T = 24 hr 

 a = 90° 

 T°= 35OF 

 S.F, = 1 



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 O-^ Fixed boundary 



Q- — Free boundary 



Q Actual designs 

 (see table 3) 



1 



0.4 



1.6 



0.8 1.2 



Thickness/Minor Diameter Ratio, t/d 

 Figure 17. Comparison of analytical results and operational designs. 



Table 3. Submersible Viewport Designs in Figure 17 



(Extract from Reference 2.) 



Identification Number 



Submersible Name 



Operating Depth (ft) 



1 



ALUMINAUT 



15,000 



2 



ALVIN 



6,000 



3 



ASHERAH 



600 



4 



BEN FRANKLIN 



2,000 



5 



DEEP JEEP 



2,000 



6 



DEEP QUEST 



8,000 



7 



DEEPSTAR 2000 



2,000 



8 



DEEPSTAR4000 



4,000 



9 



DIVING SAUCER 



1,000 



10 



DOWB 



6,500 



11 



DSRV 



5,000 



12 



PAULO 1 



600 



13 



PISCES IV 



6,500 



14 



ROUGHNECK 



2,000 



15 



SEACLIFF 



6,500 



16 



STAR III 



2,000 



17 



SURV 



1,000 



18 



TURTLE 



6,500 



26 



