Dufour 31
TAYLOR · Michel Dufour · 1975
Updated
The Dufour 31 is a 9.32 m heavy displacement racing yacht designed by Michel Dufour and built by TAYLOR, first launched in 1975. It races in Class C.
Length
9.32 m
30′ 7″
Beam
3.29 m
Draft
1.80 m
Displacement
4.9 t
Sail area
47 m²
On the podium
Where a Dufour 31 finishes when she goes racing.
0
Wins
0
Seconds
0
Thirds
8
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 8 starts by 2 boats between 2018 and 2026, counting races with six boats or more.
Recent regattas
The latest events where a Dufour 31 was on the start line, named as the organisers publish them.
"Φιλιας Σ.ε.ν.α.δ.π. - Ν.ο.δ2026- Κασίδι2026
- "Μακης Πανταζης - Αγκιστρι 2025"2025
- "Coscocup 2023 - Lagousses"2023
- Nikolaou Sarikavazi2021
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: 8 races over 10 NM carry a published distance.
Who she races against
The designs a Dufour 31 actually lines up with, most often first. The bar shows how those meetings ended.
Also met, too few times for a figure:
Sun Fast 37 (4 meetings), Sun Odyssey 33.1 (4 meetings), Sun Odyssey 34.2 (4 meetings), First 35 (Berret) (4 meetings), First 38 (6 meetings), Sun Shine 36 (4 meetings), Atlantic 31 (4 meetings), Maxi 95 (3 meetings), Gin Fizz (5 meetings), Discovery 300 (4 meetings), Gib Sea 312 (3 meetings), Catalina 320 (3 meetings), Sun Odyssey 32 (3 meetings), Hallberg-rassy 41 (3 meetings), First 30 (Mauric) (3 meetings), Sun Odyssey 40 (3 meetings), Oceanis 381 (3 meetings), Oceanis 393 (3 meetings), Grand Soleil 39 (Jézéquel) (2 meetings), Grand Soleil 37 (Design) (2 meetings), Dehler 38 (Stadt) (2 meetings), Feeling 920 (2 meetings), Sun Fast 32 (2 meetings), Dufour 38 (2 meetings), Oceanis 390 (2 meetings), Sun Odyssey 26 (2 meetings), Moody 39 (2 meetings), IMX 40 (2 meetings), Sun Odyssey 37.1 (2 meetings), Bavaria Match 35 (2 meetings), Bavaria Cruiser 40 S (2 meetings), Sun Odyssey 36.2 (2 meetings), First 31.7 (2 meetings), Elan 45 (2 meetings), Nek 26 (2 meetings), Sun Odyssey 42.1 (2 meetings), X-332 (2 meetings), Melody (2 meetings)
Some of the boats it races against
How the Dufour 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
4.46
39°
Beam reach
6.94
90°
Broad reach
7.46
135°
Downwind VMG
6.71
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.
This design is even-tempered. It rewards preparation and crew work more than it rewards picking the right day.
Where it gains
Its best ground is to windward in a strong breeze, where it goes better than its measurements say it should.
Where it pays
It falls short cracked off once it pipes up, giving away time it never gets back. That is weight that has to be driven rather than released.
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 0.4 kn either way.
At 10 knots this design makes back more than its rating asks on the beam reach.
How fast is a Dufour 31
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 2.79 | 3.80 | 4.29 | 4.46 |
| 52° | 4.28 | 5.60 | 6.12 | 6.30 |
| 60° | 4.52 | 5.80 | 6.27 | 6.48 |
| 75° | 4.66 | 5.96 | 6.43 | 6.76 |
| 90° | 4.58 | 6.07 | 6.55 | 6.94 |
| 110° | 4.63 | 6.17 | 6.75 | 7.37 |
| 120° | 4.47 | 6.09 | 6.73 | 7.53 |
| 135° | 4.07 | 5.80 | 6.59 | 7.46 |
| 150° | 3.53 | 5.31 | 6.33 | 7.16 |
| Run VMG | 3.05 | 4.63 | 5.79 | 6.71 |
How they are set up
The range each sail spans across the fleet.
Roughly half carry a folding propeller. Crew weight is declared around 430 kg.
Rigging
Dufour 31 rig and sail dimensions
A Dufour 31 carries 10.08 m of mainsail hoist on a 3.06 m boom, a forestay 11.70 m above the deck. Typical figures across the 4 boats measured under the current VPP, with the range each one spans.
Rig
Sails
The spinnaker spreads widest of all — 57 to 64 m² depending on bowsprit and set-up. Before ordering a sail, read the figure on your own measurement record rather than the typical one for the design.