Because Viking Line was only a marketing company, each owner company retained their individual fleets and could choose on which routes to set their ships (naturally there was also co-ordination on schedules and such).
Fordi Viking Line kun var et handelsfirma ejede hvert selskabet stadig deres individuelle flåde og kunne vælge hvilke ruter de ville bruge deres skibe på (naturligvis var der også koordinering af tidsplaner og sådan).