The Transportation Safety Board of Canada says it has deployed a team of investigators after a collision and sinking of a workboat near Squamish, B.C., last month.
It says the incident happened on Dec. 18.
Liam MacDonald, a spokesman for the agency, says a tug boat called the Haisla Northwind, which was carrying three people and towing a barge, struck the workboat in Howe Sound.
MacDonald confirms the workboat sank as a result of the crash.
He says the sole crew member aboard the workboat was rescued and treated for hypothermia.
MacDonald says investigators were on site on Thursday to wait for the workboat to be retrieved from the water by the owners and the insurance company.