Sound inversion

[der Mörderwal]

Hey all... bit of a newb for sub sims but not to sims in general (air combat, racing, etc).
So far, I'm thoroughly enjoying SH3 but I've hit one big issue... my sounds are inverted, sort of.
For example, say I'm in external cam mode, underwater, and am directly facing a vessel. I can't hear it. However, if I rotate 180 deg, I can now hear it perfectly. It makes tracking things by sound extremely difficult, as I'm sure you can imagine.
Has anyone else run into this problem? I've searched the various fora but have come up empty-handed.

And now for potentially stupid question #2... despite having at least 2 submariners in my extended family, I know very little about submarine operational practices and procedures and, earlier this evening as I was on patrol near Scapa Flow, it occurred to me to wonder: did crews go fishing, to supplement their food rations? I mean, some of the spots they toured had/have some awesome fishing and I know that I for one would take fresh meat over stale wurst any day.

Anyhow, thanks in advance.