The increased use of electric and electronic sensors makes it 

 necessary to develop improved electrical cable reels. High capacity- 

 drums, better electrical slip-rings, and more slip-rings per winch 

 are desirable features of future designs. 



It is recommended that performance specifications be prepared 

 for several winch and reel designs. 



1. Portable oceanographic winches 



a. A portable oceanographic winch should be designed with two- 

 speed control, a capacity of 15,000 feet of 5/32 inch wire, and a 

 maximum gross weight of 2,500 pounds. 



b. Also required is a portable winch with two- speed control, a 

 capacity of 5,000 feet of 3/32 inch wire, and a maximum gross weight 

 of 1,000 pounds. 



2. Electrical cable reels 



A cable reel is required that has an a.c. electric motor, variable 

 speed control, a capacity of 10,000 feet of 0.4 inch eight- conductor 

 wire, ten slip-rings, and an optimum gross weight of 3,800 pounds. 

 Development of this reel is needed immediately. 



3. Hoists 



A portable BT-type high-speed hoist is needed having a variable 

 speed control, a capacity of 3,000 feet of 0.2 inch three- conductor wire, 

 five slip-rings, and an optimum gross weight of 900 pounds. Develop- 

 ment of this hoist should parallel the work on the smaller cable reel 

 mentioned above. 



XVI- 5 



