India is set to significantly enhance its underwater warfare capabilities through the proposed “Project 75 Additional” program, which involves the acquisition of three more Scorpene-class submarines. The initiative is expected to deliver faster execution, greater indigenization, and substantial industrial benefits. With commercial negotiations between Mazagon Dock Shipbuilders Limited (MDL) and the government reportedly concluded in early 2025, a final decision is anticipated by the end of March 2026, potentially enabling one of the fastest submarine build timelines in recent years.
A major advantage of the proposal lies in its speed of execution. According to Naval Group Executive Vice President Eric Balufin, these submarines can enter production soon after contract signing, unlike new designs that require extended development and fresh investments. This is made possible by leveraging the established production ecosystem, mature design, and supply chain developed under the earlier six submarines of Project 75. As a result, India can bypass typical delays associated with greenfield submarine programs and utilize MDL’s proven manufacturing line.
Valued at around ₹36,000 crore, the project represents both quantitative and qualitative advancement. The new submarines are expected to be slightly larger and feature higher indigenous content—up to 60%—supporting India’s push for defense self-reliance while boosting domestic industry participation and reducing reliance on foreign suppliers.
A key technological upgrade is the integration of the DRDO-developed Air Independent Propulsion (AIP) system, which allows conventional submarines to remain submerged for extended periods without surfacing. This capability significantly enhances stealth, endurance, and operational flexibility, particularly in contested maritime environments like the Indian Ocean Region.
Beyond operational gains, the program carries long-term industrial potential. Eric Balufin has suggested that India could emerge as a regional Maintenance, Repair, and Overhaul (MRO) hub for Scorpene-class submarines. With multiple Indo-Pacific nations operating or considering these platforms, India could position itself as a key support center, strengthening defense diplomacy while generating economic returns and integrating into global naval supply chains.
Strategically, Project 75 Additional also serves as a critical interim solution. As the more advanced Project-75 India (P75I) program—focused on six next-generation stealth submarines—continues through a complex selection process, this initiative ensures the Indian Navy maintains force levels and operational readiness without facing a capability gap.
