Seabourn, the luxury segment unit in the Carnival Corporation & plc group, said it has opened for sale the maiden season itineraries for Seabourn Ovation, the newest addition to the world's finest ultra-luxury cruise line. Scheduled to join the Seabourn fleet in spring 2018, the ship will sail on a variety of voyages in and around Europe between May and November 2018, hailing at ports throughout Northern Europe, the United Kingdom and Mediterranean.