How to operate ECO SOUNDER and it's function.

0:20 =Depth under the keel (beneath the ship)

Echo sounder measures the depth of water by measuring the time for a pulse of energy to travel to the sea bed and back and work on the principle of reflection of acoustic energy.

Short pulse of sound energy is transmitted vertically down from the ship.

This pulse having been reflected from the sea bottom returns to the ship in the form of an echo.

Travel time (t) taken for its return, depends upon the depth of water (d), and on the velocity of sound (v) through the water.

Time taken (t ) = (2 x d) / v  or d =(v x t)/2

Performance of a sonar system depends on the accuracy with which the velocity of source propagation is measured.

Application of echo-sounding principles to submarine detection during World War II resulted in the development of equipment to sound all ocean depths

PKO( Practical Knowledge Onboard)
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[rahulchauhan]

By the way good work... u r showing practical things... and how things happens actually on-board.. good to see a good channel for mariners. Keep it up

[Bmjj]

thank you very much sir for this video keep it up from the philippines

[akmalidamal]

How to pop up the sea floor on skrin..my sea floor on echo Sounder lost..

[manikantamaganti]

How to unmute the alarms sound please tell me bro

[rahulchauhan]

0:20 depth of the ship or depth of water under keel??

[rahulchauhan]

2:27 full of DBS - draft below surface?? R u sure?