Hi Beast,
Haven't you ever heard of the "Seaview?" Seriously, Microsoft modeled the globe and with it the oceans, albeit with undefined depth below the surface. However, the static nature of the surface still allows watercraft to operate above and below the surface. Lockheed-Martin's Prepar3D takes it a step farther and models the topography below the waves, but I digress. So, I am looking for a usable submarine to "fly" below the surf which will probably need someone who uses FSX/P3D.
If you have any curiosity or questions, I will be glad to help if I can. FYI - one watercraft I have used is a model of the HMS Bounty. Yes, that is a square-rigger sailing vessel which is actually powered by the simulated winds in FSX and it works! There is also a simulated "bubble" sextant which I used for an almost 700nm voyage across open ocean from Corpus Christi, TX to the Florida Keys.
Oh! I really like your signature quote.
