Echo Sounder — synonyms, definition

1. echo sounder (Noun)

2 synonyms
asdic sonar
1 definition

echo sounder (Noun) — A measuring instrument that sends out an acoustic pulse in water and measures distances in terms of the time for the echo of the pulse to return. ex. "echo sounder is an acronym for sound navigation ranging"

4 types of
measuring device measuring instrument measuring system navigational instrument
2 parts
pinger pulse generator
4 parts of
U-boat pigboat sub submarine