Our Crew & Ambassadors
Holly Manvell 🇬🇧
Founder & Skipper
Like many of us, Holly's first taste of sailing was in an Optimist. Capsizing (repeatedly) in a cold reservoir wasn't quite her thing, so she moved on to inshore and offshore sailing on bigger boats, and eventually into bluewater cruising, now with many nautical miles under her belt.
With a love of oceanography and geography to match her love of sailing, Holly set up Clean Sailors in 2020 to bring sailors and water-lovers together to protect the thing we all share a passion for: the sea.
Away from the water, Holly has worked with international development organisations including the United Nations Association on climate, population, and air and water quality, alongside a business career spanning private equity and listed companies. She's also been appointed an Ocean Conservation Trust Advocate and a Henri-Lloyd Pioneer.
Alfie Tollit 🇬🇧
Ambassador
Alfie is a driven young sailor who began his journey at just 8 years old, sailing his grandad’s Wayfarer in Chichester Harbour. He later found his passion for racing in the Topper class, quickly progressing through local events to national and international competition.
After earning a place in the ITCA 4.2 National Squad, Alfie secured a top-10 finish at his first national event in Weymouth and went on to place 13th at the Topper World Championships in Medemblik. Now training in the 5.3 rig, he continues to push his performance.
Alongside racing, Alfie is passionate about tackling water pollution. Having taken part in protests with Surfers Against Sewage, he is motivated by the need for greater accountability and stronger action against polluters, using his voice to push for real change in protecting our waters.
Willemijn Offerman 🇳🇱
Ambassador - European Champion 2024, Youth America's Cup, LA 2028 Olympics
Willemijn was almost born on a boat. As a baby, she joined her parents and older brother on their boat, where her father created a special seat so she could watch just over the edge and see the waves pass by. The stronger the wind, the steeper the waves, the bigger the smile on her face.
By age four, Willemijn joined her brother in the Optimist. At the age of six, she began competitive sailing, first at her local club in Vinkeveen and later on a national level. She always dreamed of sailing with her brother again. When he outgrew the Optimist, they transitioned to the RS Feva, where they sailed their first international competition together.
Next, they moved on to the 29er, where they were guided by former Olympian Alex Breuseker. Alex helped transform her into a top athlete and sparked her Olympic ambitions. The team then
transitioned to the 49erFX. In the first year, they excelled so much that she was invited to train full-time with the Watersportverbond, she seized this opportunity.
Currently, Willemijn is sailing the foiling Nacra17 with Scipio Houtman and she is also one of the helms of the JAJO Team Dutchsail America’s Cup Women’s team, as well as an Optimist coach for young sailors.
Daniel Cullen 🇬🇧
Ambassador
Daniel is a UK sailor who has been sailing most of his life. Having started his sailing journey on an AB, a small dinghy used mostly in Poole harbour, he then moved onto the Topper. Daniel competed in 3 world championships in his Topper before moving on to sail in the Waszp. His first taste of speed along with the foil, meant he was instantly addicted.
Daniel spends most weekends out on the water whether that’s onboard, sailing his WASZP or windsurfing and surfing. His love of the water has been life long and is passionate about sharing the joy the water brings and how we must protect our oceans through responsible sailing.
Daniel is currently training for a busy season in the WASZP and will be heading out to Lake Garda in June for Foiling Week.
His ambition is to work for SailGP one day.
Poppy Luxton 🇬🇧
Ambassador - British Youth Sailor of the Year 2025
Poppy is an ILCA 6 sailor based in Falmouth, where she began her sailing journey in Mirrors at Restronguet Sailing Club. Named British Youth Sailor of the Year, she has achieved top results at the RYA Youth National Championships, including 1st and 3rd place finishes, and competed internationally at the ILCA U21 World Championships.
Growing up in Cornwall, Poppy has seen firsthand the effects of water pollution on the places she sails. Inspired by organisations like Surfers Against Sewage, she is passionate about turning awareness into action—helping make sustainable choices easier and more accessible within sailing, from equipment reuse to simple changes at club level.
Scipio Houtman 🇳🇱
Ambassador - European Champion 2024, LA 2028 Olympics
Scipio is a Dutch professional sailor who has been sailing his entire life. From being onboard with his parents as a baby, Scipio began taking the helm himself in an Optimist, when he was 7 years old.
Since then, he’s sailed and competed globally in a whole variety of boats including the Laser4.7, Laser radial, 49er FX, 49er, Nacra17, 69F, and he’s now back in the Nacra17 working on his Olympic campaign.
He holds the 69F speed record at 34.9 knots (wowsers!) with his team having also won first place in the Youth Foiling Gold Cup 2021.
Scipio loves speed and high-adrenaline racing, powered by nature, and his passion for the health of our waters sees him using his platform as a professional athlete to help change the way we use and look after our seas.
Finnigan Murray 🇬🇧
Ambassador
Finn is a passionate young freeride windsurfer and proud member of Team 15 - the RYA's youth windsurfing programme, who discovered his love for the sport after getting his first kit in 2025. Growing up by the water, he’s always been around boats and sailing, but windsurfing quickly became his true passion.
Now focused on progressing into freestyle, Finn is working towards competing in his first competitions in 2027. When he’s not on the water, he enjoys connecting with others and sharing his journey through his growing Instagram community. Looking ahead, he hopes to pursue a career as a Merchant Navy officer and one day live by the coast in Poole, combining life at sea with his love for windsurfing.
Dylan Cullen 🇬🇧
Ambassador
Dylan is a UK sailor who has sailed since he was 2 years old in an AB – a small fleet based in Poole Harbour. Dylan is crazy about the ocean and has spent his entire childhood on the water. Dylan competed in 3 Topper world championships and is now concentrating on competing nationally and internationally in the wingfoil. A self-confessed adrenaline junkie, Dylan describes the feeling of gliding on the water as “unmatched” by anything he has experienced previously. Dylan is a competent windsurfer and surfer and is currently sponsored by Gaastra. He uses his social media to spread the stoke and promote the benefits of the sea, particularly on the mind.
He regularly talks about clean sailing and the importance of keeping our oceans clean and accessible to everyone.
Dylan is gearing up for an intense season of competitions which include Defi Wing, Youth World Championships and Foiling Week.
Lukas Hesse 🇩🇪
Ambassador - German Champion 2020 & Youth America's Cup, Team SailGP
Lukas is a professional sailor and German Champion 2020. As well as training for Olympic campaigns and more recently training in the WASZP and 69F dinghies, Lukas has a passionate interest in protecting our oceans.
Lukas started sailing Optimists at the age of six, on the beautiful Lake Chiemsee in Bavaria, Germany and has been hooked ever since.
As an Opti sailor, Lukas achieved 7th at the Worlds in 2013 and was awarded Second Best Nation. He then graduated to 29er boats, taking part in the World Sailing Youth Worlds in New Zealand. In 2017 he started a 4-year campaign for the Olympic Games in the 49er.
Lukas is has competed in the WASZP Worlds and took Silver in the 69F Youth Foiling Gold Cup 2023 as part of the Clean Sailors Youth Racing Team.
Amelie Ballantyne 🇬🇧
Ambassador
Amelie began sailing on an Optimist in Lac De Lion in France and then moved into the Topper class, where she achieved 1st female Topper sailor in the Southwest ITCA Series. Her talent and commitment to sailing earned her a place in the RYA Regional Training Group (RTG) on her Topper where she continues to refine her skills alongside some of the best sailors and coaches both nationally and regionally. Amelie has also sailed the RS Feva and RS200 and in the Laser/ILCA class. She has also spent time with the Magenta Foiling Team on a WASZP. Amelie writes for a national sailing newspaper All At Sea.
Beyond competition, Amelie is very enthusiastic about encouraging girls to get into sailing, striving to break down barriers and inspire the next generation. As a strong advocate of environmental conservation, Amelie also recognises the crucial role sailors play in preserving the oceans and rivers and is deeply committed to promoting sustainability within the sport.
Jann Schüpbach 🇨🇭
Ambassador - Professional sailor, Tudor Team Alinghi
From a very young age, Jann was sailing a small family boat in the Swiss Alps. He soon took over the helm and began sailing competitively in the Optimist class.
After a successful time in the Opti and several national and international podiums, Jann continued his sailing path in the 420 Dinghy, as Crew.
Jann has competed in both WASZP European and World Championships, and took Silver in the 69F Youth Foiling Gold Cup 2023 as part of the Clean Sailors Youth Racing Team.
He was Skipper of Alinghi Red Bull's Youth Team for the 37th America's Cup in Barcelona, 2024, and is now part of Tudor Team Alinghi, readying for the 38th America's Cup in Naples, 2027.
Alex Van Doren 🇺🇸
Ambassador
As a young sailor, Alex has been immersed in the world of competitive sailing since 2021. He began in the Toppers, where his commitment materialised well, with his result of 44th in the 2022 Worlds earning him a coveted spot in the British Topper National Squad. His work in Toppers eventually culminated in a 20th-place finish at the highly competitive 2023 Topper World Championships held in Ireland.Alex is an active member of Oxford Sailing Club, and he’s incredibly thankful for the support he’s received from the sailing community, notably through successful crowdfunding efforts that aided his transition to the ILCA class, further supported by the club. With his sights set on international events, Alex has proudly represented both Great Britain at the 2023 ILCA 6 Youth Europeans and the United States in the 2024 edition.
Looking ahead, Alex's focus is firmly set on representing the USA, with a potential move across the Atlantic on the horizon. He’s currently training diligently with the goal of achieving strong results at the upcoming US Youth Championships and he’s excited to promote lower financial barriers alongside sustainability in sailing.
Hannah Stodel PLY 🇬🇧
Ambassador - World Champion & Paralympian
Hannah is a three-time World Champion and four-time Paralympian sailor. She grew up in the East of the UK and learned how to race from her parents, both fierce competitors: Mum narrowly missed out on selection to the 1988 Olympic Games in Korea while Dad was a strong player on the Hornet and 505 circuits.
By 13 years old Hannah had attracted real attention. Dame Ellen MacArthur took Hannah racing aboard the trimaran “Foncia Kingfisher” during the Round the Island Race in 1999 and at 15 the call from Andy Cassell, the Atlanta 1996 PARALYMPIC Gold medalist in the Sonar class, came, inviting her to go and train with him.
She held the mixed World Championship title in the 29er class. Selection for the Sonar Development Squad and work with some of Britain’s finest sailors, coaches and support staff saw her win multiple World, European and National Championships over several sailing classes.