 15.3 m2
P
29 11 / 9.1 m
E
10 11 / 3.4 m
Mast Height
?
Foresail
Sail Area
131.9 ft2 / 12.3 m2
I
27 9 / 8.5 m
J
9 6 / 2.9 m
Forestay Length
29 3 / 8.9 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
5.99 knots
Sail Area/Displacement
21.88
high performance
Ballast/Displacement
37.5
less stiff, less powerful
Displacement/Length
178.57
light
Comfort Ratio
11.27
lightweight racing boat
Capsize Screening
2.58
better suited for coastal cruising

Notes

The SJ7.7 replaced the SJ 26 in 1979. Intitially this boat was called the SAN JUAN 26 PC.
Later boats had a deeper keel and more ballast.
Draft: 4.5’/1.37m
Disp.: 3325 lts./ 1508 kgs
Ballast: 1325 lbs./605 kgs


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