INS Kalvari-Scorpene Submarine,Indian Navy

INS Kalvari-Scorpene Submarine,Indian Navy 

Kalvari is one of Indian Navy’s 6 Scorpene class stealth submarines which has been developed indigenously. This submarine was undocked in Delhi setting the way for sea trials and commissioning in 2016

The diesel-electric powered Scorpene submarine to be called INS Kalvari after commissioning will undergo extensive sea trials before it is cleared to formally join the Indian Navy. The diesel-electric submarines are being built at the state-run Mazgaon docks in Mumbai; they are expected to be inducted into the Navy by 2018, about four years later than planned.

The project has also over-shot the budget by nearly Rs. 5,000 crore and is expected to cost about Rs. 23,000 crore. “One (Scorpene) submarine will be delivered every nine months,” said Defence Minister Manohar Parrikar.

The 6 Scorpenes are being constructed by Mazgaon Docks Ltd in partnership with a firm from France, DCNS under Project 75.This project’s delivery was first scheduled in 2012 but has been delayed considerably.Defence ministry has announced that the P75 project can also invite private players for a JV which will assist in the early completion of the project.INS Kalvari-Scorpene Submarine,Indian Navy


The Indian Navy current has only 14 submarines of the conventional diesel electric type, 10 of which are ageing Russian Kilo class and 4 are German HDW class.Government is targeting 30 submarines before 2022.This is the first time a submarine will be entering the water with the aid of a pontoon to signify the completion of the hull and critical equipment in place .Floating out of Scorpene submarine INS Kalvari will lead to the start of the its sea trails and clear the dry docks .

To speed up India in the race for naval vessels, the NDA government has ordered for an accelerated tendering process to construct 6 conventional diesel electric submarines at a cost estimated to be INR 50,000 crore or USD 8.1billion alongside the Scorpenes.

DESIGN-INS Kalvari-Scorpene Submarine,Indian Navy

The submarine has length of 61.7m,beam of 6.2m,Draught of 5.4 m and draft of 5.8 m . It can displace 1565 tonnes of water.The submarines move with the speed of 20knots when submerged and 12knots when on surface.

It has range of 6500 nautical miles at 8knots speed (surfaced) and 550 nautical miles at 5 knots (submerged).It has endurance of 40 days compact and 50 days normal.

This Scorpene submarine is constructed from special steel and it can withstand high yield stress because it possesses tensile strength, it can withstand hydrostatic force of high magnitude and dive deeper.

INS Kalvari-Scorpene Submarine,Indian Navy

Features-INS Kalvari-Scorpene Submarine,Indian Navy

The state-of-the-art features of the Scorpene include superior stealth and ability to launch a crippling attack on the enemy using precision guided weapons. The attack can be launched with torpedoes, as well as tube launched anti-ship missiles, whilst underwater or on surface.It is designed to operate in all theatres including the tropics. It can also launch massive attacks through precision guided weapons.

These attack submarines are also equipped with diesel propulsion and extra air independent propulsion. All means and communications are provided to ensure interoperability with other components of a naval task force. It can undertake multifarious warfare, anti-submarine warfare, intelligence gathering, mine laying, area surveillance etc.

For safety the mechanisam of submarines is specailly designed by DRDO.As DRDO is in the process of establishing a system for carrying out structured health monitoring of under development nuclear submarines as well as future conventional Naval submarines.

INS Kalvari-Scorpene Submarine,Indian Navy


Kalvari and other submarines in this class are also equipped with WLT/Weapons Launching tubes and these can carry weapons on board which can effectively be reloaded at sea.

The submarine is equipped with 6 x 533-mm torpedo tubes for 18 whitehead Alenia Sustemi Subacquei Black Shark heavyweight torpedoes or SM.39 Exocet antiship missiles,30 mines in place of torpedoes.

Check the video of Launch of INS Kalvari-Scorpene Submarine,Indian Navy

About the Author

Vivek Bhardwaj
Vivek Bhardwaj
Hi,I am Vivek owner of this website and Mechanical engineering Student.I am here to blog all the stuff related to All Armed Forces.Jobs,DRDO,HAL,News.I am just madly love with blogging and My website.

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