The Beautiful Briny SeaDQ reader and Sonalysts, Inc. Producer Jamie Carlson let me know that Valve has put together an unbelievable package of naval simulations, including S.C.S. - Dangerous Waters, for $29.99. Here's what you get:
S.C.S. - Dangerous Waters
That is nothing short of insane. If you're into naval simuations, that's easily 200+ hours of gameplay (or more) for $29.99.
The package is called "The Complete Naval Combat Pack" and here's the link.