Charting Northern Waters also offers a detailed review of Russian hydrography on their northern coast from 1900 to 1940 and an in-depth discussion of American oceanographic work in the north in 1951. Other topics include the Labrador survey of HMS Challenger in 1932-34, German hydrographic and oceanographic support of the U-boat campaign in Canadian waters during World War II, and Canadian technical developments over the past fifty years.