Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field Subject Field/5211003
Is Reference of Internationale standarder for skibes sikkerhed-da#Sense
Normes internationales relatives à la sécurité maritime-fr#Sense
Internationella normer för säkerhet på fartyg-sv#Sense
International standards for ship safety-en#Sense