Dangerous Waters is an in-depth simulation of modern submarine and anti-submarine warfare (ASW), with a particular emphasis on realism. As the direct successor of Sub Command, the game entitles the player to command the most advanced nuclear submarines in operation: the American SSN-21 Seawolf-class and 688i Los Angeles-class, as well as the Russian AKULA-I IMPROVED and AKULA-II. Additionally, the player will be able to take control of the variants (Projects 636 and 877) of the KILO-class diesel-electric attack submarine; a ship which lacks the endurance, speed, and power of its nuclear counterparts, however is particularly quiet when running slowly and deadly in shallow waters.