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Echo Sounders
Rp.198.500.000
Rp.296.500.000
Rp.202.500.000
Rp.496.350.000
Rp.141.500.000
Rp.323.156.000
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Echo sounding is a type of sonar used to determine the depth of water by transmitting acoustic waves into water. The time interval between emission and return of a pulse is recorded, which is used to determine the depth of water along with the speed of sound in water at the time