Several low AERIAL SHOTs of icebreaker CCGS "JOHN A MACDONALD" sailing arctic waters, in open water and amongst ice floes. Shots of ship heaving through sea of broken ice seen from deck rail. Shots of ship sailing through frazil ice (newly formed ice almost invisible except when broken). HAS of bow of the "John A MacDonald" showing bow-wave. Shots of iceberg from deck, man in foreground taking pictures, other icebergs in background.