JPK 10.50
JPK Composites · Jacques Valer · 2025
Updated
The JPK 10.50 is a 10.43 m displacement racing yacht designed by Jacques Valer and built by JPK Composites, first launched in 2025. It races in Class C.
Length
10.43 m
34′ 3″
Beam
3.54 m
Draft
2.20 m
Displacement
3.5 t
Sail area
73 m²
On the podium
Where a JPK 10.50 finishes when she goes racing.
3
Wins
1
Seconds
1
Thirds
7
Starts
Not enough races yet for a percentage — these are the counts so far. We keep collecting results, so this will fill in.
Read from 7 starts by 2 boats between 2026, counting races with six boats or more.
Recent regattas
The latest events where a JPK 10.50 was on the start line, named as the organisers publish them.
Island Offshore - Race to the Arctic2026
Int. Deutsche Meisterschaft Offshore Seesegeln2026
Raced one we are missing?
Report a regattaRound the buoys, or offshore
A short windward-leeward and a night at sea ask different things of a boat. Here is how this one does in each.
Round the buoys
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Not enough data yet: no races of 10 NM or less carry a published distance.
Offshore & coastal
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Not enough data yet: no races over 10 NM carry a published distance.
Who she races against
The designs a JPK 10.50 actually lines up with, most often first. The bar shows how those meetings ended.
Also met, too few times for a figure:
Dehler 44 (4 meetings), Grand Soleil 43 (Carkeek) (4 meetings), Swan 45 (4 meetings), Landmark 43 (4 meetings), Dehler 42 (4 meetings), Xp 38 (4 meetings), Arcona 410 (4 meetings), Arcona 430 (4 meetings), Elan 410 (4 meetings), Fast 42 (4 meetings), First 40 (3 meetings), Dehler 41 (Voogd) (3 meetings), Mat 122 (3 meetings), X-35 (3 meetings), Swan 46 (3 meetings), Carkeek 47 (3 meetings), Sun Fast 3600 (3 meetings), Dehler 41 (Judel/Vrolijk) (2 meetings), Mat 118 (2 meetings)
Some of the boats it races against
How the JPK 10.50 has fared against each of them, boat against boat on corrected time. Ordered by how often the two meet, not by who wins.
Speed at every angle
The shape of this design's speed, drawn from the measured fleet. Pick a wind and watch it stretch.
Upwind VMG
5.50
38°
Beam reach
9.45
90°
Broad reach
12.68
135°
Downwind VMG
9.06
170°
Speed in knots at 20 knots of true wind. Green marks the angles that pay: the closest useful beat and the deepest run worth sailing.
Where it wins and where it pays
Every boat is judged against its own measurements — length, weight, sail area. The quicker those say it should be, the more it has to deliver just to break even. Going fast is not enough: it has to go faster than its own numbers promised.
The stronger it blows, the better this design looks. On a windy coastal course it is in its element; on a light-air windward-leeward it has to be sailed well to hold on.
Where it gains
Its best ground is on a broad reach once it pipes up, where it outruns what it looks like on paper, and by a margin worth having. It holds that advantage running deep as well, so the gain is not down to one leg of the course.
Where it pays
There is no condition where it falls away badly, which is worth something over a season of mixed weather.
Above the line it delivers more than promised and gains on the fleet. Below, it falls short. Move the wind: plenty of boats sit on one side in the light and the other when it blows.
Full width is 2.8 kn either way.
At 10 knots this design makes back more than its rating asks on the downwind.
How fast is a JPK 10.50
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 3.66 | 4.96 | 5.40 | 5.50 |
| 52° | 5.52 | 7.11 | 7.59 | 7.78 |
| 60° | 5.78 | 7.27 | 7.86 | 8.12 |
| 75° | 5.95 | 7.45 | 8.19 | 8.70 |
| 90° | 6.09 | 7.67 | 8.48 | 9.45 |
| 110° | 6.17 | 7.96 | 9.00 | 10.91 |
| 120° | 6.05 | 7.86 | 9.39 | 11.63 |
| 135° | 5.46 | 7.47 | 8.89 | 12.68 |
| 150° | 4.61 | 6.76 | 8.00 | 10.46 |
| Run VMG | 3.99 | 5.86 | 6.94 | 9.06 |
How they are set up
The range each sail spans across the fleet.
Nearly all carry a folding propeller. A bowsprit is standard across the fleet. Crew weight is declared around 440 kg.
Rigging
JPK 10.50 rig and sail dimensions
A JPK 10.50 carries 13.66 m of mainsail hoist on a 4.63 m boom, a forestay 13.51 m above the deck and a 5.79 m bowsprit. Typical figures across the 2 boats measured under the current VPP, with the range each one spans.
Rig
Sails