necrosis). The possibility of ear function damage is also under 

 investigation. 



"Hard-hat" diving gear, although heavy and cumbersome, offers 

 the diver an unlimited air supply, thus permitting him to perform 

 arduous underwater work for relatively long periods of time. The 

 Navy is currently developing a new "hard-hat" helmet and suit that 

 is lighter and safer than those presently in use. This diver outfit will 

 be tested in the fall of 1973. 



Submersible Operator Aids 



New control systems and work tools are increasing the 

 capabilities of submersible operators. Operators now have devices 

 to control the machines fastened to the hulls of submersibles without 

 the safety hazard of wires going through the hull. For example, a 

 recently developed electro-magnetic coupling device has 

 transmitted information through a submersible hull. In another 

 experiment, light signals have been coupled through the acrylic hull 

 of the Navy's deep submersible, Makakai, transmitting command 

 and control information to the trim and propulsion system. 



A modular system package is being developed to upgrade the 

 capabilities of the operators of Navy deep submergence vehicles and 

 cable controlled platforms. This system incorporates several work 

 functions consisting of rugged, highly reliable, mechanical hands 

 that move six ways, heavy duty vises, power tools, and a winch 

 system. It will have the capability to manipulate and hold 2,000 

 pound articles. The modular package is being designed for 

 installation on the Navy's CURV, Sea Cliff, DSRV, NR-1, Dolphin, 

 and Trieste, as well as the RUWS. 



Manned Undersea Activities 



As each new concept in undersea technology is proven, its 

 application increases the effectiveness of support for other 

 programs. A major element of this effort is provided by NOAA, 

 which, through its Manned Undersea Science and Technology 

 (MUS&T) Office, continues its role in support of civilian operational 

 capabilities for man to work under the sea in support of programs 

 whose aim is to achieve a better understanding, assessment, and use 

 of the marine environment and its resources. 



Emphasis has been placed on conducting and coordinating 

 ongoing manned undersea scientific research programs and on 

 providing the supporting technology necessary for safe and 

 expeditious fulfillment of such activities. MUS&T maintains a 

 continuing survey and assessment of undersea vehicles and 

 platforms developed by industry and the Navy, and maintains close 

 liaison with the Navy to provide transfer of technology from military 

 to civil applications. MUS&T is also coordinating the use of the 



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