M/S Rosella is a ferry operated by Viking Line on the Mariehamn (Åland) - Kapellskär (Stockholm) route, with multiple departures per day. M/S Rosella is one of Viking Line's smaller ships, but altogether a large ship, accommodating over 1500 passengers and 300 vehicles. With a trip duration of 2.5 hours, the journey is short for a ship of this size.