Registration of VesselsAll vessels using the Shannon Navigation, which includes the Shannon-Erne Waterways and the Erne System must be registered with Waterways Ireland. Masters of vessels must use the mooring fingers for mooring of vessels and for embarkation / disembarkation from vessels. SlipwaysSlipways should only be used for the purpose of launching and recovering of water craft or other objects from the water. Caution to be Used in Reliance upon Aids to NavigationThe aids to navigation depicted on the navigation guides comprise a system of fixed and floating aids to navigation. Prudent mariners will not rely solely on any single aid to navigation, particularly a floating aid to navigation.