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CHS is 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 of continental shelf and territorial waters (second largest in the world), including extensive inland waterways such as the St. Lawrence Seaway, CHS ...
This is an average of lowest low waters taken over a fixed period of tidal predictions, as opposed to actual observations. This is the datum used for coastal charts published by the Canadian Hydrographic Service, [11] with the average taken from the lowest tides, one from each 19 year period of tidal predictions. [12]
CSS Acadia is a former hydrographic and oceanographic research ship of the Hydrographic Survey of Canada and its successor, the Canadian Hydrographic Service. Acadia for 56 years from 1913 to 1969, charting the coastline of almost every part of Eastern Canada including pioneering surveys of Hudson Bay.
Canada- Canadian Hydrographic Service Chile – Hydrographic and Oceanographic Service of the Chilean Navy China – Chinese Maritime Safety Administration Colombia – Colombian National Ministry of Defence, Colombian Navy, General Maritime Directorate Croatia – Hydrographic Institute of the Republic of Croatia
The ship operated within the Canadian Coast Guard Maritimes region. Matthew was primarily used to carry out hydrographic survey work primarily for the production of nautical charting products on the East and West Coasts, but could also be used for stock assessment using sonar. In 2016, the ship was taken out of service and put up for sale.
Hydrographic officers who produce of nautical publications also provide a system to inform mariners of changes that effect the chart. In the US and the UK, corrections and notifications of new editions are provided by various governmental agencies by way of Notice to Mariners , Local Notice to Mariners , Summary of Corrections , and Broadcast ...
Canadian Hydrographic Service Chart 1550 - Britannia Bay to Chats Falls covers the whole of Lac Deschênes. [14] The Canadian Coast Guard maintains lights and buoys on the lake, [ 15 ] however local emergency services in Ottawa [ 16 ] and Gatineau are responsible for providing search and rescue services within their respective city boundaries.
On nautical charts, the top of the chart is always true north, rather than magnetic north, towards which a compass points. Most charts include a compass rose depicting the variation between magnetic and true north. However, the use of the Mercator projection has drawbacks. This projection shows the lines of longitude as parallel.