Diving Duck!
I must say I am enjoying your new mod very much! Personally I find it to be far more immersive; the extra provisions give things a far more 'cramped' feel to the interior and also gives the impression of continually changing patrol conditions as the provisions/food disappear.
I just noticed a little bug last night though, very minor but just thought i'd point it out. When 50% of the fuel is used up (and food too), there is a floating box of oranges under the table behind the radio operator in the radio room. It's hard to spot, but it's there. It looks like the orange boxes under the top one were used up, and only the top remains so it looks as though it is floating.
Again, great mod DD! It's a great new addition to the sim!