Oceanis 423
Beneteau · Jean-Marie Finot · 2004
Updated
The Oceanis 423 is a 12.67 m displacement racing yacht designed by Jean-Marie Finot and built by Beneteau, first launched in 2004. It races in Class B. Across the measured fleet it goes better than its own numbers promise, ahead of 15% of the designs it races against. It comes alive as the breeze builds, and gives time away in the light.
Goes better than its own measurements promise, and does it better than 15% of the boats it races against.
78th of 92 in its class.
Updated — Figure recalculated: it now races in Class B.
This design has been found in real race results — 53 starts across 24 events — not only in measurement files.
Length
12.67 m
41′ 7″
Beam
3.90 m
Draft
1.66 m
Displacement
8.8 t
Sail area
87 m²
On the podium
Where a Oceanis 423 finishes when she goes racing.
On the podium
4%
of 53 starts by 4 boats
Wins
0%
Read from 53 starts by 4 boats between 2015 and 2026, counting races with six boats or more.
Recent regattas
The latest events where a Oceanis 423 was on the start line, named as the organisers publish them.
"Πορος 2026"2026- "Νικολαος Σαρικαβαζης 2026"2026
- 32nd Cyclades Regatta - '262026
- ¨16ο Athens Trophy 2026¨2026
- "Αιγινα2026
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: 3 races of 10 NM or less carry a published distance.
Offshore & coastal
4%
of these races end on the podium
Who she races against
The designs a Oceanis 423 actually lines up with, most often first. The bar shows how those meetings ended.
Some of the boats it races against
How the Oceanis 423 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
5.11
42°
Beam reach
8.63
90°
Broad reach
9.29
135°
Downwind VMG
8.03
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 reach once it pipes up, where it outruns what it looks like on paper, and by a margin worth having.
Where it pays
It falls short to windward in light air, giving away time it never gets back.
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 0.6 kn either way.
At 10 knots this design makes back more than its rating asks on the beam reach.
How fast is a Oceanis 423
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 3.10 | 4.41 | 4.99 | 5.11 |
| 52° | 4.90 | 6.67 | 7.38 | 7.57 |
| 60° | 5.27 | 6.98 | 7.66 | 7.87 |
| 75° | 5.51 | 7.21 | 7.88 | 8.30 |
| 90° | 5.38 | 7.37 | 8.05 | 8.63 |
| 110° | 5.51 | 7.60 | 8.44 | 9.24 |
| 120° | 5.34 | 7.48 | 8.40 | 9.50 |
| 135° | 4.73 | 6.97 | 8.12 | 9.29 |
| 150° | 3.98 | 6.11 | 7.55 | 8.73 |
| Run VMG | 3.44 | 5.29 | 6.69 | 8.03 |
How they are set up
The range each sail spans across the fleet.
Roughly half carry a folding propeller. A bowsprit is standard across the fleet. Crew weight is declared around 550 kg.
Rigging
Oceanis 423 rig and sail dimensions
A Oceanis 423 carries 13.30 m of mainsail hoist on a 4.46 m boom, a forestay 14.96 m above the deck and a 5.10 m bowsprit. Typical figures across the 11 boats measured under the current VPP, with the range each one spans.
Rig
Sails
The spinnaker spreads widest of all — 111 to 123 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.