MS Isabelle X is a cruiseferry[5] owned and operated till July 2023 by the Estonian based Tallink and in January 2024 sold to Notamare Shipping.

[1] Prior to entering service Isabella visited Pori, Finland where the ship was displayed to the public on 3 July 1989.

[1] She had originally been planned to replace Rosella on the Naantali–Mariehamn–Kapellskär route, but the authorities of Kapellskär failed to modernise the port of the town to accommodate a ship of such large size.

[citation needed] As a result, when delivered the ship was placed on a new Naantali–Stockholm route for the northern hemisphere summer season, and 24-hour cruises from Helsinki for the rest of the year.

After the 1992 summer season SF Line decided to terminate the Naantali–Stockholm service and the Isabella was placed on the Helsinki cruise route all year round.

Viking Line had plans to refurbish all of the ship's cabins as a part of their large-scale fleet rebuilding programme.

[9] Since April 2022, the ship is acting as temporary accommodation for 1,500 refugees fleeing the Russian invasion of Ukraine.

[10][11] In January 2024 it was relocated to Canada to serve as a floatel for workers at the Woodfibre LNG project.