J121


The J121 is a 40.0ft fractional sloop designed by Alan Johnstone and built in fiberglass by J Boats since 2018.

The J121 is a light sailboat which is a very high performer. It is very stable / stiff and has a low righting capability if capsized. It is best suited as a racing boat.

See all sailboats built by J Boats

See all sailboats designed by Alan Johnstone

J121 for sale elsewhere on the web:

Main features


Model J121
Length 40 ft
Beam 12.30 ft
Draft 7.75 ft
Country United states (North America)
Estimated price $ 0 ??

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Ratios


Sail area / displ. 29.54
Ballast / displ. 40.34 %
Displ. / length 115.98
Comfort ratio 17.55
Capsize 2.16

Hull


Hull type Monohull fin keel with bulb and spade rudder
Construction Fiberglass
Waterline length 35.78 ft
Maximum draft 7.75 ft
Displacement 11900 lbs
Ballast 4800 lbs
Hull speed 8.02 knots

We help you build your own hydraulic steering system - Lecomble & Schmitt

Rigging


Rigging Fractional Sloop
Sail area (100%) 959 sq.ft
Air draft 0 ft ??
Sail area fore 393.29 sq.ft
Sail area main 416 sq.ft
I 51.41 ft
J 15.30 ft
P 50 ft
E 16.64 ft

Engine


Nb engines 1
Total power 30 HP
Fuel capacity 0 gals

Accommodations


Water capacity 0 gals
Headroom 0 ft
Nb of cabins 0
Nb of berths 0
Nb heads 0

Builder data


Builder J Boats
Designer Alan Johnstone
First built 2018
Last built 0 ??
Number built 0 ??

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