Sonar systems are essential for underwater mapping and object detection ... The next steps would be trying to retrieve the plane's black boxes, which would enable investigators to piece together ...

WASHINGTON (CNN)-- In what a U.S. military official calls an "inadvertent encounter," a Chinese submarine hit an underwater sonar array being towed by the destroyer USS John McCain on Thursday.

Klein Marine Systems, a leader in sonar technology, has received a contract to provide Synthetic Aperture Sonar (SAS) ...