Why in the news?
- The Indian Navy inducted its third Scorpene-class conventional diesel electric submarine, INS Karanj, into service under Project 75I.
- The last two Scorpene class submarines induced were INS Kalvari and INS Khanderi.
- A fourth submarine, Vela, was launched into the water in May 2019 and the fifth, Vagir, in November 2020, and both are undergoing sea trials. The sixth is in an advanced stage of outfitting.
What are Scorpene-class submarines?
- They are the most advanced conventional submarines with superior stealth features, such as advanced acoustic silencing techniques, low radiated noise levels and ability to attack with precision-guided weapons on board.
- They were designed by French naval shipbuilding firm DCNS in partnership with Spanish shipbuilding firm Navantia.
- These are used in the missions such as area surveillance, intelligence gathering, anti-submarine warfare, anti-surface warfare and minelaying operations.
- It can carry upto 6 torpedoes and 18 heavy weapons.
- With 350 meters diving depth, it can travel upto 20 knots speed (37.04 kmph) and submerged upto 21 days.
What is special about INS Karanj?
- It has the best sensors in the world and is fitted with an integrated platform management system to provide centralised propulsion and machinery control.
- It has powerful engines that quickly recharges the batteries which are crucial for stealthy response.
- Its design enables upgradation to air independent propulsion (which allows a non-nuclear submarine to operate without access to atmospheric oxygen) in future.
- It is fitted with a permanent magnetic synchronous motor, making it one of the quietest submarines in the world.
About Project 75I
- Indian Navy’s Project 75I (P75I) is development of Scorpene submarine development for six latest-generation attack submarines.
- It is expected to be completed by 2022.
- The project is taking shape at Mazagon Dock in Mumbai.