Beached_DSC_6809An unmanned 37-foot trimaran boat washed ashore Monday on Dockweiler State Beach in Playa del Rey, leaving authorities trying to piece together what happened.

Authorities located the vessel’s owner on Wednesday and don’t suspect foul play, said Lt. Chris Perez of the Sheriff’s Dept.’s Marina del Rey Station. It appears the boat somehow broke free from where it was anchored offshore before washing up on the beach with a hole in its bow, Perez said.

“There were turbulent waters [on Monday] and that might have caused the vessel to break away from its mooring,” said L.A. County Beaches and Harbor Dept. spokeswoman Carol Baker.

The boat ran aground at about 4:45 p.m., according to the Facebook page of the Los Angeles County Fire Dept.’s Lifeguard Division.

By 7 p.m., lifeguards and Beaches and Harbor personnel had towed the boat to a storage dock in Marina del Rey, where it remains in Sheriff’s Dept. custody.

— Gary Walker