PREDICTION AND SURVEY 93 



particular sediment regime are presently being performed in the laboratory 

 on sediment samples from various riverine and oceanic environments. 



Techniques are being developed for inferring from oceanographic con- 

 ditions in surveyable areas those parameters affecting mines and mining; 

 search and detection; swimmer activity; and amphibious and other naval 

 operations in shallow water areas, including straits, river mouths, estuaries, 

 and open coasts. 



A program is being undertaken to develop, test, and evaluate advanced 

 riverine survey techniques and oceanographic/hydrologic data analysis 

 methods to provide predictions on tides, currents, and water levels in sup- 

 port of naval operations in Southeast Asia. This development, testing and 

 evaluation effort is carried on in South Vietnam as part of the River Survey 

 Team effort. This team is composed of Marine Corps surveyors and Naval 

 Oceanographic Office civilian specialists who operate in direct support to 

 Commander, Naval Forces Vietnam for the purpose of providing necessary 

 oceanographic, hydrologic and charting information for the rivers of South 

 Vietnam. 



Better equipment and techniques to improve data-collection capability 

 and the quality of the data collected will lead to production of more ac- 

 curate combat charts. Plans exist for development of prototype sensors 

 and equipment which can be utilized in the development of automated 

 hydrographic survey systems, and in which advanced techniques and equip- 

 ments will be employed for precise positioning in data acquisition. 



As the rapidity with which data acquisition can be accomplished in- 

 creases, techniques will enable accurate surveys to be made of recreational 

 areas, such as small boat marinas, which will increase the safety and equip- 

 ment of this rapidly growing activity. 



HYDROGRAPHIC SURVEYING AND CHARTING (HYSURCH) 



Development of a Hydrographic Surveying and Charting (HYSURCH) 

 system has been initiated to support fleet needs for rapid production of 

 hydrographic data in coastal areas during amphibious and mine warfare op- 

 erations. Design of the HYSURCH system will be based on a shipboard 

 command/control concept for rapid hydrographic and topographic (coastal) 

 data acquisition, correlation, compilation, reproduction, and dissemina- 

 tion. It is anticipated that the HYSURCH system will be composed of an 

 aerial survey subsystem, a hydrographic survey subsystem, and a shipboard 

 cartographic compilation and reproduction subsystem. The prototype 



