Dangerous Waters is a naval combat simulator, developed by Sonalysts Combat Simulations in 2005. Although there is a significant focus on submarines, there is also the ability to control aircraft (the P-3 Orion ASW aircraft) and a surface vessel (Oliver Hazard Perry class FFG).
The game includes a campaign concerning a russian rebellion as well as a variety of individual missions. Additionally, a mission editor allows creating custom missions, as well as support for importing missions from the previous games: 688(I) Hunter/Killer, Sub Command, and Fleet Command.