 Cherbourg was the first French marina by number of visitors in 2007, having 10,117 boats for 28,713 overnight stays in 2007, and the total impact estimated at €4 million for the Cherbourg agglomeration.A tradition of local industry, shipbuilding is based on the two pillars of the DCNS Cherbourg for submarines and Constructions Mécaniques de Normandie (CMN), famous for their speedboats.This sector has been widely restructured over the past twenty years.