P77 SSN
Indian Navy › Procurement
Planned indigenous SSN class for Indian Navy under long-horizon force development
Budget
Classified / programme estimate undisclosed
Timeline
2024–2040+
Sector
Indian Navy
Indigenisation
PROCUREMENT TIMELINE
AON
AON
CURRENTAcceptance of Necessity — CCS/DAC approves the requirement.
RFI
RFI
RFP
RFP
ToC
ToC
CNC
CNC
Contract
Contract
Dev/Trial
Dev/Trial
Induction
Induction
INTEL SIGNALS
Budget classified — strategic program
Strategic priority designation
Open reporting indicates the CCS approved construction of the first 2 SSNs under Project 77 in October 2024, with a broader long-term SSN force plan beyond the initial tranche. Detailed technical and contractual breakdowns remain limited in public domain disclosures, so this entry remains conservative on timelines and subsystem specifics.
RECENT INTELLIGENCE
news.google.com · 31 Dec 2025
PROGRAM BRIEF & FREQUENTLY ASKED QUESTIONS
Pipeline Status
Stage 0/7
2 SSN Approved (CCS)
Estimated Budget
Classified / programme estimate undisclosed
Financial Outlay
Target Timeline
2024–2040+
Operational Target
Armed Service
Indian Navy
70% Indigenous
Project 77 — Nuclear Attack Submarine (SSN) is currently at Stage 0 of 7 in the Indian defence procurement procedure (2 SSN Approved (CCS)). Planned indigenous SSN class for Indian Navy under long-horizon force development
The allocated budget outlay for P77 SSN is estimated at Classified / programme estimate undisclosed.
The program schedule indicates 2024–2040+.
P77 SSN is developed in coordination with vendors: Indian Navy, Ship Building Centre (Vizag), L&T.
P77 SSN targets an indigenous content of 70%, advancing domestic defence manufacturing under Atmanirbhar Bharat.
CONTENDERS / VENDORS
Indian Navy · Ship Building Centre (Vizag) · L&T
LATEST UPDATES
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