Crystal River Cruises’ Mozart vessel is to leave the fleet and join sister company Genting Cruise Lines at the end of the year.

Mozart, which is Crystal’s largest river ship, joined the fleet in 2016, having previously sailed as River Mozart for Peter Deilmann Cruises.

The average age of Crystal River Cruises’ remaining ships – Crystal Bach, Crystal Debussy, Crystal Mahler and Crystal Ravel – will be under two years old having launched in 2017 and 2018.

Crystal guests booked on previously scheduled Crystal Mozart 2020 sailings will be accommodated on similar Danube itineraries offered by Crystal Mahler or Crystal Ravel.

Tom Wolber, Crystal’s president and chief executive, said: “While the new ships’ itineraries vary, our guests and travel advisors will now find a uniform ship experience across the full fleet.”