The D35 was developed as a response to the ever-increasing costs and extremism in multihull sailing on Lake Geneva. A group of owners, including Ernesto Bertarelli, got together with designer Sebastien Schmidt to bring to life a fast, high-tech, but affordable one-design catamaran. In 2004, the first eight boats were launched, since which the class has gone up to twelve boats built.


When the first D35s were launched in 2004, an annual circuit was created. The Julius Baer Challenge combined the classic Lake Geneva regattas – including the Bol d’Or – with several Grand Prix events exclusive to the D35 class. 

Then called the Vulcain Trophy until 2014, the championship is from 2015 known as the D35 Trophy. As well as the Bol d’Or – the classic end-to-end race on Lake Geneva – it includes the famous Genève-Rolle-Genève, and six Grands Prix. With points awarded for each event, competition for first place on the championship podium is often fierce.

Alinghi is extremely proud to have won five D35 titles, continuing a proud tradition of Lake Geneva sailing.

Explore the D35 Trophy >


The design of the D35 is an evolution of Sebastien Schmidt’s previous work, the 40ft Alinghi catamaran Le Black, with a central pod used to tie the structure together and withstand the stresses from the platform and rig. The structure is light, which – when coupled with a wing mast that can be rotated up to 45 degrees and a maximum of 230m² sailplan – means that the boat can hit top speeds of some 27 knots.

  • Construction: Decision SA
  • Length (Overall): 14.95m
  • Length (Hull): 10.81m
  • Width (Overall): 8.74m
  • Width (Hull): 6.89m
  • Dry Weight: 1,200kg
  • Main Sail Area: 81.6m²
  • Solent Area: 40.7m²
  • Drifter Area: 80m²
  • Gennaker Area: 150m²
  • Top Speed: 27 knots
  • Crew: mini 5 - maxi 7, 470kg (maximum) 

D35 News

A double win

10 September, 2017

After 11 races of about 30 minute duration each and after a duel that came down to the final metres, Alinghi beat Ylliam Comptoir Immobilier by one point to win the Alinghi Grand Prix of Crans-près-Céligny. Zen Too took the final place on the podium. Yves Detrey, bowman, said: "It was tense to the end with Ylliam. We started the day tied, but already lost three points on them in the first race. Then we gained one back in the second race, and then two in the third, to leave us once again tied. "In the very last race, we fighted a bit at the start and we took the first advantage on the upwind leg. They managed to come back ahead of us just before the last leg. In the final downwind to the finish, we passed back in front of them with a better gybe. To win this Grand Prix, we had to finish in the top five and ahead of them in this last race. This we did - we were 4th and they were behind. Ylliam sailed really well, but in the end, we stayed ahead, and this makes me really happy." Pierre-Yves Jorand, mainsail trimmer: "It started this morning with a 5th place finish, but fortunately for us, it was ended really well. Ylliam Comptoir Immobilier's competitive sailing made for a great weekend and they certainly gave us a hard time. They sailed very well. Hats off to them! They were fast and were smart. In the end, these regattas are serious business. In these monotypes, we know that every detail counts. It was a superb Grand Prix over three days." With this new victory and a sufficient points gap on its pursuers, Alinghi is guaranteed to win the D35 Trophy 2017 without even needing to run the last event. But, as Arnaud confirmed tonight, "the team will still be fighting at the start in two weeks time because "there is always more to learn". Click here to be onboard the D35 seconds after crossing the finish line to listen to all the comments (in French) from Yves, Pierre-Yves, Arnaud and Nicolas. The next meeting on the lake is on Friday 22 and Saturday 23 September for the closing Grand Prix in the D35 Trophy organized by our club, Société Nautique de Genève. Alinghi Grand Prix in Crans-près-Céligny - Overall standings after 11 races (the worst score being discarded) : 1 - Alinghi: 24 points 2 - Ylliam comptoir Immobilier: 25 points  3 - Zen Too: 34 points 4 - Racing Django: 36 points 5 - Realteam: 49 points Click here for more results and the overall standings of the Championship after seven Acts. To find out more Hashtags for the event #GoAlinghiGo  //  #D35Trophy If you want to know more about how to follow the racing, about Alinghi’s team, or just about this regatta in general, you will find all that you need in this news story. Photo credits: Loris von Siebenthal

Alinghi D35 GP in Crans: Windy and rainy, tiring but leading

9 September, 2017

In Formula 1, the tyres are changed when it's raining. In sailing, it's just the crew's clothes that change. Remember, as long as there is wind, a sailor is happy! After two races yesterday, five races were held today in a steady wind that tested the physicality of the 54 sailors competing in the Alinghi Grand Prix in Crans-près-Céligny. After a great start to the regatta (a 2nd, three 1st place and a 3rd), Alinghi finished the day with two relatively disappointing results. Ylliam-Comptoir Immobilier took the opportunity to draw level in the overall points position. Six points behind lie Zen Too, with Racing Django a point further back. Nils Frei, headsail trimmer, summed up the day: "The wind blew continuously between 11 and 18 knots. In a D35, that's hard work. We sailed with a reef in the main for four of the five races. We started the day very well with two wins without a worry. But then, in a more shifty wind, which is typical with the South-West, we experienced many changes in the wind direction, which challenged us and forced us on the back foot. As a result, we are no longer leading alone, but with the tiebreaker rules in place we are at an advantage to Ylliam, having won more races than them By the way, to practice your French and learn what the word « empannage » means (« gybe » in English), we attempt to explain it at the end of the day interview with Nils and Coraline. The finale of the Grand Prix Alinghi will be taking place tomorrow between 11:30 and 16:00 on the Lake, in front of the Club Nautique de Crans. Alinghi Grand Prix in Crans-près-Céligny - Overall standings after seven races (the worst score being discarded) : 1 - Alinghi: 13 points 2 - Ylliam comptoir Immobilier: 13 points  3 - Zen Too : 19 points 4 - Racing Django: 20 points 5 - Realteam: 27 points 7 - Mobimo: 39 points 8 - Okalys : 40 points 9 - Phaedo2 : 42 points To find out more Hashtags for the event #GoAlinghiGo  //  #D35Trophy If you want to know more about how to follow the racing, about Alinghi’s team, or just about this regatta in general, you will find all that you need in this news story. Photo credits: Loris von Siebenthal

Alinghi wins and consolidates its pole position in the D35

3 September, 2017

The red-white-and black Lac Leman multihull is entering the second half of the season in great and beautiful form, securing today, after the summer break, a victory in the sixth stage of the 2017 D35 Trophy, which was organised by the Geneva Yacht Club. Having recorded two race wins and two second places, the team dominated amidst various wind ranges.  Special mention must go to the young Arnaud Grange (15 years of age), who was at the helm of Okalys. He and his crew recorded a superb second place, while Zen Too occupied the third step of the podium. Ernesto Bertarelli said: "I was unable to be onboard for the Bol d'Or Mirabaud and the GC32 events this summer. It’s therefore really satisfying to be here, to find a team at the top of its form and to achieve such a good result." For Nils Frei, who spent his summer on the GC32 in the Extreme Sailing Series, returning to the D35 required some adaptation in terms of way of sailing: "The sails are a little bigger than the GC32, so there's more effort, but less maneuvering around the marks. There’s some compensation, though. To have this weekend’s result, however, we’ve got to say that the transition from one boat to another went rather well!" There is now a few days of rest for the team before they return to the lake for Act 7 of the D35 Trophy in the Alinghi Grand Prix of Crans-Près-Céligny (from 8 to 10 September).   Overall standings from Act 6 – Open du Yacht Club : 1st - Alinghi: 4 points 2nd - Okalys: 8 points  3rd - Zen Too: 10 points 4th - Ylliam Comptoir Immobilier: 11 points 5th - Racing Django: 13 points Click here for more results and the overall standings of the Championship after six Acts. Hashtags for the event #GoAlinghiGo  //  #D35Trophy To find out more If you want to know more about how to follow the racing, about Alinghi’s team, or just about this regatta in general, you will find all that you need in this news story. Photo credits: Alinghi

Alinghi wins its 7th Bol d'Or!

17 June, 2017

After 5h11m of racing in dream conditions and a real match against Ladycat, Alinghi scored a seventh victory in the iconic Bol d'Or. At the same time, Pierre-Yves Jorand has now equaled the record number of victories for individual sailors, drawing level with Philippe Durr and Philippe Stern. After crossing the finishing line, Pierre-Yves said: "It was an incredible regatta, a duel from start to finish with a great team and great opponents. Last week we lost by a single second to Swisscom in the Genève-Rolle-Genève and so we were certainly hungry. This great victory comes at the right time!” For Nils Frei, the key to the race was the Bouveret rounding: "We passed in second place, just seconds behind Ladycat, but were the first to engage the tack to take us heading back to the Swiss side of the lake and to get the Bise back. It was so rare to have the breezes we did across all of the Lake, but it allowed us to record one of the quicker times in the race’s history – the record being 5h01m. It was a real match with Spindrift, with so little in it." Yves Detrey, known not to be the biggest fan of the long distance races on the lake, did not hide his joie de vivre this time around: "If it's like this next year, I will sign-up right away!" Arnaud Psarofaghis, helmsman of the D35 on this occasion, said: "I am really proud to have won with this team, who are all fantastic. For me the key to the regatta was at the entrance to the ‘Petit-Lac', close to Geneva. We chose a different strategy to Spindrift and it was a choice that paid off." Ernesto Bertarelli: "Congratulations to our Team Alinghi for the great achievement on Lake Geneva today – winning the 79th Bol D’or Mirabaud! It was a fantastic day of sailing, with the famous "Bise" as strong as ever, a focus on skill and tactics and very little place for luck. Congratulations also to Ladycat and its team for being an exceptional competitor in this exceptional race. Every year we seem to encourage each other to do even better, which pushes both teams to perform at their best and is wonderful for the sport.   “I would like to pay a special tribute to Arnaud with whom I have the pleasure to share the helm both on the ESS and the D35 Trophy, as well as to the rest of the team, Pierre-Yves, Nicolas, Nils, Coraline, Yves & João who raced today on board as 7th crew and who is normally part of our shore crew who did an amazing job to keep our boat on top shape! Thank you also to Claudy and David who made sure this victory was technically possible. “And well done to all the boats who took part in the race today, many of which are still on the lake and sailing. “I am really proud to be the Vice-Commodore of SNG which organizes the Bol d'Or every year and I thank also all the volunteers who make this very special event so successful."   The crew will now dedicate their summer to four races in the Extreme Sailing Series (ESS), before returning to the D35 Trophy in September for the last three events of the season. Click here to watch the crew's reactions reaching the dock at SNG and being interviewed on the podium. The next event for the Alinghi team is Act 3 of the ESS in Madeira, from 29 June to 2 July. Overall real-time ranking - Bol d'Or Mirabaud 2017: 1. D35 Alinghi: 5h11'00 2. M1 Ladycat Powered by Spindrift Racing: 5h12'34 3. GC32 Realteam: 5:19:23 4. D35 Zen Too: 5h22'49 5. D35 Okalys: 5:23:54 Provisional general ranking of the D35 Trophy (the worst score being discarded): 1. Alinghi: 4 points 2. Zen too: 11 points 3. Ylliam Comptoir Immobilier: 13 points 4. Swisscom: 17 points 5. Mobimo: 18 points   Hashtags for the event #GoAlinghiGo  //  #BOM17  //  #D35Trophy To find out more  // If you want to know more about how to follow the racing, about Alinghi’s team, or just about this regatta in general, you will find all that you need in this news story. Photo credits: BOM2017-Nicolas Jutzi et EPmedias