PORTLAND, Maine — A Vinalhaven man pleaded guilty to a charge of making a false distress call to the U.S. Coast Guard during an appearance Wednesday in U.S. District Court.

Owen R. Adair, 23, was accused of using a VHF radio to initiate a two-way radio conversation with a radio operator with U.S. United States Coast Guard Sector Northern New England on Sept. 30, 2014, according to U.S. Attorney Thomas E. Delahanty II.

“In ensuing transmissions, Adair repeatedly told the Coast Guard operator that he urgently needed assistance because a crewman on his fishing vessel had sustained a serious injury and was bleeding badly,” Delahanty said.

“In fact, the defendant was not aboard a vessel but was ashore on Vinalhaven Island and was using a VHS radio in his truck,” Delahanty said. “There was no injured person.”

The Coast Guard deployed a search and rescue vessel from Rockland. After a four-hour search, the Coast Guard called off the search and concluded the distress call was a hoax.

Adair faces up to six years in federal prison, a $250,000 fine and three years of supervised release. He will be sentenced after the completion of a presentence investigation report by the U.S. Probation Office.

The investigation that led to the guilty plea was conducted by the Coast Guard Investigative Service.

The hoax distress call episode was not Adair’s first brush with the law. In January, he was among three people arrested in connection with a methamphetamine making operation on Vinalhaven

Last year, he was arrested on theft and several other related charges after he allegedly stole a pickup truck from a Thomaston repair shop and drove it to the Winterport fire station.

Also last year, Adair and an accomplice and served jail time after pleading guilty to stealing batteries from a pair of cars on Vinalhaven.