5 Facts About India’s Latest Submarine — INS Kalvari

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The INS Kalvari, India's first conventional submarine in 15 years will soon take its place patrolling under India's seas and will be the first in India's new Kalvari Class Scorpene submarines.

So let's take a look at the INS Kalvari and uncover a few facts about India's latest undersea protector and see what makes it such an important part of India's defence.

First Conventional Sub In 15 Years

The Kalvari is India's first conventional submarine in 15 years. ‘Conventional' refers to the diesel-electric powertrain. The Kalvari uses a a diesel engine which acts as a generator to drive an electric motor which in turn, turns the propellers.

Image Source: Wikimedia Commons

Ready To Fight

The INS Kalvari is expected to join the Indian Navy in September and is 67-metres long and 6.2-metres wide and displaces 1500 tons. The Kalvari carries torpedoes and missiles which it can use to bring down enemy ships.

Image Source - Wikimedia Commons


The Kalvari is stealthier than nuclear subs as it can work without needing to surface or send up a snorkel for oxygen thanks to the use of Air-independent propulsion system found on the Scorpene subs that can help it stay underwater for up to 21 days at a stretch.

The system acts as a battery that runs the sub when it is submerged which in turns keeps down the noise the sub creates underwater. The diesel engines usually work while the sub is on the surface.

Image Source - Wikimedia Commons

The Kalvari Class

It is the first of India's six French made Scorpene submarines which will be known as the Kalvari class. Each Kalvari-class submarine will cost India $500 Million.

Image Source - Wikimedia Commons

The Rebirth Of The Kalvari Name

The name Kalvari is taken from a deep sea tiger shark and is a revival of the name of India's first ever submarine,the INS Kalvari which was built by the Soviet Union in Leningrad (now St. Petersburg) in 1967.

The INS Kalvari was commissioned into the Indian Navy on 8 December 1967 and served the navy till it was decommissioned on 31 May, 1996.

Image Source - Wikimedia Commons

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