Some of the episode was filmed on Lake Ontario, and certain scenes were filmed in London, Ontario, at the Robarts School for the Deaf, which has a pool equipped with a hydraulic floor that can be lowered to a depth of zero to 1.5 meters and tilted 13 degrees - perfect for simulating a sinking freighter which has been damaged by a ghost ship's cannonball.
Paul Gross was required to take scuba diving lessons for his part in this story, which requires rescuing Kowalski from certain death.
During the opening scene where Fraser and Kowalski are talking about having to make a jump is a reference to Butch Cassidy and the Sundance Kid (1969) where nearly the exact conversation happens.