DOCK AND HARBOURS ENGINEERING


DOCK AND HARBOURS ENGINEERING

Unit- 1: SEA AND TIDES
1-1. GENERAL:
Everyone knows that water covers three-fourths of the earth's surface and the land accounts only for the one-fourth. And still how little do we know of this area covered with water.
The body and mass of water covering the earth surface, and here we are not talking of landlocked water areas called lakes, is divided, for purposes of recognition, into various "seas" and "oceans". Big water masses are oceans, such as the Pacific Ocean or the Indian Ocean, whereas comparatively smaller water masses are called seas, such as the Arabian Sea or the Mediterranean.
In the design of docks and harbors, we are not directly concerned about the happenings in the seas and their behavior. We are, however, very much concerned with the consequences at and near the shore.


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