•oei;:-<;ral 



So;r,e of Lhe more obvious :i6.-j ant v. '~-z-s cf repl.-Lciiiij the iT-xi.iMng } 



HY-ICO sphere vith a Titaniiur, sphere arc:- 



.1. Incro-iSod pay],oad for ALVIU for uresonb oporaLir,,';; deptli of 

 6000 fl. 



2. Ability to double the ezistin;^ opcratin;; depth yet still 

 increase p'-yload over present system. 



3. Opportunity to evaluate a large titcnjujp. structure in the 

 deep ocean environment. 



^. Opportunity to provide a "fir3t-£;'jn',-ration'' test bed vniiicle 

 for -pjossible D.O.T. applications. 



5. Opportunity to provide DSSP v;ith a first look at a ir.annod 

 Titanium strucUirG in tl:e enA'iror^r.ent, for possible DS3V 



applications, 



,1 



6. Opportun:ty to systerr.atically develop an" evaluate the 



techniques/riethGdologies for certifying a category 2 or 3 

 icaterial for deep subTiergence applications. 

 In order to exploit all of the possible advantages accruing frcn 

 the replacement of the existing !iY-100 sphere vith a titaniun sphere, two 

 major structural clvange/alterations wove consj.dered 'lesira^ile:- 



. increased hull thickness from existing 1.33 in to approximately 



1.75 in. 

 . increased forv/ard viev/ing capacity - to permit the scientist/ 

 observer as veil as the pilot to see forward. 



J 



