Hydrography
Hydrography is a subject of Geography. It concerns itself with measuring the physical characteristics of waters, such as rivers, lakes and oceans.[1] It can also be about such measurement in navigable waters, as they are necessary for the safe passage of ships and vessels.
Massive hydrographical studies are usually undertaken by national or international organizations that sponsor data collection through surveys and publication of charts and descriptive materials for navigational purposes.[2]
Hydrography's origin lies in the making of chart like drawings and notations made by individual mariners. It was usually a private property, even closely held secrets, used for commercial or military advantage.
Hydrography Media
Table of geography, hydrography, and navigation, from a 1728 Cyclopaedia.
Alexander Dalrymple, the first Hydrographer of the Navy in the United Kingdom, appointed in 1795.
Survey of the strategic port of Milford Haven produced by Lewis Morris in 1748
HMS Waterwitch, a hydrographic survey vessel
