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Defence Current Affairs

Prajna Satellite System: AI-Based Security Boost

Why in News?

The Government of India has introduced an advanced satellite imaging system named Prajna to strengthen internal security

prajna psc

What is Prajna?

  • Prajna is an AI-powered satellite imaging and analytics system.
  • Developed by the Defence Research and Development Organisation (DRDO).
  • Specifically designed to assist the Ministry of Home Affairs (MHA) in monitoring and security operations.
  • Key Function:Β Provides real-time satellite imagery with advanced AI analytics for quick decision-making.
  • Purpose:Β Primarily enhances surveillance, border management, and security operations.

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Russia Clears R-37M Missile for India

Why in News?

Russia has given approval to export the advanced R-37M (RVV-BD) air-to-air missile to India. This missile significantly enhances the Indian Air Force’s (IAF) long-range combat capability, especially against high-value airborne targets.

r 37m (rvv bd) air to air missile

What is R-37M Missile?

  • The R-37M (RVV-BD) is an ultra-long-range air-to-air missile (AAM) developed by Russia.
  • It is designed to engage and destroy targets at extremely long distances.
  • Range: 300–400 km (one of the longest in the world)
  • Speed: Exceeds Mach 6 (hypersonic category).
  • The missile will be deployed on the Sukhoi Su-30MKI.
  • This significantly boosts the IAF’s Beyond Visual Range (BVR) combat strength.

Concept: Air-to-Air Missiles (AAM)

An Air-to-Air Missile (AAM) is a guided weapon launched from an aircraft to destroy enemy aircraft.

Types of AAM:

  1. Within Visual Range (WVRAAM)
    • Range: Less than 30 km
    • Guidance: Infrared (heat-seeking)
  2. Beyond Visual Range (BVRAAM)
    • Range: More than 37 km
    • Guidance: Radar-guided
    • Examples:
      • Astra Mark I
      • Astra Mark II

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Defence ministry clears β‚Ή39,000 Cr Ghatak Stealth Drone Project

Why in News?

India has taken a major step in strengthening its defence capabilities by approving a β‚Ή39,000 crore project to develop advanced stealth drones. These drones, known as Ghatak, will significantly enhance the Indian Air Force’s (IAF) strike capabilities using indigenous technology.

ghatak project

What is the Ghatak Project?

  • The Ghatak is an unmanned stealth combat aerial vehicle (UCAV).
  • It is also referred to as the Remotely Piloted Strike Aircraft (RPSA) programme.
  • Developed by the Defence Research and Development Organisation (DRDO).
  • Designed mainly for deep penetration strike missions in hostile territories.

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3 ships – Dunagiri, Sanshodhak, and Agray – handed over to Navy

Why in News?

In a significant boost to India’s maritime strength, Garden Reach Shipbuilding and Engineers Ltd (GRSE) handed over three advanced naval platforms β€” Dunagiri, Sanshodhak, and Agray β€” to the Indian Navy.

dunagiri, sanshodhak, and agray

1. INS Dunagiri (Project 17A)

  • Type: Stealth Frigate
  • Class: Nilgiri Class
  • Project: Project 17A
  • Position: Fifth ship in the series

2. INS Agray (Arnala Class ASW SWC)

  • Type: Anti-Submarine Warfare Shallow Water Craft
  • Class: Arnala Class
  • Position: Fourth of eight vessels

INS Sanshodhak (Survey Vessel Large)

  • Type: Survey Vessel (Large)
  • Position: Final ship in SVL Project

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FOURTH SURVEY VESSEL (LARGE) β€˜SANSHODHAK’ DELIVERED TO INDIAN NAVY AT GRSE KOLKATA

Why in News:

The Indian Navy has completed its Survey Vessel (Large) (SVL) Project with the induction of INS Sanshodhak, the fourth and final ship in the series

ins sanshodhak

What is INS Sanshodhak?

  • INS Sanshodhak is a Survey Vessel (Large)
  • It is the fourth and final ship under the SVL project
  • Designed for:
    • Hydrographic surveys
    • Mapping sea floors
    • Supporting navigation safety

Survey Vessel (Large) Project

The SVL Project consists of four ships:

  1. INS Sandhayak
  2. INS Nirdeshak
  3. INS Ikshak
  4. INS Sanshodhak (final vessel)

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INS Malwan: Indigenous ASW Craft Boosts Navy

Why in News?

The Indian Navy has received β€˜Malwan’, the second Anti-Submarine Warfare Shallow Water Craft (ASW SWC), built by Cochin Shipyard Limited (CSL). This induction significantly enhances India’s coastal security and underwater surveillance capabilities.

ins malwan

What is ASW SWC β€˜Malwan’?

  • Malwan is an indigenously built Anti-Submarine Warfare Shallow Water Craft
  • Designed for:
    • Detecting and neutralizing enemy submarines
    • Operations in shallow coastal waters (littoral zones)

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INS Aridhaman: India’s 3rd Nuclear Submarine

Why in News?

India has achieved another milestone in its strategic defence capability with the commissioning of INS Aridhaman, its third nuclear-powered ballistic missile submarine (SSBN).

ins aridhaman

INS Aridhaman:

  • INS Aridhaman (S4) is India’s third indigenously developed SSBN.
  • It is part of the Arihant-class submarines.
  • Developed under the Advanced Technology Vessel (ATV) project.
  • Represents a major advancement in indigenous defence technology.

What is India’s SSBN Programme?

India’s SSBN Programme is a highly classified, indigenous project aimed at constructing nuclear-powered ballistic missile submarines (SSBNs) to establish a credible, sea-based second-strike capability. Β 

  • SSBN stands for ship submersible ballistic nuclear or nuclear-powered ballistic missile submarines.

Current Status of India’s SSBN Fleet (as of April 2026):

  • INS Arihant (S2):Β Commissioned in 2016.
  • INS Arighaat (S3):Β Commissioned in August 2024.
  • INS Aridhaman (S4):Β Commissioned in April 2026.
  • S4Β (likely INS Arisudan):* Currently undergoing sea trials, expected commissioning in 2027
https://www.thehindu.com/news/national/indias-new-nuclear-powered-submarine-ins-aridhaman-commissioned/article70819744.ece: INS Aridhaman: India’s 3rd Nuclear Submarine

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INS Taragiri Commissioned: Boost to India’s Naval Power

Why in News?

The INS Taragiri (F41) is the newest stealth guided-missile frigate of the Indian Navy, commissioned at the Naval Dockyard in Visakhapatnam

ins taragiri

INS Taragiri – Key Highlights

  • INS Taragiri (F41) is the fourth ship under the Project 17A (Nilgiri-class).
  • It is a stealth guided-missile frigate designed for advanced naval warfare.
  • Built by Mazagon Dock Shipbuilders Limited (MDL), Mumbai.
  • Commissioned at the Eastern Naval Command, Visakhapatnam.

What is Project 17A?

Project 17A (P17A) involves the construction of seven advanced Nilgiri-class stealth guided-missile frigates for the Indian Navy, designed for improved stealth, survivability, and combat capability. Built by Mazagon Dock Shipbuilders (MDL) and Garden Reach Shipbuilders & Engineers (GRSE),

Project 17A Vessels:

  • INS Nilgiri:Β First of class.
  • INS Himgiri:Β Built by GRSE.
  • INS Udaygiri:Β Built by MDL.
  • INS Taragiri:Β Commissioned April 2026.
  • INS Dunagiri:Β Delivered to the Indian Navy.
  • INS Vindhyagiri:Β Launched by GRSE.
  • Mahendragiri:Β Seventh frigate
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2248799&reg=3&lang=1: INS Taragiri Commissioned: Boost to India’s Naval Power

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INS Arnala Commissioned: India’s First Indigenous ASW Shallow Watercraft Explained

Why in News?

Indian Navy has commissioned INS Arnala, the first indigenously designed Anti-Submarine Warfare Shallow Watercraft (ASW-SWC)

ins arnala

INS Arnala

  • INS Arnala is:
    • India’s first indigenous ASW Shallow Watercraft (ASW-SWC)
    • Designed for anti-submarine operations in shallow waters
  • Built by:
    • Garden Reach Shipbuilders & Engineers (GRSE)
    • In collaboration with Larsen & Toubro (L&T)
  • Significance:
    • Enhances coastal defence capability
    • Strengthens indigenous shipbuilding capacity
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2137263&reg=3&lang=2: INS Arnala Commissioned: India’s First Indigenous ASW Shallow Watercraft Explained

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Agni-III Missile Test 2026: Range, Features & Strategic Forces Command Explained

Why in News?

India successfully test-fired the Agni-III intermediate-range ballistic missile (IRBM).

agni iii missile test

Agni-III

Type: Intermediate-Range Ballistic Missile (IRBM)

Range: Approximately 3,000–3,500 km Capable of targeting deep regions in South and East Asia

Payload Capacity:

  • Up to 1.5 tonnes
  • Can carry conventional or nuclear warheads

Propulsion:

  • Two-stage solid fuel missile
  • Enables quick launch and higher reliability

Strategic Forces Command:

  • Strategic Forces Command (SFC) manages India’s nuclear weapons arsenal.
  • It operates under the Nuclear Command Authority (NCA).

Three-Tier Structure

  1. Political Council
    • Chaired by the Prime Minister
    • Sole authority to order nuclear strike
  2. Executive Council
    • Chaired by the National Security Advisor (NSA)
    • Provides inputs and executes decisions
  3. Strategic Forces Command (SFC)
    • Headed by a Commander-in-Chief (3-star officer)
    • Responsible for operational deployment of nuclear forces
https://www.pib.gov.in/PressReleasePage.aspx?PRID=2224636&reg=3&lang=1: Agni-III Missile Test 2026: Range, Features & Strategic Forces Command Explained

Agni-III Missile Test 2026: Range, Features & Strategic Forces Command Explained Read More Β»