INS Arighaat

Strategic Priority Program

Indian Navy › Procurement

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 To Strengthen India's Nuclear Triad As The Third Arihant-Class Submarine Set To Join Indian Navy's Fleet - Swarajyamag

news.google.com · 19 Feb 2026

What is INS Aridhaman? India set to welcome third nuclear-powered ballistic missile Arihant-class submarine - Livemint

news.google.com · 03 Apr 2026

India Successfully Tests K 4 Submarine Launched Ballistic Missile from INS Arighaat Strengthening Nuclear Triad - LawStreet Journal

news.google.com · 26 Dec 2025

India Successfully Tests K-4 Ballistic Missile from INS Arighaat Submarine - Defense Feeds

news.google.com · 26 Dec 2025

S4 sailing in deep water, the evolution of India’s strategic Arihant-class submarine force - Organiser

news.google.com · 31 Dec 2025

PROGRAM BRIEF & FREQUENTLY ASKED QUESTIONS

Essential facts about INS Arighaat

Pipeline Status

Stage 7/7

Commissioned

Estimated Budget

Classified

Financial Outlay

Target Timeline

2024

Operational Target

Armed Service

Indian Navy

85% Indigenous

What is the current status and stage of INS Arighaat?▾

INS Arighaat — Arihant-Class SSBN is currently at Stage 7 of 7 in the Indian defence procurement procedure (Commissioned). Second Arihant-class nuclear-powered ballistic missile submarine commissioned in 2024

What is the estimated budget or outlay for INS Arighaat?▾

The allocated budget outlay for INS Arighaat is estimated at Classified.

When is INS Arighaat expected to be inducted or deployed?▾

The program schedule indicates 2024.

Which agencies and companies are building INS Arighaat?▾

INS Arighaat is developed in coordination with vendors: Ship Building Centre Visakhapatnam, DRDO, BARC, Indian Navy.

What is the indigenisation level of INS Arighaat?▾

INS Arighaat targets an indigenous content of 85%, advancing domestic defence manufacturing under Atmanirbhar Bharat.

CONTENDERS / VENDORS

Ship Building Centre Visakhapatnam · DRDO · BARC · Indian Navy

LATEST UPDATES

No updates published yet.