Multiple Choice
An echo sounder operates by measuring the time required for a ________.
A) light beam to travel from a satellite at a known altitude to the sea bottom and back
B) radar beam to travel from a harbour patrol boat to a fuzz-buster on a speeding yacht
C) radar beam to travel from a ship to the seafloor and back
D) sound pulse to travel from a ship or survey towfish to the seafloor and back
Correct Answer:
Verified
Correct Answer:
Verified
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