Additional requirements for part-time oceanographic operations in 

 deep water brought forth the design of a portable oceanographic survey 

 winch. Six of these winches, designated WOE 7.5, were manufactured 

 by the Western Gear Corporation of Seattle, Washington for this Office. 

 Each winch is mounted on a prefabricated bedplate that has an attached 

 working boom to simplify the installation. The power requirement 

 is 230 volts d.c., and a portable generator may be used if power is 

 lacking in the field. This winch has a designed capacity of 8,000 feet 

 of 5/32 inch wire rope and can lift a 1,000 pound load at an average 

 speed of 225 feet per minute. By overloading the drum, the capacity 

 can be increased to 14,000 feet of 5/32 inch wire rope. 



D. ELECTRICAL CABLE REELS 



Originally, the primary requirements for electrical slip-rings, 

 or other methods of electrical continuity through a winch, were those 

 dictated by the Roberts current meter design. Both the USS REHOBOTH 

 and USS SAN PABLO were outfitted fore and aft with hydrophone 

 winches manufactured by the Silent Hoist and Crane Company of 

 Brooklyn, New York. Both installations are electrically powered with 

 440- volt, 3- phase a.c. current and are two- speed, reversible winches 

 capable of handling 3,000 feet of .310 electrical cable. The cable used 

 is US Steel type 3H1 and contains three electrical conductors; the 

 conductors are not insulated. Each winch has three slip- ring conduc- 

 tors that provide electrical continuity from sensor to recorder. These 

 winches are slow and electrically very noisy and require constant 

 maintenance because of their age. 



With the advent of the electronic bathythermograph, sound velocity 

 meter, and sensitive current measuring instrumentation, specific 

 design requirements for a more efficient oceanographic winch were 

 formulated. The series-600 electrical cable reel was manufactured to 

 these requirements by the Commercial Engineering Corporation of 

 Houston, Texas and received by this Office in December 1959. 



The series-600 electrical cable reel is designed for a maximum 

 capacity of 8,000 feet of .310 six- conductor, electrical cable or 12,000 

 feet of .190 six-conductor electrical cable and has six slip-rings 

 integral with the drum shaft. By a combination of multiple brakes, a 

 differential gearing system, and an air- coupling energy absorber, all 

 controlled by a single lever, the operator has the selection of any 

 speed from zero to a maximum of 350 feet per minute. All motor 

 controllers are housed within the frame, and the reel is engineered 

 for quick (20 minutes) changing of drums. The gross weight of the unit 



XVI- 3 



