Spotter planes can no longer directly see enemy submarines. Today, their mission is overwhelmingly acoustic—listening to signals from submarines and narrowing down their likely position before taking ...

Lockheed Martin has secured a potential five-year, $479.9 million contract from the U.S. Navy to support the AN/SQQ-89A(V)15 anti-submarine warfare combat system. The Navy’s latest contract action ...

Submarines are hard to find. They exploit ocean depth, acoustic complexity, and thermal layers to maintain low observability and high survivability. Diesel-electric submarines are especially quiet at ...