Where do you think the XXI exhaust is?

[Wolfehunter]

Ok If looked at some websites and found a various photos of XXI. Its hard to find where they have an exhaust port.

Racerboy asked me where was the exhaust port on the XXI model. So I look around and tried to find the most detail photos that might help him.
I originally posted some links and ideas to Racerboy.

So if any of you have any theories or knowledge where those ports are please post it here. Lets help Racerboy put out another amazing mod to the collection.

http://www.ipmsstockholm.org/magazin..._uboot_xxi.htm
This site has the best details pics for XXI electroboat.


http://news.webshots.com/album/29971249IpTqhIHOVO

http://news.webshots.com/photo/10299...1453yDYCvMdAry

http://news.webshots.com/photo/10941...33241453YUaJGb

http://news.webshots.com/photo/10940...33241453DVKXIt

http://image09.webshots.com/9/1/62/2...8zuDXys_ph.jpg

I think they used the snorkel as a chimney even when it wasn't submerged. But I'm
probably wrong. My second guess was some of them had that odd hole in the rear lower conningtower that could be used as an exhaust? But not all XXI pics showed that odd hole.:hmm:

What do you think or know?