An introduction to the physics of underwater sound and their application to passive anti-submarine warfare

Summary form only given. The need has been recognized for a thorough understanding of the basic principles of underwater sound, as the primary phenomenon governing the application of passive antisubmarine warfare. The author describes the basics of underwater acoustics and its association with the undersea warfare effort. He presents some highlights of the present state-of-the-art applications in passive antisubmarine warfare and gives some possible future directions that this field might pursue