Antisubmarine warfare

Much of the mathematics involved in calculating screen characteristics came from World War II military-based operations analysis and research, where it was important for design of radar, antiair and antisubmarine warfare systems and operations (Garrett and London, 1970). 

The committee discussed, but ultimately decided not to recommend, establishing a separate command to lead Navy warfighting efforts in chemical and biological threat environments. Unlike Navy mission areas (such as antisubmarine warfare), chemical or biological attack or the threat of such attack defines an environment in which all naval forces must be prepared to carry out their as-... 

Military program managers and field commanders believe that in future military conflicts the UAVs will play a critical role in battlefields and in remote hostile areas. Technical articles published in the June 2009 edition of Military and Aerospace Electronics revealed that defense planners are leaning toward the deployment of unmanned vehicles for underwater reconnaissance, mine detection and destruction, and antisubmarine warfare activities. Furthermore, military commanders are considering the deployment of robot vehicles to undertake reconnaissance, surveillance, target acquisition, mine and I ED detection, and disposal missions in forward battlefield areas. Some of these vehicles are equipped with deadly Hellfire missiles to destroy hostile targets. 

Because of the high cost of silver, the impracticality of recovering it after use, other nonsilver water-activated batteries were developed, primarily as the power source for antisubmarine warfare (ASW) equipment. 

Dipping sonar devices equip manned antisubmarine helicopters and fixed-wing aircraft the aircraft flies low and suspends a sonar device at the end of a wire-link which is held just below the surface of the w. The sonar technique is also used in sonabuoys, which use active or passive sonar to detect and locate submarines. Sonabuoys provide anti-submarine warfare data to aircraft which cannot dip sonar devices while hovering overhead, the data being transmitted by coded radio signals... 

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