SANTA CRUZ, Calif. — Scientists have discovered that dolphins are far more sensitive to military sonar systems than previously believed, responding to sound levels far below what experts thought ...

The US hasn’t faced any real naval threat in decades. During the 1970s, however, the Soviet Union was developing quieter submarines. At the same time, the ocean itself was getting noisier from ...

Rear Adm. Larry Rice, director of the Chief of Naval Operations Environmental Readiness Division (N45), recently discussed why training with sonar is important and vital to national security.

The Italian FREMM Alpino prepares to deploy its variable-depth sonar in May 2018. (Staff photo by David B. Larter) WASHINGTON — The U.S. Navy will end its work with Raytheon Technologies ...

Kendall said the sound intensity of the sonar, ... but it had to limit its sonar use whenever a marine mammal is spotted within 1.25 miles of any sonar source. The chief of naval operations, ...

The US Navy is outfitting a pair of its submarines with new technologies that will improve its sonar and cut back on the noise of the boat's nuclear-powered steam generator. The new techs are ...

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The U.S. Navy is seeking permits to expand sonar and other training exercises off the Pacific Coast, a proposal raising concerns from animal advocates who say that more sonar-emitting buoys would ...

Naval Sea Systems Command (NAVSEA) on 7 February released an RfI on potential sources for a mature, fielded variable-depth sonar (VDS) system that could equip the in-development Constellation-class ...