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Sailboat Guide

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Sailboat

Vivacity 21

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

Dimensions

Length Overall
21.25 ft / 6.48 m
Waterline Length
19.25 ft / 5.87 m
Beam
7.16 ft / 2.18 m
Draft
2.33 ft / 0.71 m
Displacement
2,500 lb / 1,134 kg
Ballast
1,100 lb / 499 kg
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
224.00 ft2 / 20.81 m2
Total Sail Area
203.34 ft2 / 18.89 m2
Mainsail
Sail Area
106.88 ft2 / 9.93 m2
P
22.50 ft / 6.86 m
E
9.50 ft / 2.90 m
Mast Height
Foresail
Sail Area
96.46 ft2 / 8.96 m2
I
26.00 ft / 7.92 m
J
7.42 ft / 2.26 m
Est. Forestay Len.
27.04 ft / 8.24 m

Spinnaker

SPL/TPS
ISP

Auxilary Power

Make
?
Model
?
HP
?
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
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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