One of the great biannual migrations is about to begin as cruise ships move from their winter homes in the Caribbean to Europe for the summer.
These transatlantic repositioning voyages are a rite of spring. The reverse occurs in the fall, when vessels flock back to Caribbean waters.
It can be tough for lines to sell these longer, shoulder-season voyages.
"A lot of people don't want to do it because they don't have the time — 10 or 12 days, of which nine may be at sea," said Peter Carideo of CRC Travel, a luxury specialist in Chicago.
But for cruise fans with time on their hands, they're an opportunity to sail with big savings.
Most repositionings are in March, April and November. Seasoned travelers such as Jennifer Anderson of Chicago find allure beyond the savings, saying the ship becomes the destination — like an all-inclusive resort.
In November, Anderson and her husband crossed from Lisbon, Portugal, to the Caribbean. Their Seabourn ship called at the Portuguese island of Madeira, then spent nine days at sea before arriving at Barbados. Other transatlantics they took were similar, sometimes visiting the Canary Islands or ending in Florida.
Anderson said she swims and tans, and "I read 20 books."