Because I see many people making guesses or misinformed about a lot of technical matters regarding the optics in the german UBoats, I have uploaded here a document that covers the scarce info that is available, and which I have been collecting over several years from different sources:
http://www.mediafire.com/?izkokujdowf
Much of this info I have been giving in the SH3/4 mods forum, but it is understandable that many new modders who pour into SH5 as their first step here have no idea what a wealth of info has been acumulated over years on the other forums.
Happy hunting
