A search undertaken after an overturned kayak was discovered near Chebeague Island about 10 p.m. Saturday was called off Sunday afternoon. The owner of the kayak came forward, said Coast Guard Chief Petty Officer Kevin Hampton.

The search was one of three conducted by the Coast Guard after unmanned boats were discovered in foggy Casco Bay.

The kayak search included a Coast Guard helicopter, a Coast Guard small boat, the Portland harbor master and Maine Marine Patrol.

On Saturday night, the Coast Guard searched for two men reportedly lost in the fog off Little John Island. The Coast Guard later learned via Facebook that the men had been rescued by a woman boater who led them to safety, said Chris Berry, search and rescue coordinator for the Coast Guard.

On Sunday morning the Coast Guard was also looking into a sailboat adrift near Peaks Island and an 8-foot inflatable skiff near Fish Point, Berry said.

“Things go adrift so we have to spend a lot of time” making sure no was hurt, said Berry.

The Coast Guard urged owners of personal watercraft to label them with contact information to avoid triggering costly and time-consuming searches.