ABSTPJiCT 



In kccpiii^ with :he general Deep Ccean Tccliiiolo.'^y prc<jram objective 

 of "devolopir.g t?ie broad technological base", jtrLct.ural dc-nirn considera- 

 tions for repl:-.ciug the existing }-!:-103 steel ALVI'J/aUTFX prcosuro sphere 

 vith a titanium sphere are inve.i tigatcd. It is concluvL'.-d th-it an 13,000 

 ft collapse depth and a 2000 poun 1 payload increase l.s attainable utilizing 

 l.ol in thick, 100,000 pji yield strengt); titanj ;;!ri. !Mr.-th''jr cy-llc, creep, 

 land collapse tests of a second fudl scale sp];Oi'i^ is I'eqa.i re-d . 'UiO approxi- 

 irate cost of the structural phase of such a progran is ;"r-).''j9,003. 



