One real simulation i know of.

User Rating: 8.5 | Silent Hunter: Wolves of the Pacific PC
i have played this game's first version in the MS-DOS. Silent hunter 2 was very good that you could feel the real tension of the WWII submarine experience. the coordination and fighting is darn too realistic that it requires some experience and knowledge to actually lead you to some success. especially with manually configured torpedo launching. look and sound biut boring for some gamers but once you have played it and understood the core purpose you'll stuck with it. each new installment become much more realistic and much more graphical improvements. i bet this edition is going to be like actually watching WWII movie in your PC.