Kara and Joe Youssef sold their two apartments, withdrew their life savings, gave up most of their belongings and, in late October, set out for Istanbul for the trip of a lifetime: a three-year cruise around the world, scheduled to depart Nov. 1.

But in late November, after months of behind-the-scenes chaos, the Youssefs were stuck in Istanbul, with the cruise company canceling the trip. It did not have a ship that could handle the journey.

The Turkish company, Miray Cruises, had announced the cruise, called Life at Sea, in March. It claimed it would be the longest cruise ever — 382 port calls over 1,095 days — and a community at sea, with opportunities to explore the globe. Starlink internet and a business center would allow passengers to work remotely.

The cruise seemed ideal for a post-pandemic era, targeting people longing for an escape. With fares starting at $90,000 for an inside cabin and going up to $975,000 for a suite, the trip even seemed like a bargain to some prospective passengers, cheaper than living three years in many cities.