In a move to enhance its sea-based nuclear deterrence and counter the growing naval presence of China in the Indian Ocean region, India has quietly launched its fourth nuclear-powered submarine, S4*. This development comes amid diplomatic tension with Canada and the recent inauguration of a low-cost naval base in Telangana. With its 75% indigenous components and range of 3,500 km, the S4* joins the INS Arihant and INS Arighat in boosting India's strategic command and control communication capabilities. Plans are also underway for the development of more advanced submarines to further solidify India's dominance in the Indo-Pacific region.