The main view presents submarine instruments, tactical displays, and contact information rather than a conventional action scene. The player searches for ships and submarines with sonar, manages depth and speed, identifies contacts, and chooses suitable weapons while attempting to remain undetected.

Missions take place within a larger campaign whose outcome can change as naval forces succeed or fail. Players can use torpedoes, cruise missiles, and other submarine systems when available, while navigation, acoustic discipline, damage control, and crew effectiveness affect survival and mission results.

Use passive sonar whenever possible and avoid unnecessary speed, since noise makes the submarine easier to detect. Confirm a contact’s identity before firing, and consider the target’s course, range, and bearing rather than launching immediately.

Plan escape routes before attacking. After firing, change depth or heading, reduce noise, and prepare to evade return weapons. Conserve limited missiles and torpedoes for targets that materially affect the mission or campaign.