The band have already confirmed a run of US dates in April and May in support of their eighth studio album, expected early next year. Further show announcements are to follow, and the band have suggested more cruises will be included.

Nightwish promise an "amazing experience," adding: "Have you ever even dreamt of spending 24 hours with Nightwish? Come and breathe the sea air." Frontwoman Floor Jansen has shot an introductory video.