Noun
sonobuoy (plural sonobuoys)
(nautical, military) A buoy that sends a radio signal when it detects the sound of underwater objects (such as submarines).
Active sonobuoy fields may be operated multistatically. Source: Internet
Fifty-nine sonobuoy chutes are fitted, as well as a dedicated Search and Rescue (SAR) chute. Source: Internet
The conversion consisted of adding 10 new helicopter calibrating stations, installing sonar sonobuoy readout and analysis center and associated equipment, and changing a large portion of the ship's operating procedures. Source: Internet
With no remaining sonobuoy processing capability, most of the sonobuoy chutes were faired over with a blanking plate. Source: Internet