Professional river boat rental companies benefit from a label which allows them to issue a pleasure boating card to their customers for the duration of their rental after a short period of learning to operate the boat and assimilate the rules of navigation. Before boarding, an instructor quickly trains them in the main maneuvers (mooring, passing through locks, etc.) and presents them with the navigation code on the canals as well as the visual signage... all very useful information for budding captains !