China’s “Underwater Great Wall” effort to create anti-submarine systems is growing more sophisticated.

Moving horizontally across the screen one can read the sound waves for different directions. Remember, when in a submarine one must think up and down as well as left and right. Sonar technicians ...

Military submarines have both passive and active SONAR. Passive SONAR is always listening for different sounds to determine if there are mechanical or biological objects nearby. When the crew ...

The mysterious banging sounds that rang underwater during the ... which were detected at 30-minute intervals, were picked up on sonar by a Canadian Air Force surveillance aircraft.

The time between sending and receiving a sonar sound pulse that detects a submarine on the seabed is 0.12 s. Calculate how far below the ship the submarine is.

The US Navy is outfitting a pair of its submarines with ... will reduce the boat's sonar signature. Inside the hull, the engine room is being fitted with about a dozen sound-deadening tricks ...

Could China's new magnetic wake detection technology mark the end of stealth submarine warfare? Recent Chinese research suggests it might.T ...

The UKs Royal Navy reportedly mistook a marine mammal for the Red October British ships spent several days tracking down a ...

Marine mammal research is a key spin-off of the work of the Acoustics and Sonar department. This department wants to maintain and extend the national technology base in the field of sonar systems, the ...