(4) Oxygen 



(5) Depth (four inter- 

 changeable modules) 



Range: to 10 milliliter/ 



liter 

 Accuracy: ±0.1 milliliter/ 



liter 

 Range : to 600 feet 



to 6, 000 feet 

 to 15, 000 feet 

 to 39, 000 feet 

 Accuracy : ±0.25% of full 

 range for each 

 module 



g. The sensor time responses desired are: 



(1) Temperature: 95% response to a step function of 0.02 C. in 1 sec- 

 ond. 



(2) Salinity: 95% response to a step function of O.Ql%o in 1 second. 



(3) Sound velocity: 95% response to a step function of 1.0 foot per 

 second in 1 second. 



(4) Oxygen: 95% response to a step function of 0. 1 milliliter per liter 

 in 1 second. 



(5) Depth: 95% response to a step function of 1 fathom (6 feet) in 1 

 second. 



h. Recording : 



(1) Within the instrument, there shall be continuous analog 

 recording of all five variables simultaneously on magnetic tape. 



(2) On deck, after the instrument has been retrieved, this 

 data must be capable of immediate, direct input into the Master 

 Shipboard Data Logging and Processing System. 



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 40. 



b. U. S. Coast and Geodetic Survey - 10 to 200. 



c. Certain activities within scientific community - 10 to 20. 



d. Bureau of Commercial Fisheries - 30 to 100. 



376 



