a. Conducting "ocean- station" operations with ship "lying-to," 

 in oceanic areas, during which a multiple number of instruments 

 and sensors will be lowered to interim or maximum depth. 



b. Conducting deep or shallow ocean-floor dredging with either 

 light or heavy loads. 



c. Conducting "bottom coring" operations. 



d. Conducting "towed operations," at varying speeds, utilizing 

 various oceanographic instruments either singly or in multiple 

 groupings. 



Requirements and Specifications: 



a. To be utilized for underway and stopped ("lying-to") opera- 

 tions. 



b. To perform reliably at slow ship speeds (0-3 knots) under 

 heavy deep-sea dredging loads and at high ship speeds (10-15 knots) 

 under light trawling or towing loads. 



c. Cable Reels: 



(1) Should be designed so as to facilitate rapid removal and 

 change of cable reels. 



(2) The "non-conducting" wire reel should have a capacity 

 equivalent to 40,000 feet of 5/16 inch wire. 



(3) The "conducting" wire reel should be constructed of non- 

 ferromagnetic material to reduce eddy losses and to mininnize noise. 



(4) The "conducting" wire reel shall be capable of providing 

 a number of electrical pick-offs, varying from 1 to 12. 



(5) The "conducting" wire reel shall have a capacity equiva- 

 lent to 40,000 feet of 0.3 inch diameter "conducting" cable. 



d. The design shall incorporate a "winding machine" feature for 

 controlled laying of the cable on the storage reel during in-haul. This 

 feature must be adjustable to accommodate wire and cable sizes 

 varying from 0.1 to 0.9 inch diameter. 



e. There shall be a provision for constant tension control, i. e. , 

 fine control of the load's vertical motion. This constant tension 

 should be *2% or better of the load at any given instant. This 



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