Instance of: http://www.w3.org/2004/02/skos/core#Concept
Subject Field unknown
Is Reference of Αποδοτική ταχύτητα-el#Sense
Velocità di crociera-it#Sense
Velocidad de crucero-es#Sense
Reisegeschwindigkeit-de#Sense
Vitesse de croisière-fr#Sense
Kruissnelheid-nl#Sense
Cruising speed-en#Sense
Rejsehastighed-da#Sense