J/Boats J/40
A 12.47 m offshore performance cruiser designed by Al Johnstone and built by J/Composites in the Vendée, France, with twin wheels, a fixed carbon bowsprit and a choice of three-cabin or two-cabin layouts. It made its UK debut at the 2026 Southampton International Boat Show.
Length overall12.47 m
Beam3.86 m
Draught2.2 m
Displacement7,665 kg
PriceNot publishedJ/Boats does not publish a price
Specifications
Dimensions
| Length overall | 12.47 m (40.9 ft) source |
|---|---|
| Length waterline | 11.26 m (37.0 ft) source |
| Beam | 3.86 m (12.7 ft) source |
| Standard draught | 2.2 m (7.2 ft) source |
| Shoal draught | 1.8 m (5.9 ft) source |
| Mast height | 19.45 m (63.8 ft) source |
Layout
| Layouts | 3 cabins / 1 head (standard) or 2 cabins / 2 heads source |
|---|---|
| Steering | Twin wheels source |
| Bowsprit | Fixed carbon, for asymmetric spinnaker or Code sail source |
| Builder | J/Composites, Vendée, France source |
| Interior design | Isabelle Racoupeau with J/Composites source |
Sources: jboats.com J/40 tech specs; jboats.com J/40 page; Southampton International Boat Show 2026 boat debuts.
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FAQ
How long is the J/40?
12.47 m (40.9 ft) overall, with a waterline length of 11.26 m, according to J/Boats.
What draught does the J/40 have?
2.2 m with the standard keel or 1.8 m with the shoal keel.
Where is the J/40 built?
At the J/Composites yard in the Vendée region of France.