Provincial police say a man is facing charges after a woman was seriously injured in a collision involving a boat.

Investigators say a 31-year-old Cambridge woman was thrown from a fishing boat when it hit a break wall at a Lakeshore, Ont., marina on Saturday afternoon.

A 34-year-old Caledonia man is charged with dangerous operation of a vessel causing bodily harm and operating a vessel with over 80 milligrams of alcohol in his blood causing bodily harm.

Investigators say a number of people are believed to have witnessed the collision.

Anyone with information is asked to contact police.