Upwind by MerConcept
- StartsRaces started in finished editions. Non-starters (did not start, withdrawn) are not counted.Computed on 7 Oct 2026.See in the glossary
- 1
- WinsFirst place in the division: same edition, same class.Computed on 7 Oct 2026.See in the glossary
- 0
- PodiumsTop three in the division: same edition, same class.Computed on 7 Oct 2026.See in the glossary
- 0
- Adjusted finish rateLower bound of the 95 % confidence interval (Wilson) of the finish rate: a boat with 1 finish out of 1 start gets 21 %, not 100 %. Greyed out under 5 starts.Computed on 7 Oct 2026.See in the glossary
- 0%Small sample
- raw: 0% · 1 start
- Mean performanceMean of the percentiles of the classified results. Greyed out under 3 classified results.Computed on 7 Oct 2026.See in the glossary
- —
- 0 classified results
Biography
This Multi50 trimaran, now counted in the Ocean Fifty class, was designed by Lalou Roucayrol with Romaric Neyhousser and launched in 2013 in Arkema colours. In June 2013 it won the Route des Princes. On its first transatlantic race, the 2013 Transat Jacques Vabre, it capsized off Portugal on 10 November; it was towed to Madeira, later sailed dismasted to the Canaries, and returned to racing with a new mast.
In 2014 it finished second among the Multi50s in the Route du Rhum, then third in the 2015 Transat Jacques Vabre with César Dohy. In 2016 it was second in the Transat anglaise, then won the Québec-Saint-Malo, the Drheam Cup and the Trophée Prince de Bretagne. Foils were fitted in early 2017 and, with Alex Pella, it won the 2017 Transat Jacques Vabre.
In winter 2018 the boat went through a yard period (solar panels, wind turbine, refreshed electronics) and won the Grand Prix Guyader. On 14 November 2018, running third in the Route du Rhum about 1,000 miles from the finish, it capsized; Lalou Roucayrol was picked up by Pierre Antoine, and the trimaran was found upright a week later, towed to Guadeloupe and brought back to France for repairs.
It then raced as Lalou Multi (2019), Leyton (2020, with Arthur Le Vaillant) and The Arch, after Armel Tripon and a group of investors bought it in 2021. Renamed Les P'tits Doudous in September 2021, it finished fifth in the 2021 Transat Jacques Vabre and capsized in the 1000 Milles des Sables in April 2022. Since 2025 it has carried the name Upwind by MerConcept.
Sillage ratingGlicko-2 rating computed per class from every edition: each result counts as duels against the rest of the fleet, one edition weighing one game. Starts at 1,500; provisional while its deviation is above 110.See in the glossary
Per class; the band shows the uncertainty (±2 deviations, about 95 %).
Computed on 7 Oct 2026.
Technical specs
- Keel typeThe weighted fin under a monohull's hull, which stops it drifting sideways and keeps it upright.See in the glossary
- Not provided
- FoilsAn underwater wing that lifts the boat so it drags less in the water and goes faster.See in the glossary
- Not provided
- Hull lengthLength of the hull alone, without the bowsprit or protruding appendages.See in the glossary
- 15.24m
- Max beamMaximum width of the boat; for a multihull, from one float to the other.See in the glossary
- 14.6m
- DraftHow deep the boat sits: from the waterline to the lowest point of the keel.See in the glossary
- 3.5m
- Air draftHeight of the boat above the water: from the waterline to the top of the mast.See in the glossary
- Not provided
- DisplacementThe mass of the boat ready to sail, equal to the mass of water it displaces.See in the glossary
- 3,800kg
- Upwind sail areaSail area carried when the boat sails towards the wind: mainsail and headsail.See in the glossary
- 180m²
- Downwind sail areaSail area carried with the wind on the beam or from behind, with the big headsails.See in the glossary
- 285m²
Names and sail numbers
What the boat was called and the numbers it sailed under.
Life timeline
Names, skippers, shipyards and races, in one place.
Name
Races
- Podium
- Finished
- Retired
- Yard work
Detailed timeline
2025
Renamed
Upwind by MerConcept
2022
Capsize · 10 April 2022
Capsize during the 1000 Milles des Sables
The trimaran capsizes off A Coruña; Armel Tripon is quickly rescued and the boat is towed back to France.
2021
Renamed
Les P'tits Doudous
Sale · 2021
Bought by Armel Tripon and investors
Armel Tripon and a group of about twenty investors buy the trimaran from Lalou Roucayrol.
SkipperThe sailor in command of the boat, responsible for it in the race.See in the glossary · since 2021
Armel TriponRenamed
The Arch
2020
SkipperThe sailor in command of the boat, responsible for it in the race.See in the glossary · 2020
Arthur Le VaillantRenamed
Leyton
2019
Renamed
Lalou Multi
2018
Capsize · 14 November 2018
Capsize during the 2018 Route du Rhum
Running third about 1,000 miles from the finish, the trimaran capsizes and the skipper is picked up by Pierre Antoine. The boat is found upright on 21 November.
4 November 2018 · raced as Arkema
Route du Rhum 2018RetiredThe boat started but did not finish the race (DNF).See in the glossary
2013
Capsize · 10 November 2013
Capsize during the 2013 Transat Jacques Vabre
The trimaran capsizes off Portugal; the crew stays aboard for three days before being towed to Madeira.
Launch · 2013
Arkema launched
Multi50 trimaran designed by Lalou Roucayrol and Romaric Neyhousser, launched in Arkema colours.
SkipperThe sailor in command of the boat, responsible for it in the race.See in the glossary · 2013 – 2019
Lalou RoucayrolLaunched as
Arkema
In figures
Computed from the results in the directory.
- LongevityYears from launch to the last start, starts, names carried and skippers.See in the glossary
- 5 years
- 1 starts · 6 names · 1 skippers
Show the data
| Other | |
|---|---|
| Retirement causes | 1 |
Race record
Page reliability
2 sources · updated 7 Oct 2026