2. Investigate the application of depth regulation and 

 dynamic stress control equipment to various types of mili- 

 tary operations requiring the lowering and deep towing of 

 underwater devices. 



3. Redesign and package the experimental equipment 

 to provide a portable prototype depth regulator capable of 

 being installed on any standard hydrographic winch for ship- 

 board use. Perform tests under rough sea conditions to 

 substantiate the value of depth regulation. 



4. If use of the depth regulator proves successful at 

 sea, install a depth regulator on the dredging winch of the 

 AGOR 5 (USNS DAVIS). This would facilitate the safe han- 

 dling of heavy transducers and of the NEL Type VII Deep 

 Sea Camera and Survey System, and also make it possible 

 through accurate lens-to-target control to obtain a contin- 

 uous stereophotographic record of the sediment -water 

 interface. 



ADMINISTRATIVE INFORMATION 



Work was performed under SR 004 03 01, Task 0539 

 (NEL L4-1) during the period September 1961 to May 1963. 

 The report was approved for publication 27 March 1964. 



The equipment described is covered by U. S. Patent 

 No. 3, 088, 710 dated 7 May 1963, issued to the authors (see 

 Patent Gazette, Vol. 790, No. 1, General and Mechanical, 

 pages 187-188). 



The authors wish to thank E. C. Buffington, E. L. 

 Hamilton, E. C. LaFond, and G. H. Curl for reviewing the 

 manuscript. 



