Hydrographic survey

Neptune, a privately owned survey ship based in Chicago, Illinois.

A U.S. Coast and Geodetic Survey diagram of wire-drag hydrographic survey operations, ca. 1920. The basic principle is to drag a wire attached to two vessels at a set depth; if the wire encounters an obstruction it will come taut and form a

Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities. Strong emphasis is placed on soundings, shorelines, tides, currents, seabed and submerged obstructions that relate to the previously mentioned activities. The term hydrography is l used synonymously to describe maritime cartography, which in the final stages of the hydrographic process uses the raw data collected through hydrographic survey into information usable by the end user.

单词	Hydrographic survey
释义	Hydrographic survey 原声例句 Reel知识卷轴 We carried out a hydrographic survey of around two nautical miles by one nautical mile. 我们进行了大约两海里乘一海里的水文测量。英语百科 Hydrographic survey Hydrographic survey is the science of measurement and description of features which affect maritime navigation, marine construction, dredging, offshore oil exploration/offshore oil drilling and related activities. Strong emphasis is placed on soundings, shorelines, tides, currents, seabed and submerged obstructions that relate to the previously mentioned activities. The term hydrography is l used synonymously to describe maritime cartography, which in the final stages of the hydrographic process uses the raw data collected through hydrographic survey into information usable by the end user.
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