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The Vessel

The Yersin is a unique vessel, made for all seas and all weather. It is eco-friendly and combines a complex technical platform with a high level of comfort and safety.

Key figures:

  • Length: 250 ft
  • Width: 42 ft
  • Load displacement: 2198 tons
  • Maximum speed : 16 knots
  • Cruising speed : 11 knots
  • Autonomy without refueling : 15 000 nautical miles / 50 days
  • Autonomy without rejects: 10 days


The Yersin was built by the French shipyard Piriou who successfully combined a very high level of technicality with the elegance of an exceptional ship.

Classified “ICE 1C”, the Yersin offshore vessel can access areas covered by ice with its reinforced hull over its entire length. The Yersin has been designed for long-range transoceanic sailing in extreme conditions (-20 ° C, + 50 ° C), both on sea and on rivers and lakes, with a high degree of reliability in all conditions encountered.

Classified “Passenger ship”, the Yersin vessel offers comfort to 18 passengers, from the scientist to the guests.

It offers six laboratories and a science PC, a multipurpose room, a media room, a cinema room, an infirmary, a spa with jacuzzi, hammam and gym, a dive room …

The Owner

François Fiat, 68, was born in Marseille, France.
Former journalist (Europe 1) and then private secretary of a commercial developer, he joined the company of his father-in-law, founder of Franprix stores, and then founded and launched with him the brand Leader Price (1990).
These companies were sold in 2009 and François Fiat now manages the family holding company.
He is an accomplished sportsman who practiced squash and auto racing from 1976 to 2007.
François Fiat has been a member of the Yacht Club of Monaco since 2008 and the first ambassador of the Belle Classe Super Yachts since 2009 for an eco-responsible development of ships and practices at sea. Inspired by Tintin’s readings and maritime adventures (Albert Ier, Alain Gerbault, Moitessier, Cousteau), he developed the ASE project (Adventure, Science, Education) and has chosen to develop a versatile expedition vessel for all seas and weather types.
Being able to charter, for a multitude of customized missions, a vessel made for explorations, and expeditions, in all latitudes, the Yersin project was born.

The Yersin was built in Concarneau, Brittany by the shipyard Piriou, which specializes in ships designed to work far from their base. The Yersin was baptized in Monaco on 20 June 2015 in the presence of H. S. H. Prince Albert II.
After two test campaigns in 2015 and 2016, in hot and cold/ice zones, the Yersin is now fully operational with a crew of 22 people and equipment ready for extended expeditions.

Dr Yersin, the evidence

The name of the boat had to resonate with the project, a name that “sticks” to the words Adventure, Science, Education. The name of Yersin was imposed by himself. Dr. Alexandre Yersin (1863 – 1943) is little known from the public. Yet we owe much to him. He worked with the famous doctors Pasteur, Roux and Calmette. He was doctor of the maritime messengers and discovered Indochina where he will live fifty years. He founded the Pasteur Institute of Nha Trang and the Medical School of Hanoi (1902). His fame is due to his research on diphtheria toxin and his discovery of the plague bacillus (1894). He acclimates the rubber tree (one of the current greatest resources of Vietnam) and the Quinine tree. From 1902 to his death he devoted himself to the local populations of Vietnam. He also discovered the Dalat which became a climatic station.

To summarize, Dr. Alexandre Yersin was a great Adventurer, Scientist, Educator.