Lockheed Nudges Into a $5 Billion Contract for Sonobuoys

Lockheed Nudges Into a $5 Billion Contract for Sonobuoys

 

Sonobuoys; interesting. Drop a few in the ocean. The sonobuoy lowers a listening device into the ocean and raises an antenna at the same time. Any sounds are transmitted to the antenna and aircraft monitor those sounds.
One time off the coast of Vietnam, Haiphong Harbor, a sonobuoy picked up the sound of a submarine. The sound was processed and determined it was from a British submarine. The submarine quickly surfaced and grabbed the sonobuoy and took it inside the submarine, but not before the helicopter had the sonobuoy spray an inky substance inside the submarine. The sailors yelling and cursing showed they were British by the Limey accent. Even then they denied being in a war zone, but too late.

 

Every ship has a distinct sound from the propellers. Those sounds are recorded and after that those sounds identify the ship which then identifies the name of the ships Commanding Officer.