Hydrography

Geographical Coordinates

The geographical coordinates are two: the latitude and the longitude. They determine the exact position of places and navigable means on the Earth’s surface. The network of geographical coordinates on the elliptic or on the sphere is a network of meridians and parallels. Is, in fact, a system of surface coordinates and presents in two […]
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The Role of Ηydrography

On 21st June each year the International Hydrographic Organization celebrates World Hydrography Day. Hydrography Day is an opportunity to increase public awareness of the vital role that Hydrography plays in everyone’s life. The theme for this year’s World Hydrography Day is: “Hydrography – underpinning the blue economy”. Hydrography and “Blue Economy” The term “blue economy” […]
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