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RAFALE I 2013-2016 Catamaran Class-C Made up of engineering students from the École de technologie supérieure de Montréal, it was in September 2013 that the Catamaran Class-C ÉTS project was launched with the aim of designing, building and sailing a state-of-the-art sailboat. The objective is ambitious: to participate as the first student team at the prestigious Little Cup of America. The team successfully rose to the challenge, taking part in the 27th Little Cup, in Geneva, Switzerland, in September 2015. Rafale's performance amazed many and attracted cameras from all over the world! Rafale ÉTS earned sixth place in the championship, the Spirit of the Hydros Foundation award, as well as the title of Sailor of the Year 2015 from the Fédération de Voile du Québec GOAL Our ambition was to compete with experienced teams. We were the only students in the circuit, the other teams being professional and sometimes having a budget of several million dollars. The hard work delivered by the members of the project allowed us to present a competitive boat to the Little Cup 2015 . We were not only the first Quebec team to participate, but also the first university team to present such a project. ​ Rafale Class-C is an impressive, innovative catamaran, mounted on hydrofoils and equipped with a rigid wing. The boat was built with a minimal budget and entirely on a volunteer basis, which greatly sets our team apart from others. Marc Farmer and Trevor Parekh, the navigation team, managed to lift the team to sixth place in Geneva. We were also named Sailor of the Year by the 2015 Sailing Federation and won the "Spirit of the Hydros Foundation" award. CLASS-C The C-Class has been around since the 1960s. It is one of the most innovative nautical categories. The boats are catamarans measuring 25 feet in length and 14 feet wide. They have the reputation of being among the fastest boats on closed circuits (“Inshore”). Thanks to the very succinct and permissive regulations, they are also at the origin of many innovations in the field of sailing, in particular the wing masts and the rigid sails which have been the symbols of the class for a very long time. Since 2011, they have also been behind the development of hydrofoils for multihulls.

RAFALE III.5 2022-... Moth The realization of this project requires us to develop and use, as a team, skills in a wide range of areas, from the manufacture of composites (manufacturing the boat) to social relations (search for sponsorships, networking) in through computer design (mechanical design), electronics and programming (embedded data collection system). ​ With around twenty members driven by unfailing cohesion, the Rafale team is today a large family motivated by the same objectives. Visit our blog and follow the creation of Rafale IV February 2023 March 2023 February 2023

MARCH SUM-UP March, another way to make your day. Only three months until the competition and, despite the endless Canadian winter, the team is still active to carry out its different projects: ​ 🖌 DESIGN ​ Achievements: Designing work for R3.5 is completed! The climbing ladder has been dimensioned to bear important charges whilst having the optimal shape/minimal weight. Its validated final design required flax fiber reinforced beams prototypes subjected to numerous mechanical tests. In parallel, R4 design is progressing well. Tests on materials (composite flax fiber / Elium thermoplastic resin) have provided fresh data for the designing of the new hull and parts expected to use flax reinforcements. A simplified DVPP (Dynamic Velocity Prediction Program) has also been developed to forecast the behavior of our concept boat. Work in progress: Following the acquisition of a used sail for R3.5 and the redesign of our ladders, some parts of our rigging (like the boom vang) are being revised and redesigned while keeping in mind the necessity of interchangeability with the old ladders/sail. The male mast/male base issue is being resolved by designing a new female, easy use and 3D printed (with a flexible polyurethane filament) mast base. R4 hull design is almost ready. The analysis of its generated drag/lift with flow simulation is in progress while starting a finite element analysis (behavior under physical effects) on the hull’s structure. Future goals: Next great step for Rafale 4 will concern the hull’s mold design and manufacturing followed by the latter’s infusion. Conception et design avec Martin et Quentin Conception et design avec Martin et Quentin Conception et design avec Martin et Quentin Conception et design avec Martin et Quentin 1/1 🛠 MANUFACTURING Achievements: If the hull took an extended spring break, it is not the case with the whole boat. As the material mechanical properties have been estimated with normed tests, the manufacturing of complex assemblies of flax fiber infused with PMMA thermoplastic resin is now established. The optimized shape of the ladder is currently being processed and some great results over the quality and the performances of the vegetal laminates have been obtained. Work in progress: The fabrication of the final pieces of the climbing ladder are being manufactured and mastered with the help of industrial/academic partners. The team is confident in the schedule and those technical parts will be fully realized and adjusted by the end of April. Future goals: Next step for April and May will be to implement the new ladders with the modified hull, install the new rigging design and sail and adjust all the details in order to try it in May. Infusion des échelles en lin avec Martin & Quentin Infusion des échelles en lin avec Martin & Quentin Procédé d'infusion des échelles Procédé d'infusion des échelles Assemblage par collage avec Ronan Assemblage par collage avec Ronan Infusion des échelles en lin avec Martin & Quentin Infusion des échelles en lin avec Martin & Quentin 1/6 💻 EMBEDDED SYSTEM ​ Achievements: A database to archive the collected data has been set up with an associated REST API to facilitate access to the data for future analysis and use. Following that, work has been done on the demonstrator race display software to make it more than a demonstrator with no actual functionality. It is now able to read and display data for the rig tension sensors as numbers, graphs and even moving arrows on an image of the prototype. This has put in place the groundwork for all the other data and sensors to be displayed easily. The main onboard system’s data connection has been upgraded from a mostly inefficient and non-working LoRa connection to a cellphone one, directly connected to the internet. Work in progress: The addition of rig tension sensors to the system is in its final design phases and will be on our Moth by this summer since only some programming and a few adjustments remain. In parallel, work has started on designing a new GPS module that would be physically independent of the main onboard system and thus could be installed anywhere. Finally, the integration of all the currently available data and sensors to the race display software will be done by June, including a new wind meter that has been recently acquired. Future goals: It’s time to look towards Rafale 4 enhancement for its electronic system. Projects on the table concern redesigning, as a custom circuit board, the main onboard system. As well as implementing RTK GPS capabilities for greater accuracy and adding yet more sensors as deemed helpful. Some work to the race display software is also on the table. Système embarqué avec Christophe-André Système embarqué avec Christophe-André Système embarqué avec Christophe-André Système embarqué avec Christophe-André 1/1 📞 COMMUNICATION ​ Communication is a full-time and continuous occupation; a lot of parallel tasks have been done to ensure the standing of Rafale. February has been an exciting but busy month with a lot of meetings and events. March was therefore a month to take a step back and get feedback using our new visual identity and aligning to the competition wills. The key elements of our work are now the unveiling-birthday party of rafale, the formalizing of our sponsors for the SUMOTH 2023 edition and the planification of the competition.​ R3.5 poster with Julien R3.5 poster with Julien VID-20230401-WA0006_Moment Surprise vidéo with Louise Visual identity work with Julien Visual identity work with Julien R3.5 poster with Julien R3.5 poster with Julien 1/3 🧭 NAVIGATION ​ Achievements and work in progress: Since R3.5 design became fixed, the rigging team gathered to discuss, imagine, and prepare the 2023 setup. Navigation datasheets are also ready for the first tests in May. Future goals: The rigging phase will happen in the last stages of the manufacturing phase of our project. It will be a great occasion to ensure knowledge transmission between beginners and experts of rigging in the team and to train the team for boat setup during the SUMOTH 2023. Nouvelle voile usagée avec Christophe-André Nouvelle voile usagée avec Christophe-André Nouvelle voile usagée avec Christophe-André Nouvelle voile usagée avec Christophe-André 1/1 ♻ MATERIALS & LIFE CYCLE ASSESSMENT (LCA) ​ Achievements: As announced previously, mechanical tests on materials (composite flax fiber / Elium thermoplastic resin) have been completed to supply key data for designing. Concerning the LCA, bulkheads parts, rudder and daggerboard wet layup, bonding of the ladder inserts, and some repairs have been added and in MS360 (LCA tool for marine industry) considering the energy consumption and materials. Work in progress and future goals: Since manufacturing is currently in progress, the LCA team is waiting for data incomes from the workshop to complete its analysis. Meanwhile, the analysis is being rechecked, validated, and formatted for the report. ACV avec Axel ACV avec Axel Tests mécaniques avec Quentin Tests mécaniques avec Quentin ACV avec Axel ACV avec Axel 1/2

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MAY SUM-UP In May Rafale 3.5 took the plunge! One month left before the competition and, with the summer coming, the team is more than enthusiastic about the competition and finalizing the last details. 🏆 SuMOTH CHAL LENGE - FOILING WEEK - Where ? Malcesine, Garda Lake, Italy - When ? June 23rd to July 9th - To learn more: ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ 🖌 DE SIGN ​ Achievements and Work in progress: ​ The design of the hull of Rafale 4 and its internal structure is slowly but surely progressing. The stacking for the flax / Elium composite is being choosed. Also, the design of the mold has begun. To enhance the performances of Rafale 4, a review of the hydrofoil system is underway. The current system exhibits several issues, including excessive lift of the rudder wing in relation to the daggerboard wing. The first step towards optimization consists of a preliminary computation to determine the optimal geometric dimensions of the wings, such as surface area, spans, angles of attack, etc. . To validate this computation, simulations are currently being performed using STAR-CCM+ software. Future goals: Finishing the design of both the mold and the hull (in terms of internal structure) in order to be able to start the manufacturing by the beginning of the autumn. For the hydrofoil system, a design study will be done to identify the most suitable solution for the wing-shat connection and the flap-wing connection. Finally, additional simulations will be run to evaluate the hydrofoil system under critical conditions. analyse CFD de l’écoulement de l’air sur la coque de rafale 4 CFD Analysis Hydrofoil-StarCCM-2 Hydrofoil-StarCCM-2 Hydrofoil-StarCCM-1 Hydrofoil-StarCCM-2 analyse CFD de l’écoulement de l’air sur la coque de rafale 4 CFD Analysis 1/3 🛠 MANUFACTURING Achievements: The fitting of the new wings with the hull has been finished and our partner Voile SANSOUCY has built and delivered the new trampolines. The tests allowed us to notice some leaking problems around the wings on the hull. So, we brought back the boat to our workshop in order to fix it with some resin and silicon sealant. Finally, all the equipment has been packed and the boat shipped to the company wo manages its shipping to Italy. Work in progress: The boat left us for Italy the 1st of June. We take this opportunity to tidy up the workshop and get ready for Italy. Future goals: No big reparations needed during the competition. 1/3 💻 EMBEDDED SYSTEM ​ Achievements: The rig tension load sensors have been fully assembled and soldered, including the 3d printed casing. The design of a support piece for the wind meter has been done, the support itself will be manufactured in June. All of the embedded system except for the wind meter has been packed and shipped with the boat at the end of the month. Work in progress: The only work left for the electronics team is to finalize some software parts and to make sure the system works properly during the competition. Future goals: For the immediate future, all the focus is the competition. But some work has started to plan for next year’s projects. electronics_mai_01 electronics_mai_01 1/1 📞 COMMUNICATION ​ ​​ Achievements: The technical report has been submitted and will be soon available on our website! It took us long hours of writing in detail our design, methods, learnings, tests and work to share it for the competition but also to ensure a good knowledge transfer for R4. We also received our media supports for the competition (merch and banners) to be more visible and promote our project in Italy. Work in progress: The team is working hard on three main fields: Ensuring competition logistics: commodities, roles, teambuilding... Preparing competition communication: a good technical presentation, update our website and documents, prepare the team Keep searching for new sponsors to help us grow and improve. Future goals: Have fun in Italy! Find new sponsors, supports, share our passion and, in the end of the summer, expand the rafale family.😊 🧭 NAVIGATION ​ Achievements and Work in Progress: As the ambient temperature warms, we were able to carry out some nautical tests at the end of May, only a few days before the boat was due to leave for Italy. Unfortunately, the weather conditions were not constant. On the first day, even if the wind was just a little bit too light, the boat worked great, and except for a little crack that appeared on the wand, nothing broke. Despite the little wind, we were still able to validate that R3.5 is fully capable of taking off and flying by placing it on the shoulder of a zodiac. At the end of the first day, we also noticed that the hull was not completely waterproof, and therefore water was seeping into the hull. In anticipation of the 2nd day of testing, we repaired the cracked wand. For the second day, the wind was much better, but this time we had problems with the sail cams and the leakage problem wasn’t solved and was worse. In order to be ready to send everything to Italy the following week, we abandoned the third day of testing to be able to try to repair the boat as quickly as possible. We therefore managed to find a solution to the problems with the cams and with the watertightness of the boat, however we were unable to test everything due to a lack of time with the departure of the boat. Work in Progress and Future goals: Our next tasks will be to stick the logos of our various sponsors on the sail and the hull, and to test the repairs carried out before departure. Our first days in Italy will be crucial in order to check the state of our boat and its systems in order to validate that everything is working well. Our main goal for the following weeks will be to fly R3.5, have the best possible performance and more importantly, have fun. IMG-20230525-WA0010_edited IMG-20230525-WA0010_edited 1/1 1/5 ♻ MATERIALS & LIFE CYCLE ASSESSMEN T (LCA) 2022-2023 Summary ​ There has been a significant reduction in the use of materials compared with last year, although we have not redone the entire process. The notable improvement lies in the greater use of recycled and/or recyclable materials, contributing to a circular approach to the development of the boat. Most of the boat still comes from Canada, but there is an inversion between the USA and France for new parts, which has a negative impact on the overall LCA in terms of transport (although not calculated). As far as new materials are concerned, the boat production phase remains the main source of emissions, with a slight increase in energy consumption compared with the previous year. However, there is a slight improvement in non-fossil energy emissions (global warming), from -800 in 2022 to -600 in 2023. It's important to note that most of the calculations are based on this year's production. Unfortunately, the most problematic point concerns the transportation of the boat and crew by air, which generates a significant number of emissions. We therefore recommend that, where possible, we consider shipping the boat by sea for next year, even though this may be complex to implement. LCA - Origin of Materials by country of the boat --> boat fully Canadian ! LCA - Origin of Materials by country of the boat --> boat fully Canadian ! 1/1

2022-2023 February Sum-up (French only) March Sum-up April Sum-up May Sum-up

RAFALE ETS Innovative design. Sustainable design. Energy efficient manufacturing. Rafale, formerly known as Rafale Class-C, is a student club of the École de Technologie Supérieure. The team designs and manufactures nautical craft by putting forward technology and innovation, because there is never a limit to progress, even in a field that has existed for more than 10,000 years. Our ambition is to compete with experienced teams, in order to demonstrate the strong skills of our university. OUR PROJECTS RAFALE I 2013-2015 Discover RAFALE III Since 2019 Discover RAFALE II 2015-2018 Discover RAFALE IV 2023- Discover OUR PARTNERS To play, press and hold the enter key. To stop, release the enter key. NEWS See more

Récapitulatif du mois de février Début d'année intense pour Rafale ÉTS ! Des avancées concrètes en conception / fabrication mais aussi de beaux événements pour mettre en valeur le projet et les savoir-faire Canadiens [📷] Salon international du bateau de Montréal, 3 jours d'exposition de Rafale 3 et des technologies développées comme la fibre de lin ♻️ [📷] Portes ouvertes de l'École de technologie supérieure (ÉTS) , pour préparer l'avenir et mettre en valeur la compétitivité de l'école à travers de superbes associations étudiantes! [📷] Inauguration du bâtiments des clubs, avec en point d'orgue la présentation du projet au Ministre de l'Industrie Canadien 😎 [📷] Weekend de team building en chalet 🔥 [📷] NOUVEAU LOGO et nouvelle charte graphique pour Rafale ÉTS ! 🤩 Un gros travail effectué pour mettre en valeur cette aventure étudiante ambitieuse [📷] Des avancées majeures en conception et fabrication, entre nouvelles échelles, réparation des foils, conception d'un nouveau treillis... ça ne se tourne pas les pouces 💪🏽 La compétition en Italie pour le Foiling SuMoth Challenge et la Foiling Week™ se rapproche, toute l'équipe se donne à fond pour cet objectif!

Foil Week 2022 SuMoth Challenge The team is pleased to be able to present its participation in the SuMoth Challenge, an event associated with Foiling Week 2022. At the foot of Lake Garda, near Malcesine, the Rafale club had the opportunity to present the fruit of its work to international teams. Apart from competition, this event allowed the club to exchange with many personalities and to discover new practices in the field. The Canadians land 06/26/2022 After flawless organization and many hours of flying, the first team finally sets foot on Italian soil. Taking possession of the premises. The second team will arrive two days later. Discovery of the site 06/27/2022 Meeting with the organizers and first discussions with the teams present. Settlement of the last logistical details and open discussions with the participants, all competitions combined. The team also finishes settling in, but unfortunately learns that the boat is encountering some lengths with customs. Discoveries and discussions 06/27/2022 This day was an opportunity for the whole team to discover the boats of the other participants. It was also an opportunity to discuss with the other teams on more technical subjects concerning their production. First brief from the skippers. We learn that the boat will possibly be cleared the next day. Recovery and preparation of the boat 06/28/2022 A lot of road on the program: while the second part of the team landed in Venice, members already present set out to recover the boat in Milan. Reunion evening and home boat reception. Some of the team members had the honor of putting patience and cohesion to the test around a nocturnal activity: sail decoration. The boat is landing at the marina! 06/29/2022 Cash register opening and organization of the stand. On the program: assembly of the boat. The team was proud to find and unveil its prototype. First launch of the boat and start of the adjustments in the company of our skippers. Tests and repairs on the program! Official presentation and first race 06/30/2022 While part of the team spent the night on necessary repairs and adjustments, our Captain and the communications officer officially presented the Rafale 3 project to the jury and other teams present. Race canceled due to weather conditions, making final adjustments. Cohesion event organized by Rafale with the aim of contributing to the creation and maintenance of inter-team dynamism. Opportunity to interact with participating students and organizers. The boat flies, but no race 01/07/2022 Emotions on the program: the boat flies with its own wings for the first time! Smiles and tears of joy accompany the team, proud to see their project take off! Major breakage noted: broken foil. The team mobilized to quickly find a solution. Thanks to the help of WAZPS the parts were repaired within 24 hours. In fact, the boat could not participate in the event organized for the day. Inter-competition barbecue organized by Foiling Week. Relaunch and last race 02/07/2022 The foil is repaired and the team motivated. For the first time since the start of the competition, all the teams saw their prototypes set sail together in anticipation of the last race. A moving start for everyone! The Rafale 3 flew the colors of Canada for a speed test passed with flying colors. But the problems quickly caught up with the team: the foil, weakened, gave way a second time. Unveiling of the podium and award ceremony 03/07/2022 Closing day for the competition. Unveiling of the podium for professional sailors (Foiling week) and student projects (SuMoth challenge). Double podium for the Rafale team: 3rd place in the design category and 3rd place in the navigation category. Joy and happiness for ÉTS students, proud to have worn the school's colors in the competition. Repairs and departure for La Rochelle! 04/07/2022 & 05/07/2022 End of competition requires: after a celebration and a well-deserved night's rest, it's time to pack up. The boat is dismantled and put back in its crate. Critical repairs are also assumed by the team, in anticipation of the demonstration at the port of La Rochelle. Visits, restaurant and well-deserved relaxing evening before the departure of some members for Montreal and the others for La Rochelle. Visit of NEEL and INCIDENCE 07/07/2022 + 08/08/2022 Arrival of the team in La Rochelle. Taking possession of the accommodation and welcoming the boat. Installation of the boat on the marina and preparation of the equipment for the days to come. Rafale thanks INCIDENCE and NEEL for having opened the doors of their premises to the Rafale team. Knowledge sharing and benevolent support accompanied these opportunities. Sponsorship and outreach event 07/07/2022 The boss of Les Enfants du Rock, one of our partners in this adventure, opened the doors of Une Folle Époque to us, a Rochelais restaurant belonging to him. During this event, the Rafale team had the opportunity to present its work to many well-known personalities in their fields. XXXXXX honored us with their presence at the event. Demonstration at the port of La Rochelle 08/07/2022 Last assembly of the prototype for the last demonstration in the port of La Rochelle. Rafale thanks the city of La Rochelle for the opportunity and the visibility offered. Despite a low tide, the abteau took off between the well-known Deux Tours de La Rochelle. As tradition dictates, the boat experienced a final break under the strain, putting an end to navigation. Last moments and return to Montreal 07/09/2022 Storage of the prototype and drop off at the transport provider for return to Montreal. Last moments for the team who take the opportunity to visit the surroundings and celebrate the end of the trip. Final preparations made, the Rafale team has finally resumed its flight to Montreal. MERCI !

RAFALE II 2016-2018 Catamaran class C THE OBJECTIVE The Rafale II project was born in the continuity of Rafale I. The objective was to design and manufacture a second class-C catamaran, in the school of higher technology and to be more efficient than the first. It was therefore necessary correct the defects of Rafale I: rework the various elements of the boat to reduce the mass, improve buoyancy, the rigidity of the hydrofoils, and rebuilding the damaged rigid wing in order to obtain a much more efficient vessel. SHELL The volume of the Rafale I hulls had been deliberately limited in order to reduce their weight as much as possible. The boat being made to fly, its flotation had been put in the background. However, to take off, the boat needed to reach a speed of at least 10 knots. At low speed, the waterline being low, the crosspieces connecting the two hulls tended to hit the waves and consequently to slow down the ship : which is problematic in an acceleration phase necessary for take-off. ​ A second problem present in many catamarans: the lack of volume at the front of the hulls. The boat then had too much of a tendency to sink, that is to say nose dive and sink into the sea and turn around. Rafale II's main mission was therefore to respond to these problems related to the buoyancy of the hulls. Significant design work has been carried out: increase the volume of the shells in order to float higher and no longer get into the oven. ​ In addition, the structure of the boat lacked rigidity according to the skippers. There was particularly too much play between the transoms and the hulls. It is known that the rigidity of a boat goes hand in hand with its ability to relaunch and accelerate. Thus, Rafale II had to be more rigid than the first prototype in order to improve its performance. ​ To answer these problems, and, always with a view to reducing the total weight of the boat, the students worked on a new design and oriented on the use of prepreg aircraft-grade carbon fiber. Heating molds have been designed in order to be able to manufacture the hulls. Which was a real step forward in materials technology, because in comparison Rafale I had been made from dry carbon fiber infused with epoxy resin. The new structure has made it possible to reduce the mass of the shells by 10% while increasing the volume and the rigidity. FOILS Although efficient, the foils of the first prototype were too heavy. They have been manufactured with resin-infused dry fiber and foam reinforcements. The foils of Rafale II had been redesigned to improve their performance and above all reduce their weight. Thus, as with the shell, the pre-impregnated fiber has summer chosen linked to a reinforcement 3D printed: which allowed a significant reduction in mass and an improvement in overall rigidity. THE WING The Rafale I wing was very heavy. The mast of its structure had been made from a lamp post to reduce costs as much as possible, while having a conical shape specific to boat masts. The club therefore had the idea of designing a new wing, more efficient and above all lighter. However, the realization of this project never came to fruition. Thus, Rafale II is still sailing today with the Rafale I wing. The competitions Unfortunately, the competition which was the real raison d'être of Rafale II, La Little Cup, disappeared in a few months, despite having existed since the 1970s. Thus, the C-class catamaran Rafale II has never been able to shine in fleet races with similar boats. However, Rafale II was still able to shine in 2 events: -Miami Foiling Week (February 2018) ​ Present at the Foiling Miami Weekend 2018, Burst It surprised sailing enthusiasts and curious passers-by with its imposing size. The catamaran respects the few rules of class C: 25 feet long, 14 feet wide, and 300 square feet of sail. These dimensions make class-C the largest coastal cruising catamarans without a cabin. Each hull displays the surprising weight of 43 kilos. During the construction of the ship, the fifteen students of the Rafale ETS team sought to save weight, gram by gram, to meet audacious objectives. Innovative techniques have been developed in order to respect the mass limits, such as the insertion of a 3D printed honeycomb core between the layers of carbon. The catamaran, however, being the only multihull on the water at the Foiling Miami weekend. It is therefore impossible to compete with someone similar. In addition, the manufacture of the foils had not been completed in time. The team was nevertheless proud to unveil for the first time on the water a prototype that had taken one year to design and one year to manufacture. So before flying it we just sailed it. Speeds of 13 knots in breeze at 15 nds have been reached without hydrofoils. The team came back from this week of sailing with the boat broken at certain points, but happy with this experience. She had worked hard every night to make the boat operational for each new day. It took an average of 3 hours of repairs for 1 hour of navigation. The team then concentrated on making the ship more reliable with a view to winning future regattas. At the same time, the club contemplated to develop its support: the manufacture of a 25-foot catamaran with hydrofoils required significant resources, and few universities were ready to embark on such a project. To tell the truth, the ETS was the only one to provide the necessary budgetary and logistical means. -Montreal Open C-Class regatta (September 2018) ​ From September 6 to 9, 2018, regulars on the shores of Lake Saint-Louis probably noticed at this time two large vertical wings looming on the horizon. The founder of the shipyard Vanguard, Steve Clark, and the Rafale student club from the École de Technologie Supérieure clashed during a friendly regatta, the Open C-Class Regata, thanks to the investment of former members. ​ Both catamarans were cut out for racing: both equipped with hydrofoils and wings rigid for propulsion. The two catamarans pulled tight tacks while pursuing each other at 22 knots in a sustained wind at 12 knots. During one of the close-hauled legs, the Rafale team recorded a speed of 33 knots. This is the first time, after three years of construction, that Rafale II was flying. ​ All the same, the game was not easy for the students: the American ship Cogito distanced himself from Rafale II at the end of each round. Poor hydrofoil adjustment prevented the latter from stabilizing its flight altitude and accelerating to the expected speeds. The ship would rise about twenty centimeters above the water and then fall back, while its American counterpart skimmed the surface during continuous flight edges. After all, the important thing is to fly and slow down as little as possible. ​ The excessive speeds obtained weakened the pivot points of the rudders and the tearing of one of them. Throughout the night, the students were busy installing a new steering support. The ship was again ready to sail the next day. Despite a few lost rounds, the overall performance of the ship has demonstrated good maneuverability and flotation (such as resistance to being buried in the oven), all in a steady wind.