Seabourn is to embark on its first ‘Pole to Pole’ voyage from the Arctic to Antarctica.
The 94-day sailing is among itineraries released for 2027-28.
A new 11-day Baltic cruise covering Denmark, Sweden, Estonia, Lithuania, Poland and Latvia has also gone on sale together with a 14-day solar eclipse sailing for August 2027.
The luxury line’s expedition ships, Seabourn Pursuit and Seabourn Venture, will cover 189 destinations across 39 countries on 28 itineraries ranging from eight to 94 days between March 2027 and April 2028.
Seabourn Venture will run two 18-day Northwest Passage voyages between August and September 2027.
Other itineraries detailed by the company include the Kimberley region of Australia, South Pacific, Japan, Alaska, the Mediterranean, northern Europe and Canada and New England.
Seabourn president Mark Tams said: "Whether guests are drawn to the thrill of expedition travel or the allure of exploring hidden destinations, our 2027–2028 season offers life-expanding voyages for every kind of traveller.
"With the intimate, yacht-like atmosphere of our ships, the genuine warmth and attentiveness of our onboard team, enriching onboard programming, and immersive shore excursions, we invite guests to explore the world’s most extraordinary destinations, all with Seabourn’s signature style of luxury at sea."
Expeditions general manager Robin West added: "In the short time since we launched, Seabourn Pursuit and Seabourn Venture have reshaped expedition travel with itineraries that explore remote and remarkable destinations.
"Expedition travel is about so much more than just sightseeing. With our expert expedition teams leading every exploration, our guests are gifted new perspectives on the natural wonders of the world and the people and the diverse cultures that make these places so special."
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