Vivacity 21

1970
Designer
Alan F. Hill
Builder
Russell Marine Ltd.
Associations
?
# Built
?
Hull Type
Twin Keel
Construction
FG

Dimensions

Length Overall
21 3 / 6.5 m
Waterline Length
19 3 / 5.9 m
Beam
7 1 / 2.2 m
Draft
2 3 / 0.7 m
Displacement
2,500 lbs / 1,134 kg
Ballast
1,100 lbs / 499 kg
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
224 ft2 / 20.8 m2
Total Sail Area
203.3 ft2 / 18.9 m2
Mainsail
Sail Area
106.9 ft2 / 9.9 m2
P
22 6 / 6.9 m
E
9 6 / 2.9 m
Mast Height
?
Foresail
Sail Area
96.4 ft2 / 9 m2
I
25 11 / 7.9 m
J
7 4 / 2.3 m
Forestay Length
27 0 / 8.2 m

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
5.88 knots
Sail Area/Displacement
19.46
good performance
Ballast/Displacement
44.0
stiffer, more powerful
Displacement/Length
156.46
light
Comfort Ratio
14.05
lightweight racing boat
Capsize Screening
2.11
better suited for coastal cruising

Notes

Fin or Bilge Keels.
AKA VIVACITY 650.


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