sensor, which is yet to be determined. Cable handling devices, 

 recorders, and transmission processing equipment all must allow 

 for this contingency. 



6. Sea surface temperature sensor: 



This system must be capable of determining the water tem- 

 perature immediately at the air-sea interface. 



7. General design criteria: 



a. Portability - This system must be so designed and con- 

 structed as to pernnit rapid, economiical removal from one ship and 

 relocation on another ship; need for such a transfer may arise, for 

 example, when a ship comnnences yard overhaul. No drydock time 

 shall be required to effect the relocation of this system. 



b. All-weather capability - It is required that this systemi 

 be so designed, constructed, and installed as to permit satisfactory 

 operation, without risk to operating personnel, in sea states through 

 6 (wave heights to 20 feet).' 



c. A future requirement of this system will be, perhaps with 

 certain modifications, that it be capable of operation aboard ships 

 underway at speeds as high as 15 to 20 knots. 



d. Ship types - Inasmuch as it is planned that this system be 

 installed principally on board ships, the following characteristics 

 are considered representative of the smallest and largest ship 

 types on which it is expected this system will be utilized: Displace- 

 ment, 1, 200 tons to 4, 000 tons; length , 209 feet to 440 feet; beam , 



33 feet to 57 feet; draft , 15 feet to 27 feet; freeboard, 10 feet to 

 30 feet. 



Potential Users and Estimated Number of Units Which They May 

 Require : 



a. U. S. Coast Guard - 21 



b. U. 5. Navy - 45 



c. Bureau of Commercial Fisheries - Needs unknown 



d. U. S. Coast and Geodetic Survey - Needs unknown 



e. Scientific Community - Needs unknown 



Total: 66 (approximately) 



411 



