Editing Hydrographic survey (section)

=== Private organizations ===
Commercial entities also conduct large-scale hydrographic and [[Geophysics|geophysical]] surveying, particularly in the dredging, marine construction, [[oil exploration]], and drilling industries. Industrial entities installing submarine communications cables<ref>{{Cite web |url=http://www.setech-uk.com/pdf/Paper2.pdf |title=Hydrographic Information and the Submarine Cable Industry |archive-url=https://web.archive.org/web/20100331195933/http://www.setech-uk.com/pdf/Paper2.pdf |archive-date=31 March 2010 |url-status=dead}}</ref> or power<ref>{{Cite news |url=http://sanpedrosun.net/old/belcable.html |title=BEL submarine cable survey complete |newspaper=The San Pedro Sun |url-status=dead |archive-url=https://web.archive.org/web/20110930104855/http://sanpedrosun.net/old/belcable.html |archive-date=September 30, 2011}}</ref> require detailed surveys of cable routes prior to installation and increasingly use acoustic imagery equipment previously found only in military applications when conducting their surveys.<ref>{{Cite web |url=http://www.hydro-international.com/news/id2826-Utec_Surveyor_Equipped_for_Deep_Ocean_Cable_Route_Surveys.html |archive-url=https://web.archive.org/web/20090215152026/http://hydro-international.com/news/id2826-Utec_Surveyor_Equipped_for_Deep_Ocean_Cable_Route_Surveys.html |archive-date=15 February 2009 |title=Utec Surveyor Equipped for Deep Ocean Cable Route Surveys}}</ref> Specialized companies exist that have both the equipment and expertise to contract with both commercial and governmental entities to perform such surveys .

Companies, universities, and investment groups will often fund hydrographic surveys of public waterways prior to developing areas adjacent those waterways. Survey firms are also contracted to survey in support of design and engineering firms that are under contract for large public projects.<ref>{{Cite web |url=http://www.hydro-international.com/news/id3583-Infrastructure_Survey_in_Turkey.html |archive-url=https://web.archive.org/web/20101122075416/http://www.hydro-international.com/news/id3583-Infrastructure_Survey_in_Turkey.html |archive-date=22 November 2010 |title=Infrastructure Survey in Turkey |date=14 December 2009}}</ref> Private surveys are also conducted before dredging operations and after these operations are completed.  Companies with large private slips, docks, or other waterfront installations have their facilities and the open water near their facilities surveyed regularly, as do islands in areas subject to variable erosion such as in the Maldives.