This exchange of 12 days, including 7 in the open sea , with 5 habitable sailing boat will gather 42 teenagers aged 13 to 17 and 3 youngers aged 18 to 25 years from 5 nations (France , Russia, Armenia , Czech Republic and Italy). These young with different culture and with very different knowledge about the marine environment and navigation competences will be supervised by a team of five professi...