Navigation & Communication

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Navigation & Communication:

Navigational instruments refer to the instruments used by nautical navigators and pilots as tools of their trade. The purpose of navigation is to ascertain the present position and to determine the speed, direction etc. to arrive at the port or point of destination.

Communication at sea involves the transfer of intelligence (information) between various points at sea or shore, i.e. ship-to-shore and ship-to-ship communication. The way to communication is possible by sound or visual signaling and by radio or electronic communications. Signaling is divided into flag signaling, flashing light signaling using Morse symbols, sound signaling by Morse symbol, or voice signaling over a loud hailer, and signaling by radio, i.e. radiotelegraphy. Maritime communications are used for safety, navigational, commercial and miscellaneous purposes.