Customers can sail on the 56-stateroom twin yachts SeaDream I and SeaDream II, which have undergone a $10 million refurbishment. The offer is available on a range of voyages, from five to thirteen days in duration. 

Andreas Brynestad of SeaDream said: “Because anniversaries are a time in a relationship to reflect on shared memories and celebrate the beauty and intimacy that keeps us returning for more, what better time to offer once-in-a-lifetime savings on our special collection of once-in-a-lifetime luxury yachting journeys?”

In the Caribbean, sailings offering the discount will include Anguilla’s Sandy Ground; an overnight stay in the “jetsetter’s yachting playground of St. Barths”; a visit to the island of Mayreau, just east of the Tobago Cays; and the small archipelago of Iles des Saintes islands off the southern coast of Guadeloupe. 

In the Mediterranean, guests can sail along the French and Italian Rivieras, with itineraries including Saint Tropez, Portofino, Amafli and Ibiza.