Depth (two inter- 

 changeable modules) 



Accuracy : ±1 foot/sec absolute 



at readout 

 Range: to 600 feet 



to Z, 000 feet 

 Accuracy: ± 0. 25% of full scale 



Sensor Time Response: Ail sensors, except depth, should have a 

 95% response to a step function in a period of 1 second. The depth 

 sensor should have a 95% response to a step function of 1 fathom 

 (6 feet) in a period of 1 second. 



e. Data Recording and Readout : 



Temperature, salinity, sound velocity, and depth data shall 

 be transmitted from the sensors into the Master Shipboard Data 

 Logging and Processing System. 



f. This platform should be able to be rigged from and towed 

 by the Multi-purpose, Constant Tension, Heavy Duty Oceano- 

 graphic Winch where it is available. 



g. If this unit can be mass-produced cheaply, it may have 

 widespread commerciai fishing application. 



Potential Users and Estimated Number of Units Which They May 

 Require: 



a. U. S. Navy (basic research, applied research, and oceano- 

 graphic survey ships ) - 20 to 30. 



b. U. S. Coast and Geodetic Survey vessels - 10 to 15' 



c. Bureau of Commercial Fisheries vessels - 2 to 20- 



d. Certain activities within the scientific community - 10 to 20- 



Total: 42 to 85. 



Recommendation Where Equipment Should Be Researched and 

 Developed: 



U. S. Industry. 



399 



