KENNEBUNK, Maine (WMTW) The U.S. Coast Guard is investigating a collision between two tug boats off the Maine coast.
The collision happened Thursday morning about three miles south of Kennebunk, officials said.
A crewmember aboard the 40-foot tugboat Helen Louise said their vessel collided with the 80-foot tugboat Capt Mackintire while they were in tow, officials said.
The Capt Mackintire had no crewmembers on board.
While in transit back to Portland, the Capt Mackintire began taking on water and sunk.
The Coast Guard is working with several departments to limits the sinking's environmental impact.