Blanchard Knockabout JR.

1934 — 1948
Designer
Ben Seaborn
Builder
Blanchard Boat Co.
Associations
?
# Built
25
Hull Type
Fin with rudder on skeg
Construction
Wood Planked

Dimensions

Length Overall
20 0 / 6.1 m
Waterline Length
16 0 / 4.9 m
Beam
6 3 / 1.9 m
Draft
2 3 / 0.7 m
Displacement
1,400 lbs / 635 kg
Ballast
500 lbs / 227 kg (Iron)
drawing

Rig and Sails

Type
Fractional Sloop
Reported Sail Area
210 ft2 / 19.5 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
5.36 knots
Sail Area/Displacement
26.85
high performance
Ballast/Displacement
35.71
less stiff, less powerful
Displacement/Length
152.59
light
Comfort Ratio
10.88
lightweight racing boat
Capsize Screening
2.23
better suited for coastal cruising

For Sale

Have a sailboat to sell?
List it for free and it will show up here.

Subscribe

Get occassional updates about new features or featured sailboats.
You can opt out or contact us any time.