This further established their dominance over the other partners, although SF Line did take delivery of the new MS Turella and MS Rosella in 1979–80 and Slite MS Diana II in 1979.
Denne etablerede yderligere deres dominans over de øvrige partnere, selvom SF Line have fået leveringet nye færger MS Turella og MS Rosella i 1979-1980 og Slite MS Diana II i 1979.