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Sailboat

Island Packet 31

1983 — 1989

Island Packet 31 is a 31.00 ft / 9.45 m sailboat designed by Robert K. Johnson and built by Island Packet Yachts between 1983 and 1989.

Designer
Robert K. Johnson
Builder
Island Packet Yachts
Hull Type
Long Keel
Construction
FG
Associations
Island Packet Yacht Owners

Dimensions

Length Overall
31.00 ft / 9.45 m
Waterline Length
27.75 ft / 8.46 m
Beam
11.60 ft / 3.54 m
Draft
4.00 ft / 1.22 m
Displacement
11,000 lb / 4,990 kg
Ballast
4,500 lb / 2,041 kg
Ballast Type
?
drawing
photo
drawing

Rig and Sails

Type
Cutter
Reported Sail Area
530.00 ft2 / 49.24 m2
Total Sail Area
530.30 ft2 / 49.27 m2
Mainsail
Sail Area
238.00 ft2 / 22.11 m2
P
34.00 ft / 10.36 m
E
14.00 ft / 4.27 m
Mast Height
Foresail
Sail Area
292.30 ft2 / 27.16 m2
I
39.50 ft / 12.04 m
J
14.80 ft / 4.51 m
Est. Forestay Len.
42.18 ft / 12.86 m
Mizzen
PY
EY

Auxilary Power

Make
?
Model
?
HP
27
Type
Diesel
Fuel Capacity
25 gals / 95 L

Accomodations

Water Capacity
70 gals / 265 L

Calculations

Hull Speed
7.06 knots
Sail Area/Displacement
17.14
good performance
Ballast/Displacement
40.91
stiffer, more powerful
Displacement/Length
229.8
moderate
Comfort Ratio
22.45
coastal cruiser
Capsize Screening
2.09
better suited for coastal cruising

Notes

Keel/CB also available.
Draft - BU: 3.0’/BD: 7.0’

Suggest Improvements
Source: sailboatdata.com / CC BY

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