If you look at this page Sydney seems to be the nearest location, therefore they U-Boats must be stationed in Penang, right? But why does a IXC only have 140 cbm of fuel left (I mean it's only 2200 miles). So I guess 140cbm is the amount of fuel that can be "wasted" in the operation area, when 140cbm are used it has to return.:hmm: But that's just crappy guesswork.
