Gib'sea 30

1975 — 1979
Designer
Joubert-Nivelt
Builder
Gib'sea/Gibert Marine
Association
Half Ton Class
# Built
138
Hull Type
Fin with rudder on skeg
Construction
FG w/balsa core

Dimensions

Length Overall
29 2 / 8.9 m
Waterline Length
22 11 / 7 m
Beam
10 2 / 3.1 m
Draft
5 6 / 1.7 m
Displacement
7,270 lbs / 3,298 kg
Ballast
?
drawing

Rig and Sails

Type
Masthead Sloop
Reported Sail Area
536 ft2 / 49.8 m2
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Mast Height
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?

Calculations

Hull Speed
6.42 knots
Sail Area/Displacement
22.85
high performance
Ballast/Displacement
?
Displacement/Length
267.8
moderate
Comfort Ratio
20.27
coastal cruiser
Capsize Screening
2.11
better suited for coastal cruising

Notes

Based on a IOR 1/2 ton prototype ‘Physale’ (1974).


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