Chinese researchers claim they can now detect even the stealthiest submarines—posing a new challenge to U.S. naval supremacy.China has shifted the game by exploring new methods that focus on magnetic detection—an area where submarines cannot easily hide.As a submarine moves through water, it produces a V-shaped surface disturbance known as a Kelvin wake. This disturbance generates a faint magnetic field when ions in seawater interact with the Earth’s geomagnetic field. A revolutionary method for detecting submarines involves analyzing the magnetic fields created by submarine. Other breakthroughs include electromagnetic wave detectors and even airborne “ghost radar” technology capable of emitting low-frequency waves to penetrate seawater and detect submarines hundreds of meters below the surface.
