As many others, i have always been facinated by U-boats.
But the sim part was when i tried SH1.
Back then the graphics was stunning

anyways:
Being able to lurk around those huge areas feeling completely alone was totally different from other games i had played.
But the thing that really got me hooked was when i got my first successful hit with a torpedo. NO game beats that feeling!

well, that's pretty much my experience regarding U-boats, nd now im trying to figure out the SH3 gameplay