---
title: "K-15 Sagarika SLBM: India's Sea Deterrent | Model Diplomat"
description: "The K-15 Sagarika is India's 750-km submarine-launched ballistic missile aboard INS Arihant, completing the nuclear triad. Range, mechanics, and UPSC relevance."
url: "https://modeldiplomat.com/learn/glossary/k-15-sagarika-slbm"
---

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Model Diplomat Research Team · Last reviewed June 22, 2026

TL;DR

- The K-15 Sagarika is India's short-range submarine-launched ballistic missile, with a roughly 750-kilometre range, deployed aboard the Arihant-class nuclear-powered submarines.
- What is the range of the K-15 Sagarika and why does it matter strategically?
- How does the K-15 differ from the K-4 missile?
- Which submarines carry the K-15 Sagarika?
- How does the K-15 fit into India's nuclear doctrine?

[Civil Service & Diplomatic Exams](https://modeldiplomat.com/learn/civil-services/glossary)Updated June 22, 2026

The K-15 Sagarika is India's short-range submarine-launched ballistic missile, with a roughly 750-kilometre range, deployed aboard the Arihant-class nuclear-powered submarines.

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Prime Minister Narendra Modi announced from New Delhi in November 2018 that INS Arihant, armed with K-15 Sagarika missiles, had completed its first deterrence patrol, operationally completing India's nuclear triad.

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