INS Arighaat — Arihant-Class SSBN

APPROVED

Second Arihant-class nuclear-powered ballistic missile submarine commissioned in 2024

Budget

Classified

Timeline

2024

Sector

Indian Navy

Indigenisation

85%

PROCUREMENT TIMELINE

AON

Acceptance of Necessity — CCS/DAC approves the requirement.

RFI

Request for Information — industry capability survey.

RFP

Request for Proposal — detailed tender issued to vendors.

ToC

Transfer of Technology clause negotiations.

CNC

Contract Negotiation Committee finalises terms.

Contract

Contract signed with selected vendor(s).

Dev/Trial

Development, integration and user trials.

Induction

CURRENT

Equipment inducted into service.

INTEL SIGNALS

Budget classified — strategic program

Strategic priority designation

PIB/Wikipedia record INS Arighaat as the second Arihant-class SSBN, commissioned at Visakhapatnam on 29 Aug 2024 in the presence of the Raksha Mantri. Treat as inducted strategic-deterrent capability; technical payload details remain sensitive and should not be over-specified beyond open-source reporting.

RECENT INTELLIGENCE

INS Aridhaman Induction Explained: India’s Nuclear Triad Gets Boost

indianexpress.com · 03 Apr 2026

INS Arighaat is significantly more technologically advanced than INS Arihant, as its construction involved advanced design and manufacturing technology, detaile

Arihant class nuclear-powered submarine S4* likely to be named INS Arisudan | India News

hindustantimes.com · 05 Jan 2026

Smart Money Sports SimplyPut Delhi News Bengaluru News Mumbai News Technology Quickreads Daily Digest Following Photos Games + 3 more + Following + Photos + Gam

What is INS Aridhaman? India set to welcome third nuclear ...

livemint.com · 03 Apr 2026

Future classes of Indian SSBNs are expected to have a displacement of 6,000 tons, double that of the Arihant class, and will carry nuclear missiles

CONTENDERS / VENDORS

Ship Building Centre Visakhapatnam · DRDO · BARC · Indian Navy

LATEST UPDATES

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