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 feature 
should be readily removable or by-passed when not required. A cable 
load indicator must also be included. 
f. It shall incorporate controlled torque for shockless stopping 
and starting. 
g.- It shall be capable of ascent-descent rates of up to 150 meters/ 
minute. 
he The operating depth range of this equipment shall be O to 6,500 
fathoms (0 to 39,000 feet.) 
i. It shall be capable of performing with an in-haul dynamic load 
of 8,000 lbs, and of withstanding a "break-load" of 20,000 lbs. 
je It shall include an emergency retrieval system. 
k. Although the largest and the highest priority winch is described 
here, it should be the basis of a series of standard-type, varying-sized 
winches. 
Potential Users and Estimated Number of Units Which They May Requires 
ae U. S. Navy (basic research, applied research, and oceanographic 
survey ships) - 15 to 30 
b. U. S.- Coast and Geodetic Survey - 6 to 15 
c. Certain activities within the scientific community - 10 to 20 
d- Bureau of Commercial Fisheries - 2 
Total: 33 to 67 
Recommendation Where Instrument Should Be Researched and Developed: 
U. S. Industry. 
Relative Importance to U. S. National Oceanographic Program: 
Individual instrument/equipment priority 4. 
10 
