CONCLUSIONS 



1. Commercial hydraulic rigging and load handling equipment suit- 

 able for underwater use is limited to hydraulic ram and cylinders. These 

 are relatively inexpensive due to their simplicity and wide-spread sur- 

 face use. There is no commercially available open center hydraulic load 

 handling equipment that is light enough for divers to move underwater. 

 New innovative hydraulic powered load handling equipment including "dis- 

 posable" winches with hydraulic power handles and hydraulic powered 

 chain pulling equipment are required for underwater salvage. 



2. Hydraulic -actuated cutting equipment suitable for underwater 

 operation is available for cutting wire rope to 1 1/8 inch diameter and 

 for steel bars to about 3/4 inch diameter. Additional open center cut- 

 ting tools are required. Presently a cable cutter is available but 

 needs improvement to perform satisfactorily. There is no diver operable 

 hydraulic equipment commercially available for cutting flat steel plate. 



3. Diver powered hydraulic pumps can be used to supply up to 5 

 cubic inches per minute of 4000 psig hydraulic fluid for periods up to 

 20 minutes. The diver powered pump systems are relatively inexpensive, 

 do not require surface support and can be moved underwater by the divers. 



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