Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Talfahrt-de#Sense
Dalvaart-nl#Sense
Vaart stroomafwaarts-nl#Sense
Navigation à l'aval-fr#Sense
Navigazione a valle-it#Sense
Plaukimas pasroviui-lt#Sense
Downstream navigation-en#Sense
Nedstrømssejlads-da#Sense
Afvaart-nl#Sense