The collections are organised into thematic sections divided between the third and mezzanine floors.
The starting point is the nineteenth-century city and its port, both detailed in a large diorama. Various videos introduce the great themes of marine economy, work, the evolution of boats, engineering and design, and sea travel on an ocean liner, on a sailing boat or a fishing dinghy. Voyages take different forms depending on whether they are for commerce, work, exploration, tourism or enforced emigration.