Yonne Class

1933
Designer
Harrison Butler
Builder
Clemens of Portsmouth (UK)
Associations
?
# Built
5
Hull Type
Long keel w/trans. hung rudder
Construction
Wood planked

Dimensions

Length Overall
26 4 / 8.1 m
Waterline Length
22 6 / 6.9 m
Beam
8 5 / 2.6 m
Draft
4 5 / 1.4 m
Displacement
12,500 lbs / 5,670 kg
Ballast
? (Lead)

Rig and Sails

Type
Gaff Head Cutter
Reported Sail Area
395 ft2 / 36.7 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
6.36 knots
Sail Area/Displacement
11.73
under powered
Ballast/Displacement
?
Displacement/Length
489.91
ultraheavy
Comfort Ratio
46.86
heavy bluewater boat
Capsize Screening
1.47
better suited for ocean passages

Notes

Prototype was “Yonne”.


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