R 260116Z JUL 69 



FM NRL WASHDC 



TO NAVSHIPSYSCOMHQ 



INFO COMSTS 



COMSTSLANT 



USNS MIZAR 



NAVOCEANO 



COMSERVLANT 



CNO 



ONR 



CNM 



NAVXDIVINGU 



WOODS HOLE OCEANOGRAPfflC INSTITUTION WOODS HOLE MASS 



UNCLAS 

 ALVIN SALVOPS 



A. YOUR 221933Z JUL 69 (NOTAL) 



1. REFERENCE A REQUESTS USE OF USNS MIZAR FOR SALVAGING ALVIN. 



2. A PRELIMINARY STUDY OF THIS PROBLEM INDICATES THAT UN- 

 CONTROLLABLE RESONANCES MUST BE EXPECTED AT SHORT LINE LENGTHS 

 AND MAY ALSO BE PRESENT NEAR MAXIMUM DEPTH. 



3. IT IS OUR OPINION THAT USE OF THE EQUIPMENT AND FACILITIES WHICH 

 ARE NOW AVAILABLE FOR THIS PURPOSE INVOLVE UNACCEPTABLE RISKS. 



4. IN ABSENCE OF A COMPLETE STUDY OF DYNAMIC FORCES, RECOMMEND 

 AGAINST EMPLOYMENT OF RECOVERY SYSTEMS CONSIDERED TO DATE. 



5. USNS MIZAR SAILING WILL BE DELAYED UNTIL 30 JULY PENDING RESOLUTION 

 OF THESE UNCERTAINTIES. DELAY BEYOND 30 JULY WILL PRECLUDE MEETING 

 PRESENTLY SCHEDULED NRL COMMITMENTS. 



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