Corby 29
Microspan · John Corby · 2008
Updated
The Corby 29 is a 8.80 m displacement racing yacht designed by John Corby and built by Microspan, first launched in 2008. It races in Class C.
Length
8.80 m
28′ 10″
Beam
2.82 m
Draft
2.02 m
Displacement
3.2 t
Sail area
52 m²
On the podium
Where a Corby 29 finishes when she goes racing.
On the podium
10%
of 10 starts by 2 boats
Wins
0%
Read from 10 starts by 2 boats between 2024 and 2026, counting races with six boats or more.
Recent regattas
The latest events where a Corby 29 was on the start line, named as the organisers publish them.
66. Yil Donanma Kupasi2026- Republic Cup 2025 Offshore Race2025
Deutsche Bestenermittlung Seesegeln Inshore2024
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: 1 race over 10 NM carry a published distance.
Who she races against
The designs a Corby 29 actually lines up with, most often first. The bar shows how those meetings ended.
Also met, too few times for a figure:
Italia 9.98 (7 meetings), Xp 44 (7 meetings), X-332 (7 meetings), J/88 (7 meetings), Dehler 39 (Judel/Vrolijk) (7 meetings), Melges 20 (7 meetings), Sun Fast 3600 (7 meetings), X-41 (6 meetings), Sun Fast 36 (6 meetings), Luffe 43 (4 meetings), Mat 10 (6 meetings), First 35 (Farr) (3 meetings), Farr 40 (4 meetings), Bolt 37 (2 meetings), Archambault 35 (4 meetings), Farr 280 (2 meetings), Mat 107 (2 meetings), Xp 33 (2 meetings), J/122 (2 meetings), Mat 11.80 (4 meetings), X-35 (2 meetings), First 40 (4 meetings), First 40.7 (6 meetings), Grand Soleil 40 (Paperini) (2 meetings), Farr 30 (2 meetings), J/80 (2 meetings)
Some of the boats it races against
How the Corby 29 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
5.13
36°
Beam reach
7.88
90°
Broad reach
9.08
135°
Downwind VMG
7.66
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 cracked off in a strong breeze, where it goes better than its measurements say it should, and by a margin worth having. It holds that advantage upwind as well, so the gain is not down to one leg of the course.
Where it pays
It falls short across the wind once the breeze fills, 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 0.4 kn either way.
At 10 knots this design makes back more than its rating asks on the upwind.
How fast is a Corby 29
Boat speed in knots, by true wind angle and wind strength.
| Angle | 6 kn | 10 kn | 14 kn | 20 kn |
|---|---|---|---|---|
| Beat VMG | 3.44 | 4.63 | 4.99 | 5.13 |
| 52° | 5.17 | 6.50 | 6.85 | 7.01 |
| 60° | 5.42 | 6.63 | 7.01 | 7.22 |
| 75° | 5.57 | 6.73 | 7.19 | 7.57 |
| 90° | 5.48 | 6.80 | 7.27 | 7.88 |
| 110° | 5.59 | 6.98 | 7.60 | 8.18 |
| 120° | 5.44 | 6.93 | 7.71 | 8.65 |
| 135° | 4.91 | 6.68 | 7.53 | 9.08 |
| 150° | 4.17 | 6.18 | 7.14 | 8.46 |
| Run VMG | 3.61 | 5.39 | 6.55 | 7.66 |
How they are set up
The range each sail spans across the fleet.
Nearly all carry a folding propeller. Crew weight is declared around 510 kg.
Rigging
Corby 29 rig and sail dimensions
A Corby 29 carries 11.65 m of mainsail hoist on a 4.08 m boom, a forestay 12.38 m above the deck. Typical figures across the 3 boats measured under the current VPP, with the range each one spans.
Rig
Sails