An echo sounder operates by measuring the time required for a . radar beam to travel from a harbor patrol boat to a fuzz-buster on a speeding yacht sound pulse travels from a ship to the seafloor and back light beam to travel from a satellite at a known altitude to the sea bottom and back radar beam to travel from a ship to the seafloor and back
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An echo sounder operates by measuring the time required for a . radar beam to travel from a harbor p...
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