ONE PLANET Yacht Charter Catamaran

Name: Alexandre Le Grégam
Position: Captain (Rotational)
Nationality: French
Languages: French, English

Alexandre brings over 20 years of maritime excellence to One Planet, holding a Captain 500 GT license and a 750 KW Engineering certificate.
His career spans from high-performance racing yacht construction to commanding luxury catamarans and large sailing vessels up to 140ft.

Following a first rotation in Winter 23/24 on board One Planet , he possesses an intimate knowledge of the vessel’s eco-friendly systems and performance.

As a former sailing instructor, Alexandre finds great pleasure in sharing his skills. Whether you wish to learn the nuances of navigation or explore the water toys aboard the One Planet catamaran, he is an enthusiastic guide.

He is a fluent English and French speaker with intermediate Spanish, ensuring clear communication and a personalized service for an international clientele. His goal is to blend safety, technical perfection, and a warm, educational atmosphere to exceed the expectations of every guest on board. Having spent numerous seasons in the Mediterranean, the Pacific, and the Caribbean, Alexandre uses his global expertise to curate the most pleasant and seamless charter experience for you and your guests.


Name: Guillaume Sergi-Gobert
Position: Captain (Rotational)
Nationality: French
Languages: English, French

Born in southern France near the Mediterranean, Guillaume’s passion for the sea began at an early age. After earning his sailing instructor diploma, he spent his university holidays teaching sailing before starting a career in software development. But soon, the call of the sea grew stronger, and a transatlantic crossing convinced him to turn his passion into a profession.

Now a professional captain for over 20 years, Guillaume has logged more than 100,000 nautical miles across the Mediterranean, Atlantic, and Caribbean — including three Atlantic crossings and two passages through the Panama Canal.

Calm, precise, and deeply experienced, he has commanded a variety of luxury sailing yachts and catamarans. Guillaume is known for his reassuring composure in all situations, his focus on safety, and his dedication to delivering exceptional guest experiences. Passionate not only about sailing but also about the world beneath the waves, he is an excellent swimmer and diver who never misses an opportunity to visit his “underwater friends.”

With his extensive knowledge of both the Mediterranean and the Caribbean, Guillaume takes pride in creating unforgettable voyages where guests feel safe, inspired, and connected to the sea.

Name: Tim Vincent
Position: Chef
Nationality: French
Languages: French, English

Tim is a talented young French chef with experience across luxury yachts, private chalets, and Michelin-starred restaurants. Passionate and versatile, he brings strong skills in international cuisine, with a particular expertise in French gastronomy, pastry, and artisanal bread.

He has worked on board several yachts, including M/Y Kristo and charter vessels in the Mediterranean and Bahamas, where he managed provisioning, budgets, and high-end guest dining.

Dynamic and detail-oriented, Tim is dedicated to delivering refined, creative cuisine and an exceptional onboard dining experience.

Name: Pierre Friant
Position: Deckhand
Nationality: French
Languages: French, English

Pierre is an experienced French captain and first mate with a strong background in both private and charter yachts since 2015. Originally trained as a marine carpenter, he combines solid technical knowledge with a true passion for sailing and watersports.

He has extensive experience on a wide range of vessels, including catamarans, monohulls, and motor yachts, and has recently worked as Second on board a Sunreef 80 Eco, cruising the Mediterranean.

Professional, adaptable, and guest-focused, Pierre is dedicated to delivering safe, smooth, and memorable experiences on board.


Name: Szonja Horvath
Position: Stewardess
Nationality: Hungarian
Languages: Hungarian, English

Szonja Horvath’s journey began in Hungary and then embraced the opportunity to study in Asia at a young age. This experience ignited her open-mindedness and deep interest in diverse cultures.

Fluent in Hungarian, English, Chinese, and currently learning French, Szonja’s linguistic abilities reflect her global perspective. With a background in hospitality and childcare across the globe, she discovered a passion for sailing three years ago. Her 13-year career as a professional synchronized swimmer instilled in her discipline, punctuality, and a strive for perfection. An outdoor enthusiast, Szonja is also a qualified diver, proficient surfer, and a yoga instructor, blending her love for the sea with her dedication to wellness and sports.