(2:55 p.m. GMT) -- Royal Caribbean has revealed details of its European 2021 season, with seven ships based in the region -- including Anthem of the Seas in Southampton -- and 70 percent new itineraries, plus new ports of call.

Royal Caribbean's family-friendly ships Anthem of the Seas and Harmony of the Seas will return to homeport in Southampton and Barcelona, respectively, while the brand new Odyssey of the Seas -- Royal Caribbean's second Quantum Ultra class vessel -- will sail through Turkey and Greece.

Marking new cruises from Southampton, Anthem of the Seas will be the first Quantum-class ship to visit ports in Norway, including Stavanger, Kristiansand and Geiranger. Other new ports of call for Anthem include Copenhagen and Aarhus in Denmark, and Bordeaux in France. Selected sailings will include extended late-night stays in Paris and overnights in Rotterdam in the Netherlands and Lisbon, Portugal.

Harmony of the Seas will sail on seven-night cruises through the Western Mediterranean from Barcelona, and round-trip sailings from Rome will also be available.

In the rest of the European-based fleet, Vision of the Seas will continue to offer 12-night Mediterranean itineraries from Barcelona sailing to the Greek Isles and making stops in Kotor, Montenegro; Nice, France; Rome, Florence/Pisa, Italy and include an overnight in Venice and late nights in Split, Croatia. Jewel of the Seas will end the summer homeported in Barcelona with itineraries taking in the Iberian Peninsula and Greek Isles including stops in Cannes, France; Athens and Santorini, Greece.

Rhapsody of the Seas will spend another summer season in Venice offering seven-night sailings alternating between Greece/Croatia and the Greek Isles. Select sailings will offer late nights in Kotor, Montenegro. Selected cruises on Jewel of the Seas, from the ship's homeport of Amsterdam will take in the British Isles and Baltics, including overnights in Edinburgh, docking at South Queensferry, and St Petersburg, Russia, as well as late-nights in Liverpool -- the first time a Radiance-class ship will call at the city -- and Bordeaux, France.

Completing the 2021 line up, Adventure of the Seas will offer 7- to 11-night sailings including overnights in St Petersburg, from Stockholm, Sweden, and will also sail to Helsinki, Finland; Tallinn, Estonia and Visby, Sweden.

All itineraries are available to book from today, with the exception of sailings for Odyssey of the Seas and Adventure of the Seas which will be available from December 9, 2019.