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2009-10-20 23:21
Mdnavman 700×452× (100256 bytes) {{Information |Description = A [[United States Coast and Geodetic Survey]] diagram of [[wire drag]] [[hydrographic survey]] operations. The basic principle is to drag a wire attached to two vessels; if the wire encounters an obstruction it will come t
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{{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|A
en:United States Coast and Geodetic Survey diagram of
en:wire drag [[:en:hydrographic...
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