Built in 1944 in Svendborg, in Denmark, by the navy architects Ring Anderson, for the maritime Company A.C. Sorenson. She first beared the name of "Nette S" and was later renamed "Peder Most". She was designed and fitted for the transportation of cattle between Copenhagen and Hamburg, a duty she carried out for ten years.

In 1955, she was given to an English organization, the "Outward Bound Trust", for the training of the students of English Public Schools as sailors. It was then refitted into a school ship and baptized on June 1965 "Prince Louis II". It is said that she was the boat Prince Charles did his navy training on. The Association Les Amis de Jeudi-Dimanche acquires the boat in May 1968. The schooner arrives at the Aber Wrach and is renamed "Bel Espoir II".