Is there an exhaust mod?

[Paajtor]

Originally Posted by privateer

This detail shows exhaust exiting on port and starboard sides.
http://www.uboatarchive.net/U-570Plate16.htm

And the stock skins have those openings painted in place.

Then will it also be possible, to show exhaust-smoke from only 1 running engine (ie, when you're lying stationary, in recharge-mode)?

Which diesel would run in recharge-mode anyway? Did they have the choice between either one of the 2, or would the gears only allow 1 particular engine?