Germany ready to sign $8bn submarine deal with India: Envoy
Germany has indicated readiness to conclude an estimated $8 billion (around ₹70,000 crore) submarine construction deal with India under Project-75I (P-75I).
The deal envisages six conventional (diesel-electric) submarines fitted with Air Independent Propulsion (AIP), to be built in India through a partnership between an Indian shipyard and a German submarine designer.
The programme falls under India's Strategic Partnership (SP) model of defence procurement, which mandates technology transfer and progressive indigenisation across the six hulls.
The agreement is expected to be finalised following further government-level engagement between the two countries.
Project-75I and the Strategic Partnership (SP) Model
Project-75I is the follow-on programme to Project-75 (the Scorpene-class Kalvari-series submarines), aimed at inducting six new conventional submarines with AIP for the Indian Navy. It is being executed under the Strategic Partnership model, a category of capital acquisition introduced to build long-term indigenous defence manufacturing capacity in critical segments (submarines, fighter aircraft, helicopters, armoured vehicles) by pairing a foreign Original Equipment Manufacturer (OEM) with an Indian Strategic Partner shipyard/company for technology transfer and domestic production.
Key Details
- The Strategic Partnership model was formally introduced as Chapter VII of the Defence Procurement Procedure (DPP) 2016, and carried forward into the Defence Acquisition Procedure (DAP) 2020.
- Under P-75I, the identified Indian shipyard partners with a foreign submarine OEM for technology transfer and local construction, with indigenous content designed to rise progressively across the six submarines built.
- Air Independent Propulsion (AIP) allows a conventional (diesel-electric) submarine to remain submerged for much longer than standard diesel-electric propulsion, without surfacing to run diesel generators, narrowing the endurance gap with nuclear-powered submarines.
- P-75I is distinct from Project-75, under which six Scorpene-class (Kalvari-class) submarines were built with French collaboration and inducted into the Navy.
The reported deal operationalises the P-75I programme's Strategic Partnership model, with a foreign OEM providing submarine design and technology transfer for construction in an Indian shipyard — the acquisition pathway UPSC tests as an example of "Make in India" applied to complex defence platforms.
India's Conventional Submarine Arm and Fleet Modernisation
India operates a mixed submarine fleet of conventional (diesel-electric) attack submarines and nuclear-powered vessels. Conventional submarines form the bulk of underwater combat capability and are approaching block obsolescence, which is the strategic rationale behind P-75I.
Key Details
- India's conventional submarine fleet includes Kalvari-class (Scorpene-design, Project-75) and older Sindhughosh-class (Kilo-class, Russian-origin) submarines, several of which are more than three decades old.
- Nuclear-powered submarines (the SSBN Arihant-class for strategic deterrence, and SSNs) are separate from conventional attack submarines and are developed indigenously under different programmes; P-75I does not concern nuclear propulsion.
- Submarine acquisition and construction fall under the Ministry of Defence's capital acquisition process, cleared successively by the Defence Acquisition Council (DAC) and the Cabinet Committee on Security (CCS).
The P-75I submarines are intended to replace ageing conventional boats and sustain force levels while India's indigenous submarine-building ecosystem matures.
India-Germany Defence and Strategic Cooperation
India and Germany have an institutionalised bilateral framework for defence and strategic cooperation, of which large-ticket defence-industrial deals such as P-75I would be a part.
Key Details
- The India-Germany Agreement on Bilateral Defence Cooperation dates to 2006, providing the umbrella framework for defence exchanges between the two countries.
- India and Germany hold biennial Inter-Governmental Consultations (IGC) at the head-of-government level, launched in 2011, covering trade, technology and security cooperation; both countries have also concluded an arrangement enabling exchange of classified information for defence cooperation.
- Germany is one of the sources of foreign direct investment and technology partnerships for India's defence-industrial base, alongside France, Russia and the United States, as India diversifies its defence-supplier base under its indigenisation push.
A submarine deal of this scale would be among the largest instances of India-Germany defence-industrial collaboration, reflecting the deepening of the bilateral strategic partnership beyond the existing IGC framework.
- Estimated deal value: about $8 billion (reported as approximately ₹70,000 crore)
- Number of submarines: six, under Project-75I
- Propulsion: diesel-electric with Air Independent Propulsion (AIP)
- Strategic Partnership model introduced: DPP 2016 (Chapter VII), carried into DAP 2020
- Project-75 (prior programme): six Scorpene-class (Kalvari-class) submarines, French collaboration
- India-Germany Defence Cooperation Agreement: 2006; Inter-Governmental Consultations launched 2011