Vartiovene 55 is a former Finnish Navy R-class patrol boat bought into private ownership and converted into a commercial cruise ship.

[1] Originally named Röyttä, the ship was built as a minesweeper in the Turku harbour on 2 July 1959.

Röyttä and its sister ships, Ruissalo, Raisio, Rihtniemi and Rymättylä, were originally designed to serve as coastal minesweepers, based at Pansio.

In June 1969, a new patrol fleet was founded and Röyttä and Raisio moved to Upinniemi.

Since then, Rihtniemi and Rymättylä were transferred to the Estonian Navy, Ruissalo was scrapped and Raisio was sold completely stripped of its armament and equipment.