MARINE POLLUTION MITIGATIONBY ANDREW SAFERThe CCGS John G. Diefenbaker model remotely-controlled by a former icebreaker captain while it was being tested in the ice tank. (Photo: National Research Council of Canada)34 Maritime Reporter & Engineering News • FEBRUARY 2017MR #2 (34-41).indd 34 MR #2 (34-41).indd 34 2/6/2017 11:13:08 AM2/6/2017 11:13:08 AM