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Submarine Vagsheer and its features, capabilities

  • Category
    Science & Technology
  • Published
    4th May, 2022

Context

Vagsheer, the sixth submarine of the P75 project of the Indian Navy was launched recently.

About

About Submarine ‘Vagsheer’:

  • Vagsheer is named after the sand fish, a deep sea predator of the Indian Ocean.
  • The first submarine Vagsheer, from Russia, was commissioned into the Indian Navy on December 26, 1974, and was decommissioned on April 30, 1997.
  • The new Vagsheer will be officially named at the time of its commissioning.
  • Specifications:
  • Vagsheer can take up to eight officers and 35 men.
  • It is 67.5 metres long and 12.3 metres high, with a beam measuring 6.2 metres.
  • Vagsheer can reach top speed of 20 knots when submerged and a top speed of 11 knots when it surfaces.
  • The hull, fin and hydroplanes are designed for minimum underwater resistance and all equipment inside the pressure hull is mounted on shock-absorbing cradles for enhanced stealth.
  • Features:
  • Vagsheer is a diesel attack submarine, designed to perform sea denial as well as access denial warfare against the adversary.
  • It can do offensive operations across the spectrum of naval warfare including anti-surface warfare, anti-submarine warfare, intelligence gathering, mine laying and area surveillance.
  • It is enabled with a C303 anti-torpedo counter measure system.
  • It can carry up to 18 torpedoes or Exocet anti-ship missiles, or 30 mines in place of torpedoes.
  • Its superior stealth features include advanced acoustic absorption techniques, low radiated noise levels, hydro-dynamically optimised shape, and it has the ability to launch a crippling attack using precision guided weapons, underwater or on surface.
  • Scorpene submarines can undertake various types of missions such as anti-surface warfare, anti-submarine warfare, intelligence gathering, mine laying, area surveillance etc.

List of other submarines under Scorpene-class submarines:

  • First submarine: INS Kalvari- commissioned on 14 December 2017.
  • Second: INS Khanderi – September 2019
  • Third: INS Karanj – March 2021
  • Fourth: INS Vela – November 2021
  • Fifth: INS Vagir- launched in November 2020 and is undergoing sea trials.

Project 75 India (P-75I)

  • P75I was first cleared in 2007, but lay dormant until now after undergoing numerous changes.
  • The P75I project is part of a 30-year submarine building plan that ends in 2030.
  • The project cost is about Rs. 45,000 crore.
  • As part of this plan, India was to build 24 submarines — 18 conventional submarines and six nuclear-powered submarines (SSNs) — as an effective deterrent against China and Pakistan.
  • This project envisages the construction of six conventional submarines with better sensors and weapons and the Air Independent Propulsion System (AIP).
  • The project has been cleared under the strategic partnership model.
  • Under P75, INS Kalvari, INS Khanderi, INS Karanj and INS Vela have been commissioned. Sea trials are on for Vagir. Vagsheer is the sixth; its production was delayed due to the pandemic.

Scorpene Class Submarine:

  • These are diesel-electric attack submarines jointly developed by the French company - Naval Group (formerly Direction des Constructions Navales (DCNS)) and the Spanish company - Navantia.
  • These submarines can undertake multifarious tasks typically undertaken by any modern submarine which include anti-surface as well as anti-submarine warfare.
  • They feature diesel propulsion and additional Air-Independent Propulsion (AIP).
  • AIP is a marine propulsion technology that allows a non-nuclear submarine to operate without access to atmospheric oxygen (by surfacing or using a snorkel).
  • The system of AIP fitted in this class of submarines is a modified version of nuclear propulsion system with heat being generated by ethanol and oxygen.
  • The combustion of the ethanol and stored oxygen, at a pressure of 60 atm, generates steam which powers a conventional turbine power plant.
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