Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/4821001
Is Reference of Getijdenafhankelijk varen-nl#Sense
Tecnica del doppio flusso di marea-it#Sense
Tideabhängige Stromabwärtsfahrt-de#Sense
Tide-dependent navigation-en#Sense
Nedstrømssejlads foretaget i to højvandsperioder-da#Sense
Technique de descente en bi-marée-fr#Sense