mrbeast is absolutely correct. Glass in the conning towers of Fleet boats was removed or otherwise "obstructed", mostly removed. It simply was too weak to withstand both deep dives and imploding from DC attacks...
A bit of trivia: The rationale for having glass in the first place was simple, US Fleet boats were not seen as front line combatants initially. Mostly the USN saw them in support roles and intelligence. Amongst the other things that were changed were "cut down" sheer waters and removal of extra metal.
|