-i^TCF 



•^^.-'^ 



what misleading in this respect because the 

 two observers are young boys. Figure 9.24 is 

 a more realistic portrayal with a full-sized 

 adult in a similar-sized hull. 



The 6,500-foot depth DOWB abandoned 

 viewports completely and went to an optical 

 viewing system instead. The system con- 



sisted of two optical domes containing 180- 

 degree wide-angle lens assemblies mounted 

 top and bottom on the vehicle. Light gath- 

 ered by the domes was transmitted through 

 the hull into an optical relay tube and into a 

 central optical assembly where it was formed 

 into separate images for each observer. It 



459 



