Mr. Speaker, I would like to thank the hon. member for his very important question.
Prior to the arrival of any vessel at any Canadian port, the ship's master is required to send a list of crew members 24 hours before it arrives in Canada. Customs officers go through the list using our databank. Before the vessel leaves its last Canadian port, the ship's master is required to give to Canada Customs any modifications to that list with regard to crew members.