Agency:.Co-produced by the NFB and the Canadian Department of Fisheries and Oceans.

Director, Guy Dufaux ; camera, Guy Dufaux ; producer, Jacques Bobet ; script, William Hansen ; sound, Richard Besse ; editing, Ian Rankin ; animation, Daniel Langlois ; music, Ben Low.

Recorded 1982.

During the brief, ice-free summer of the Beaufort Sea, thirty members of the Canadian Hydrographic Service on board the C.S.S. Hudson, are charting a sixteen km-wide shipping corridor that will permit transport of Arctic gas and oil by deep-draught tankers through the Northwest Passage. Colourful computer-animated graphics and on-location footage illustrate how navigation charts are made and how sophisticated electronics have facilitated the task of the modern-day hydrographer.

Mode of access: World Wide Web.

Description based on online resource; title from title screen (National Film Board of Canada, viewed 2023-08-10).