Between 2015 and 2020, the vessel operated as Baie de Seine for Brittany Ferries on a variety of different routes between Portsmouth, France, and Spain.

Initially christened MS Golfo Dei Delfini, the ferry was acquired by DFDS Seaways before entering service as Dana Sirena.

[4] On 22 June 2013, the ship collided with the dock at Parkeston Quay, which resulted in puncture holes in the hull below the water line.

DFDS Seaways closed the route to cut operating costs in order to make the company more competitive.

After the fitting of new gas filters, Sirena Seaways briefly entered service between Klaipėda and Karlshamn.

In 2017, Brittany Ferries announced that Baie de Seine would return to DFDS Seaways in 2020 and would be replaced by a new vessel ordered from China, to be named Galicia.