SHAW Kathryn <br/><br/>
Sonar sentinels on guard for underwater swimmers/ 
by Kathryn Shaw, Richard Scott and Grzegorz Holdanowicz 
 -  2005 
<br/><br/> Concerns over the vulnerability of ports and coastal infrastructure to terrorist attacks are driving the development of a new generation of sonar systems designed to provide early warning of diver intrusion. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COUNTERTERRORISM<br/>UNDERWATER DETECTION SYSTEMS<br/>PORT SECURITY<br/>SWIMMER DETECTION<br/>SONAR SYSTEMS