ABSTRACT 



This report describes a system for sensing, processing, and 

 recording sound velocity, sea water temperature, wave 

 iieiglits, ambient light, date, time, transducer depth, and 

 certain ship motions. The system is digital and is designed 

 principally for use aboard submarines. The output is 

 punched paper tape for computer entry and all variables 

 are displayed and recorded in their absolute units. The 

 system, in a slightlV-modifLeiiotmJsjTOWjn use^board 



the USS r 

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