This campaign offers a high-difficulty experience set against a backdrop of Chinese economic crisis and territorial expansion.

: A new feature allowing players to quickly set up combat engagements with custom parameters in either the North Atlantic or South China Sea.

: Unlike the deep North Atlantic, this theater focuses on combat in shallow waters, making stealth and navigation much more challenging.

: The scenario involves China making moves on Hong Kong, Taiwan, and the Spratly Islands, supported by advanced Russian equipment and crews.

: A modernized interface with tooltips to assist in commanding the submarine.

: Added playable Soviet-era vessels such as the Charlie 1 , Alpha , and November classes, along with the People's Liberation Army Navy ( PLAN ) Han class submarines.

The v1.15c update introduced several major mechanics and content additions: