Class CSemi-displacementPerformance

First Class 10

Beneteau · Jean-Marie Finot · 1983

Updated

The First Class 10 is a 10.38 m semi-displacement racing yacht designed by Jean-Marie Finot and built by Beneteau, first launched in 1983. It races in Class C. Across the measured fleet it goes better than its own numbers promise, ahead of 13% of the designs it races against. It comes alive as the breeze builds, and gives time away in the light.

First Class 10 - Jean-Marie Finot - BeneteauP 12.25 mLOA 10.38 m
Race Edge13Proven in racing

Goes better than its own measurements promise, and does it better than 13% of the boats it races against.

138th of 159 in its class.

Under 10 kn
22
10–16 kn
41
Over 16 kn
85

This design has been found in real race results — 4 starts across 1 event — not only in measurement files.

Length

10.38 m

34′ 1″

Beam

3.06 m

Draft

1.83 m

Displacement

3.2 t

Sail area

63 m²

On the podium

Where a First Class 10 finishes when she goes racing.

0

Wins

0

Seconds

0

Thirds

4

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 4 starts by 1 boat between 2026, counting races with six boats or more.

Recent regattas

The latest events where a First Class 10 was on the start line, named as the organisers publish them.

  • ItalyCampionato Invernale Citta' di Bari2026

Raced one we are missing?

Report a regatta

Round 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: 2 races of 10 NM or less carry a published distance.

Offshore & coastal

—

Not enough data yet: 2 races over 10 NM carry a published distance.

Who she races against

The designs a First Class 10 actually lines up with, most often first. The bar shows how those meetings ended.

This design aheadRival ahead
Surprise0%ahead in 0 of 8 meetings, 4 races

Also met, too few times for a figure:

Melges 24 (4 meetings), Dehler 30 OD (4 meetings), Comet 36 (4 meetings), First 35 (Farr) (4 meetings), Elan 410 (4 meetings), Sun Odyssey 42 (Lombard) (4 meetings), Bavaria Match 35 (4 meetings), X-119 (4 meetings), Elan 333 (4 meetings), Bavaria 42 (4 meetings)

Some of the boats it races against

How the First Class 10 has fared against each of them, boat against boat on corrected time. Ordered by how often the two meet, not by who wins.

First Class 10 vs Surpriseahead 0% of 8 head-to-heads

Speed at every angle

The shape of this design's speed, drawn from the measured fleet. Pick a wind and watch it stretch.

36930°60°90°120°150°WIND9.9

Upwind VMG

5.25

38°

Beam reach

8.56

90°

Broad reach

9.93

135°

Downwind VMG

7.97

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 is a boat that wants breeze. 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 running deep as well, so the gain is not down to one leg of the course.

Where it pays

It falls short downwind 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.

True wind
Upwind+0.20 kn
Beam reach+0.06 kn
Broad reach-0.03 kn
Downwind-0.08 kn

Full width is 0.8 kn either way.

At 10 knots this design makes back more than its rating asks on the upwind.

How fast is a First Class 10

Boat speed in knots, by true wind angle and wind strength.

Angle6 kn10 kn14 kn20 kn
Beat VMG3.504.795.125.25
52°5.346.837.197.37
60°5.627.017.407.62
75°5.797.147.728.10
90°5.677.207.878.56
110°5.517.308.189.14
120°5.337.198.219.85
135°4.746.807.889.93
150°3.956.077.378.96
Run VMG3.425.276.637.97

How they are set up

The range each sail spans across the fleet.

Mainsail30 m² – 35 m²
Headsail24 m² – 36 m²
Gennaker57 m² – 74 m²
Spinnaker63 m² – 80 m²

Nearly all carry a folding propeller. Crew weight is declared around 570 kg.

Rigging

First Class 10 rig and sail dimensions

A First Class 10 carries 12.25 m of mainsail hoist on a 4.25 m boom, a forestay 11.50 m above the deck and a 4.60 m bowsprit. Typical figures across the 10 boats measured under the current VPP, with the range each one spans.

Rig

Mainsail hoistP12.25 m11.71 – 12.54
Boom lengthE4.25 m4.20 – 4.65
Forestay heightIG11.50 m11.28 – 13.07
Fore triangle baseJ3.90 m3.85 – 3.96
Spinnaker hoistISP11.67 m11.30 – 13.14
BowspritTPS4.60 m3.90 – 4.65
Boom above deckBAS1.35 m1.22 – 1.37

Sails

Mainsail31.5 m²29.7 – 34.9
Headsail31.0 m²23.6 – 35.6
Gennaker66.5 m²57.4 – 73.6
Spinnaker73.4 m²63.2 – 80.4

The spinnaker spreads widest of all — 57 to 74 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.