Sitmar Cruises was formed in 1980, apparently succeeding Società Italiana Trasporti Marittimi. Princess Cruises bought it from the Vlasov Group in July 1988, after which it became the name company P&O Cruises Liberia. Fairstar, established in the Australian market, retained her name and was operated through a separate Sydney office.
Keep the explicit scope label independent; no alias or company identity is inferred.