Didn't mean to offend..
I just think a sim is only as good as the AI. Escort AI is lacking somewhat. Then never do a ASDIC sweep after losing contact. Which is a major oversight.
Also, compressed air and damaged systems still work unless destroyed. I have no problems surfacing or changing depth even when bowplanes are damaged, or not working, or if compressed air is depleted.....Bold also works even if launcher is destroyed.
I should think these should have been addressed before release.