Meet our Crew

Holly Manvell 🇬🇧

Founder and Skipper

Like many, Holly's first taste of sailing was in the Optimist. Capsizing (repeatedly) in cold reservoir water however, wasn't something she relished, and so over the years switched to keelboat sailing.

Holly is a keen sailor with many nautical miles under her belt. Combining her passion for oceanography and geography, and love for sailing, she set up Clean Sailors to engage fellow sailors and water-lovers in safeguarding the future of their passion – the sea.  

Holly's interest in our world has seen her work with various international development organisations on climate, population, and air and water quality. Her core background is in business, from private-equity ownership to listed companies, and she's an Ocean Conservation Trust Advocate and Henri-Lloyd Pioneer.

Charlie Hayward 🇬🇧


Charlie took up sailing relatively late compared to most. Starting off with Wayfarers as a teenager he then transitioned heavily to keelboat sailing and racing. He's sailed much of the UK's south coast waters alongside regular trips to the western Irish coast and Europe.

Lately, he's competed in some of the classic yacht racing events including Round the Island and St. Malo and back in 2015, successfully completed a 51-day, east-west crossing of the Atlantic Ocean in a rowing boat. It was during this voyage in particular that Charlie frequently saw man-made debris in the vastness of the world's second-largest ocean and vowed to help reduce the impact we have on our seas. Charlie works in impact investing and joined our team aligning his two passions - sailing and cleaning up our seas, with ours.

Lukas Hesse 🇩🇪


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 currently training for the 69F Youth Foiling Gold Cup and the WASZP Worlds. 

Libby Allen 🇬🇧


Libby is scientist, specialising in microplastics. She helps us understand and communicate the impact we humans are having on our oceans; plastics in particular. She's a Master in Oceanography and is currently studying for her PhD, having done various studies on microplastics including nurdles and microfibres.

By 13 years old, Libby was competing in sailing across the UK and became the youngest person ever to win a National Championship race in the double-handed Enterprise dinghy class. Her favourite memory on the water is racing under the Sydney Harbour bridge.

Libby is also a sailing and SUP instructor, and loves inspiring her students to not only get out on the water, but to protect it, also.

Mo Funani 🇿🇦


Mo hails from the beautiful ocean-side city of Cape Town, South Africa. He’s a keen sailor and co-founder and director of Offshore Yacht Services. 

Mo is an L26 Class Association of South Africa committee member responsible for growing and promoting sailing within the Western Cape. He’s really interested in how science and technology is used to develop handicap systems in racing, and he’s on the path to become a recognised Offshore Racing Congress (ORC) measurer. 

Mo’s passion is in ocean health and helping to inspire others in cleaning up our seas. 

Sandra Marichal 🇫🇷


Sandra has sailed over 30,000nm on the Clipper Yacht Race 2019/20 on UNICEF UK and authored 'The Round the World Wanderer' - a children's book inspired by her adventures. She is very passionate about environmental protection and impact investing. 

Sandra founded #Up2degrees, a movement that successfully lobbied the Singaporean government to reduce the impact of aircon. As a UN Women Ambassador, she has been on expeditions to Antarctica and raised thousands of dollars to support women in rural communities who are the first victims of climate change. 

Her core interest is in upcycling and recycling, and how we can reduce the impact our sailing industry has on our oceans and wider environment