India’s 2nd Nuclear Submarine INS Aridhaman will break cover this year after China launched Aircraft Carrier?

As Soon as China launched first home-grown aircraft carrier, India is abuzz with a deliberate leak or just an Internet chatter on Possibility of second nuclear-powered ballistic missile submarine being built by India dubbed officially S-3 will break cover my end of this year.

The second Arihant-class submarine also known as ” INS Aridhaman ” has been under construction from 2010-12 in Ship Building Centre in Visakhapatnam.

Indian media reports hints Aridhaman might already have seen its soft launch sometime back after reports of outfitting work completed emerged a few years back. INS Arihant which was launched in July 2009 already has been inducted into Indian Navy last year and eight years since its launch news of Aridhaman breaking cover looks more realistic than ever.

 

What makes INS Aridhaman more deadlier than its predecessor INS Arihant :::

INS Aridhaman is the second nuclear-powered ballistic missile submarine being built by India. She is being built under the Advanced Technology Vessel (ATV) project to build nuclear submarines at the Ship Building Centre in Visakhapatnam. Even though the same class as INS Arihant, she will feature 8 launch tubes instead of the 4 giving her double the firepower of Arihant. Thus she could carry 24 K-15 Sagarika short range SLBMs or 8 K-4 long range SLBMs. She will also feature more powerful reactor than her predecessor.

The boat will have a seven-blade propeller powered by a pressurised water reactor. She can achieve a maximum speed of 12–15 knots (22–28 km/h) on water surface and 24 knots (44 km/h) underwater.

The submarine has eight launch tubes in its hump. She can carry up to 24 K-15 Sagarika missiles (each with a range of 750 km or 470 mi), or 8 of the under-development K-4 missiles (with a range of 3,500 km or 2,200 mi).

INS Aridhaman will be fitted with the sonar ISS (Integrated Sonar Suite), state-of-the-art sonar developed by NPOL DRDO. It is a unified submarine sonar and tactical control system, which includes all types of sonar (passive, surveillance, ranging, intercept, obstacle avoidance and active). It also features an underwater communications system. The hull features twin flank-array sonars and Rafael broadband expendable anti-torpedo countermeasures.

She is being built under the Advanced Technology Vessel (ATV) project to build nuclear submarines at the Ship Building Centre in Visakhapatnam. This submarine will have double the number of missile hatches than its predecessor INS Arihant giving it the ability to carry more missiles. This will have a more powerful reactor than its predecessor.

Engine and Performance

The Arihant Class submarine will propelled by one seven-blade propeller which will be powered by a Pressurised Water Reactor(PWR) (nuclear). In a PWR, the primary coolant (water) is pumped under high pressure to the reactor core where it is heated by the energy generated by the fission of atoms. The heated water then flows to a steam generator where it transfers its thermal energy to a secondary system where steam is generated and flows to turbines which, in turn, spin an electric generator.

The submarine can achieve a maximum speed of 12-15 knots (22-28 km/h) when on surface and 24 Knots (44 km/h) when submerged.The depth to which submarine will be submerged is from 300m to 400m.

Sensors and Processing System

INS Aridhaman will be fitted with sonar ISS (Integrated Sonar Suite),State-of-art sonar integrated sonar system USHUS sonar developed by Naval Physical and Oceanographic Laboratory (NPOL) of the Defence Research and Development Organisation (DRDO), India. The submarine will also have Panchendriya sunar which is a unified submarine sonar and tactical control system, and it includes all types of sonar (passive, surveillance, ranging, intercept, obstacle avoidance and active).It is used for detecting and tracking enemy submarines, surface vessels, and torpedoes and can be used for underwater communication and avoiding obstacles.

The hull features twin flank-array sonars and Rafael broadband expendable anti-torpedo countermeasures.

Armament

INS Aridhaman has eight launch tubes in its hump.It can carry up to 24 K-15 Sagarika missile each with a range of 750 km (470 mi) or 8 of the under-development k-4 missiles SLBM (with a range of 3,500 km (2200 mi).The submarine also integrated with 6 torpedo tubes of 21” (533 mm).

 

INS Aridhaman is considered to be bigger ship then INS Arihant and a proper nuclear-powered ballistic missile submarine due to its ability to carry more ballistic missiles than its lead ship. S-4 which is third ballistic missile submarine will be mirror vessel of S-3 and is currently going through hull fabrication. National Security Adviser Ajit Doval as prevented media leaks on Indian Nuclear Submarine program since 2016 due to which there has been a drop in leaks to media about this progress and current status.

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