This Canadian industry comprises establishments primarily engaged in salvaging ships and their cargoes. Typical salvage situations include rescue towing, rescuing strandings and raising sunken vessels.

This Canadian industry comprises establishments primarily engaged in providing piloting service to ships when entering or leaving harbours or where required by law. The areas in which the services of a marine pilot are essential are generally referred to as pilotage waters.

This Canadian industry comprises establishments, not classified to any other Canadian industry, primarily engaged in providing navigational services to shipping.