- Canadian Hydrographic Service
"Canadian Hydrographic Service logo or crest"The Canadian Hydrographic Service (CHS) is
Canada 'shydrographic office , with responsibility for performinghydrographic survey s and publishing paper and electronic nautical charts. CHS also represents Canada in theInternational Hydrographic Organization .History
Prior to Confederation, responsibilities for hydrographic survey and chart production in
British North America rested with theRoyal Navy .In 1882, the loss of the steamship "SS Asia" on an uncharted shoal in
Georgian Bay resulted in 150 fatalities and was Canada's worst maritime disaster at the time. OnAugust 13 ,1883 , theDominion government established the Georgian Bay Survey which was empowered by legislation with the responsibility to survey and chart navigable waters of Georgian Bay andLake Huron .Surveying and charting was extended to Canada's Pacific coast in 1891, tidal and current metering nationwide began in 1893, surveying and charting extended to the Maritimes by 1905, and water level gauging of the Great Lakes began in 1912.
In 1904, a Privy Council order renamed the Georgian Bay Survey to the Hydrographic Survey of Canada with some modified responsibilities. In 1913 one of Canada's most famous hydrographic survey vessels, CSS "Acadia" was commissioned for use on the Atlantic coast. In 1928, the organization was renamed to the current name Canadian Hydrographic Service. Responsibility was extended on
March 31 ,1949 with the entry of Newfoundland into Confederation, with CHS taking over surveys and charting around the island of Newfoundland and the coast ofLabrador from the Royal Navy.Technology
CHS has been a world leader in the adoption of hydrographic survey technology, as well as in research and development. With responsibility for charting the world's longest coastline (243,792
kilometres ) as well as 6.55 million square kilometres ofcontinental shelf and territorial waters (2nd largest in the world) including extensive inland waterways such as theSt. Lawrence Seaway , CHS uses relatively meagre financial resources to maintain a world-record inventory of over 1000 published charts, and as such, the organization was an early adopter of single-beam sonar, radio-navigation positioning systems, and computer processing and storage.The joint Canada-U.S.
DEW Line also necessitated innovative surveying techniques throughout remote northern areas in theCanadian Arctic Archipelago in support of ships carrying logistics and construction material. CHS is one of the only hydrographic offices in the world with the capability to undertake Arctic surveying, frequently operating in waters which are frozen between 10-12 months of the year.CHS has migrated from single-beam sonar to becoming a major user of multibeam echo sounder sonar systems coupled with
GPS to achieve improved survey accuracies. CHS was also one of the first organizations in the world to develop airborneLIDAR technology, with the LARSEN-500 sensor being used for remote Arctic surveys. Survey data processing software provided by companies such asCARIS and Helical Systems, as well as the development ofOracle Spatial database storage, are spin-offs from research developments at CHS, and are now used throughout the world by other Hydrographic Offices and in the geo-spatial technology industry.Department of Fisheries and Oceans
Unlike most nations, the CHS is not part of Canada's navy, but is rather a civilian scientific organization under the federal government's Department of Fisheries and Oceans (DFO). All survey vessels employed by CHS are nominally crewed and operated by the
Canadian Coast Guard , also part of DFO.The director of CHS is also called the "Dominion Hydrographer", a tradition which dates to the earliest days of hydrographic surveying in Canada.
Major CHS offices
* CHS Atlantic,
Bedford Institute of Oceanography (BIO),Dartmouth, Nova Scotia
* CHS Pacific,Institute of Ocean Sciences (IOS),Sidney, British Columbia
* CHS Newfoundland and Labrador,Northwest Atlantic Fisheries Centre (NAFC),St. John's, Newfoundland and Labrador
* CHS Quebec,Maurice Lamontagne Institute (MLI),Mont-Joli, Quebec
* CHS Central & Arctic,Canada Centre for Inland Waters (CCIW),Burlington, Ontario External links
* [http://www.charts.gc.ca Canadian Hydrographic Service - Official web site]
* [http://www.canfoh.org "Canadian Friends of Hydrography"]
* [http://www.charts.gc.ca/pub/en/about/background.asp History of the CHS]
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