asdic

as·dic (az′dik)

noun

Brit. sonar

Etymology: a(nti-)s(ubmarine) d(etection) i(nvestigation) c(ommittee)

Modifies a noun

dome: And the ASDIC dome was inside that used to send a signal out and you could tell how long.
operator: Then there were the revolutions of her engines; the Asdic operator could make a shot at counting the beat of the propellers.
target: She was later raised, but was sunk again intentionally in 1957 for use as an ASDIC target.
set: Jack was now at his action station on the Asdic set.
device: The main work was the production of the domes to house top secret asdic devices to locate submarines.

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