Kilo class submarine INS Sindhudhvaj decommissioned
- Category
Science & Technology
- Published
22nd Jul, 2022
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Context
The Navy’s Kilo-class submarine, INS Sindhudhvaj, has been decommissioned at Visakhapatnam after 35 years in service.
About
About INS Sindhudhvaj
- Commissioned into the Navy in June
- It was one of the 10 Kilo-class submarines India acquired from Russia between the year 1986 and 2000.
- The submarine crest depicts a grey colour nurse shark and the name means flag bearer at sea.
- Sindhudhvaj was the flag bearer of indigenisation and Indian Navy’s efforts towards achieving Atmanirbharat in the Russian built ‘Sindhughosh’ class submarines.
- It was the only submarine to be awarded the Chief of Naval Staff (CNS) rolling trophy for Innovation by Prime Minister.
- Key-features:
- The submarines have a displacement of 3,000
- It has a maximum diving depth of 300 meters, top speed of 18 knots, and they are able to operate solo for 45 days with a crew of 53.
- It has anti-ship cruise missiles with a range of 220 km.
- After the decommissioning of Sindhudhvaj, Indian Navy now has 15 conventional submarines in service.

What are kilo-class submarines?
- Kilo is a class of diesel-electric attack submarines originally designed in the 1970s and built in the Soviet Union for the Soviet Navy.
Operations Credited to Sindhudhvaj
- Operationalization of Indigenised sonar USHUS
- Indigenised Satellite Communication systems Rukmani and MSS
- Inertial Navigation System
- Indigenised Torpedo Fire Control System

Sindhughosh class Submarines in India Navy
- Sindhughosh-class submarines are Kilo-class diesel-electric submarines in active service with the Indian Navy.
- Their names are mainly in Sanskrit.
- The Sindhughosh submarines, were designed as part of Project 877, and built under a contract between Rosvooruzhenie (Russian firm) and the Ministry of Defence (India).
Some Submarines under Sindhughosh are;
- INS Sindhudhvaj
- INS Sindhuratna
- INS Sindhukesari
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