Windstar requires passengers to be fully vaccinated and had tried to ensure its crew would be, too, but only a handful are.
The scheduled destinations were Anguilla, Virgin Gorda, Jost Van Dyke, Tortola, Norman Island and St. Barthélemy.
Crew to get shots in Puerto Rico
A Windstar spokeswoman said there are 177 crew on Star Breeze, a handful of them vaccinated. She said the ship would be going to San Juan, Puerto Rico, on June 28 to get the rest of the crew the Johnson & Johnson vaccine.
The spokeswoman did not say how many travelers opted to go ahead with the current cruise — which Windstar offered them free of charge — but a news report said there are 55 passengers on board. Following its lengthening, Star Breeze has capacity for 312 passengers.