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

Lockheed Martin Corporation’s LMT unit, Rotary and Mission Systems, recently clinched a modification contract to procure ...

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 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 ...

Fitted to the array is sophisticated sonar equipment, which, in this incident, was in a collision with the Russian submarine. HMS Northumberland was tracking the underwater vessel at the time of ...

The Royal Navy spent several days investigating a suspected Russian stealth submarine off the coast of Scotland, only to discover the mysterious sona ...

A Russian submarine collided with a Royal Navy warship's sonar on patrol in the North Atlantic, the Ministry of Defence has confirmed. HMS Northumberland had been tracking the submarine when it ...