Published: Aug 08, 2014 12:56 PM EDT

KEY LARGO, Fla. (AP) - The U.S. Coast Guard says it has suspended the search for a boater missing off Key Largo.
    
Authorities say 24-year-old Noah Cullen went missing on Monday afternoon. His boat was found later that day partially submerged about seven nautical miles off shore.
    
Another boater contacted the Coast Guard after seeing the 28-foot, abandoned sailboat. The Coast Guard contacted Cullen's family. They said he was overdue from the boat trip.
    
The Coast Guard searched for more than 90 hours, covering about 5,277 square nautical miles.

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