USCG USCG GENNAV
Set 6 • Question #156 of 246
Launch Interactive Practice Room An electronic depth finder operates on the principle that __________.
A
radio signals reflect from a solid surface
B
sound waves travel at a constant speed through water
✓ Correct Answer
C
radar signals travel at a constant speed through water
D
pressure increases with depth
USCG NMC Regulatory Explanation
In USCG General Navigation principles (Bowditch, Light Lists, and Coast Pilots), regarding 'An electronic depth finder operates on the principle that', the verified fact is: 'sound waves travel at a constant speed through water'.
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