Whidbey Island police are on the lookout for a missing person in Langley.

Allen Fletcher, 30, was last seen intoxicated the night of Nov. 18 near the South Whidbey Harbor marina. Members of the Snohomish County Sheriff’s Office dive team spent several hours at the harbor looking for clues, or a body, and found only a navy-style coat underwater.

“It doesn’t look good if we found his jacket at the bottom of the water,” said Dave Marks, acting police chief of the Langley Police Department.

“There’s really a strong current in there.”

Fletcher, whose last known residence was in Port Townsend, reportedly was helping a couple sail from Edmonds to Bellingham. The couple, according to a Langley police report, did not know Fletcher prior to welcoming him aboard the boat. Along the way, Fletcher, listed as 5 feet, 11 inches tall and weighing 160 pounds, reportedly became “extremely intoxicated” and his behavior “changed for the worse,” according to the report. When the couple stopped in Langley for the night on Nov. 18, they asked Fletcher to sleep on shore because they were afraid of him.

The next day, when the couple awoke and did not find Fletcher, they decided to continue sailing without him.

“The one drawback about this is we weren’t notified until last Friday,” said Lt. Charlie Liggitt, the Langley Police officer in charge of the incident.

A Sunrise Lane resident who lives near the marina saw Fletcher that night just before midnight. The resident’s description matched that of Fletcher, including a dark navy coat.

Someone working on the marina expansion found the jacket with a cell phone in the pocket, but did not bring it to the surface and left it at the bottom some time ago.

When the Snohomish dive team found the jacket, no phone was found, and nothing was in the pockets. The state of the jacket, however, did not lead investigators to believe he drowned in the coat, given that it was still right-side out.

“It was found like it was on a hanger,” Chief Marks said.

Langley police do not suspect suicide or foul play.

“We have no evidence that points us in that direction,” Liggitt said. “We have witnesses that saw him on land. We don’t have any disturbance calls down there.”

Fletcher did not have any known mental illness or behavioral disorders and Liggitt said he was not suicidal.

Tracking him 10 days after the last date Fletcher was seen proved difficult, said Liggitt, because he could have caught the free Island Transit to the Clinton ferry, which is free for walk-on passengers to Mukilteo.

Anyone with knowledge of Fletcher’s whereabouts is asked to call the Langley Police Department at 360-221-4433 or 911.