jueves, 10 de marzo de 2011

ELECTRONIC AIDS TO NAVIGATION

ECHO SOUNDER

IT SENDS A RADIO SIGNAL FROM THE BOTTOM OF THE SHIP TO THE SEA-BED, FROM WHICH IT IS REFLECTED.




SONAR SYSTEM


For safe navigation, the following equipments are available:
a. Magnetic and Gyro compass, GPS receivers: for position or location finding
b. Echo sounders: for finding the depth below the ship
c. Wind Speed and Direction instruments
d. Electric or Air Siren
e. Speed log: to measure the speed of the ship
f. Navigational radars
         g. Signaling projectors

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