forecasts were prepared. False-contact data were incorporated into 

 an automatic data processing system to be used in providing whale 

 density information in the conduct of field experiments and in the 

 revision of the false target and bioacoustic content of the 

 NAVOCEANO publication, "Applications of Oceanography to ASW 

 Warfare" (H.O. Pub. 781). 



Another effort, synoptic oceanographic modeling, is concerned 

 with describing three-dimensional variations of the ocean's physical 

 characteristics including investigations of the causative physical 

 and dynamic processes and formulation of techniques to permit 

 prediction of these variations. 



In FY '73 the conversion of the automated shipboard forecasting 

 system to the CP 642-73 computer under the integrated command 

 ASW prediction system was completed. These programs, which 

 include acoustic prediction programs provided by the U.S. Navy 

 Acoustic Modeling Coordinator, can be operated in the Integrated 

 Operational Intelligence Center on all CV and CVA class aircraft 

 carriers. The programs include access to historical environmental 

 data, merges of synoptic and climatological data, and preparation of 

 tactical acoustic indices for a variety of applications to sonar models 

 and sonobuoys. Initial field installation and evaluation was made 

 aboard the U.S.S. Kitty Hawk in 1973. 



Ocean Science 



The Navy ocean science program seeks to provide sufficient 

 knowledge of underwater acoustics, physical oceanography, oceanic 

 geology and geophysics, biological oceanography, and chemical 

 oceanography to enable Navy planners, designers, and operators to 

 optimize system design and performance. While the ocean science 

 program responds to the full spectrum of Navy and Marine Corps 

 missions for strategic deterrence, sea control, projection of power 

 ashore, and ocean support, the greatest part of the program 

 concentrates on the narrower field of ASW. Activity within the 

 ocean science program ranges from the broad contract research 

 program of the Office of Naval Research to detailed investigation of 

 the effect of ocean environmental factors on specific systems. 



In underwater acoustics, substantial work is underway in three 

 major areas: sound transmission through the water, ambient noise in 

 the ocean, and the modeling of environmental conditions to predict 

 system performance. 



Sound transmission R&D is concerned with the identification and 

 evaluation of the many paths sound can take as it travels through the 

 water from a source to a receiver and the determination of how it is 

 affected by the environment. A combined theoretical and 

 experimental program is underway to further understanding of 



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