Archambault 31
Archambault · Joubert/Nivelt · 2009
Updated
The Archambault 31 is a 9.55 m semi-displacement racing yacht designed by Joubert/Nivelt and built by Archambault, first launched in 2009. It races in Class C.
Length
9.55 m
31′ 4″
Beam
3.24 m
Draft
1.98 m
Displacement
3.3 t
Sail area
54 m²
On the podium
Where a Archambault 31 finishes when she goes racing.
0
Wins
0
Seconds
0
Thirds
3
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 3 starts by 1 boat between 2024 and 2025, counting races with six boats or more.
Recent regattas
The latest events where a Archambault 31 was on the start line, named as the organisers publish them.
Garmin ORC DH European Championship2025- ORC DH World Championship2024
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
—
Not enough data yet: no races of 10 NM or less carry a published distance.
Offshore & coastal
—
Not enough data yet: 3 races over 10 NM carry a published distance.
Who she races against
The designs a Archambault 31 actually lines up with, most often first. The bar shows how those meetings ended.
Also met, too few times for a figure:
First 34.7 (3 meetings), X-34 (3 meetings), Linjett 33 (3 meetings), First 30 (Kouyoumdjian) (3 meetings), X-362 (4 meetings), First 36.7 (7 meetings), First 35 (Farr) (4 meetings), Inferno 31 (2 meetings), Bavaria 35 (2 meetings), Fareast 28 (2 meetings), Ridas 35 (2 meetings), Seascape 27 (2 meetings), X-332 (2 meetings), Farr 30 (1 meeting), Bavaria Match 38 (1 meeting), Elan 37 (2 meetings), Xp 33 (1 meeting), Farr 31 (1 meeting), X-35 (2 meetings), Sun Fast 3200 (1 meeting), Elan 333 (1 meeting), X-95 (1 meeting), Arcona 370 (1 meeting), J/92 (1 meeting), A 31 (1 meeting)
Some of the boats it races against
How the Archambault 31 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
5.16
37°
Beam reach
8.39
90°
Broad reach
10.10
135°
Downwind VMG
7.75
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.
It needs pressure to show what it can do. 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 when it blows, where it goes better than its measurements say it should, and by a margin worth having. It holds that advantage downwind 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 1.0 kn either way.
At 10 knots this design makes back more than its rating asks on the downwind.
How fast is a Archambault 31
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 3.53 | 4.74 | 5.06 | 5.16 |
| 52° | 5.38 | 6.75 | 7.06 | 7.19 |
| 60° | 5.67 | 6.92 | 7.28 | 7.44 |
| 75° | 5.92 | 7.10 | 7.58 | 7.92 |
| 90° | 6.02 | 7.26 | 7.84 | 8.39 |
| 110° | 5.87 | 7.39 | 8.20 | 9.13 |
| 120° | 5.72 | 7.31 | 8.29 | 9.61 |
| 135° | 5.15 | 6.99 | 7.96 | 10.10 |
| 150° | 4.34 | 6.38 | 7.38 | 8.77 |
| Run VMG | 3.76 | 5.53 | 6.59 | 7.75 |
How they are set up
The range each sail spans across the fleet.
Roughly half carry a folding propeller. Crew weight is declared around 580 kg.
Rigging
Archambault 31 rig and sail dimensions
A Archambault 31 carries 12.09 m of mainsail hoist on a 4.07 m boom, a forestay 11.98 m above the deck and a 4.72 m bowsprit. Typical figures across the 4 boats measured under the current VPP, with the range each one spans.
Rig
Sails