Ålandsfärjan became SF Line A/B and subsequently Viking Line ABP. In autumn 1966 Ålandsfärjan, Rederi A/B Slite and Solstad formed marketing company Vikinglinjen AB OY, later Viking Line Marketing AB OY, adopting Slite’s red colour scheme of 1965. Sally left the consortium in 1988 and Slite in 1993; the marketing business then became wholly owned by SF Line and Viking Line ABP became the group parent. In 1988 Finska Angfartygs A/B and Axel Axelson Johnson exchanged their interests for full control of Sally. Lloyd’s separately dates Viking Line A/B, Vikinglinja O/Y, to 1991 and SF Line’s renaming to 1995; Rosanoski notes disagreement with the website account.
Keep the explicit scope label independent; no alias or company identity is inferred.