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Current AffairsInternal Security

INS Dunagiri, Sanshodhak, Agray: How Indian Navy's 3 new indigenous ships add varied capabilities

Monday, 22 June 20268 min read1,459 words26

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Internal SecurityDeep Analysisdefence securitygovernance reformsinfrastructureindustry

In this article

ContextBackground & Historical EvolutionKey Points & FactsMulti-Dimensional AnalysisWay Forward

Context

On June 21, 2026, Prime Minister Narendra Modi commissioned three indigenously built warships—INS Dunagiri, INS Sanshodhak, and INS Agray—into the Indian Navy at the Syama Prasad Mookerjee Port in Kolkata. The vessels were designed by the Indian Navy's Warship Design Bureau and built by the government-owned Garden Reach Shipbuilders and Engineers (GRSE). INS Dunagiri is a stealth guided-missile frigate (the fifth Nilgiri-class ship under Project 17A), INS Sanshodhak is the fourth and final Survey Vessel (Large) for hydrographic mapping, and INS Agray is an anti-submarine warfare shallow-water craft (Arnala class). The commissioning fell on World Hydrography Day. PM Modi emphasized that the event reflects India's growing maritime capabilities and the push for self-reliance (Aatmanirbhar Bharat) in defence manufacturing. Chief of the Naval Staff Admiral Krishna Swaminathan noted that this tri-commissioning, just 17 months after India's first simultaneous commissioning of three warships in Mumbai in January 2025, demonstrates accelerated warship-building capability.

Background & Historical Evolution

The commissioning of these three warships is part of India's long-standing effort to indigenize naval construction. The Indian Navy's Warship Design Bureau, established decades ago, has progressively taken over design from foreign collaborators. Project 17A (Nilgiri-class frigates) was approved in 2015 to build seven stealth frigates, with GRSE and Mazagon Dock Shipbuilders Limited as builders. The lead ship, INS Nilgiri, took 93 months to build, while INS Dunagiri was delivered in 80 months, reflecting learning curve gains. The Survey Vessel (Large) programme (four ships: Sandhayak, Nirdeshak, Ikshak, and Sanshodhak) replaced ageing sand-class vessels, with the first commissioned in 2024. The Arnala-class anti-submarine warfare shallow-water craft programme (16 ships) was approved in 2013 to replace the Abhay-class corvettes, which entered service in the 1990s. India's first simultaneous commissioning of three warships occurred in Mumbai in January 2025 (INS Surat, INS Nilgiri, and INS Vaghsheer), marking a new tempo. The government's Aatmanirbhar Bharat policy, launched in 2020, has pushed for higher indigenous content: from 40% in 2014 to over 80% in some new platforms. Defence production rose from about ₹40,000 crore in 2014 to nearly ₹1.8 lakh crore in 2025-26, as noted by the PM. The commissioning in Kolkata also highlights the role of GRSE, a key defence public sector undertaking.

Key Points & Facts

  • Three warships commissioned on June 21, 2026: INS Dunagiri (stealth guided-missile frigate), INS Sanshodhak (hydrographic survey vessel), INS Agray (anti-submarine warfare shallow-water craft).
  • Ceremony held at Syama Prasad Mookerjee Port, Kolkata, attended by PM Modi, West Bengal Governor RN Ravi, Chief Minister Suvendu Adhikari, and Chief of Naval Staff Admiral Krishna Swaminathan.
  • INS Dunagiri is the fifth of seven Nilgiri-class frigates under Project 17A, built at GRSE; delivered in 80 months vs 93 months for INS Nilgiri (first-of-class).
  • INS Dunagiri displaces approximately 6,670 tonnes, is 149 metres long, uses Combined Diesel or Gas (CODOG) propulsion.
  • It is equipped with BrahMos surface-to-surface missiles and Medium Range Surface-to-Air Missile (MRSAM) system.
  • INS Sanshodhak is the fourth and final Survey Vessel (Large) designed for seabed mapping, carrying Autonomous Underwater Vehicles (AUVs) and Remotely Operated Vehicles (ROVs).
  • INS Sanshodhak has multi-beam echo sounders and digital side-scan sonar; indigenous content exceeds 80%.
  • INS Agray is an Arnala-class anti-submarine warfare shallow-water craft, 77 metres long, 900 tonnes displacement, equipped with lightweight torpedoes, indigenous rocket launchers, and shallow-water sonar.
  • INS Agray uses waterjet propulsion for reduced noise and better manoeuvrability.
  • The project involved over 200 small enterprises and generated employment for approximately 4,000 personnel directly and more than 10,000 indirectly.
  • PM Modi stated defence production rose from ~₹40,000 crore in 2014 to nearly ₹1.8 lakh crore.
  • Over 40 indigenously built warships inducted in recent years; 45 more under construction.
  • Two more Project 17A frigates (INS Mahendragiri and INS Vindhyagiri) yet to be commissioned.

Multi-Dimensional Analysis

Political & Constitutional Dimensions: The commissioning was used by PM Modi to signal a broader ambition for West Bengal as a hub for the Blue Economy, just weeks after the BJP won the state from the TMC. This underscores the political symbolism of defence modernization being linked to regional development. Constitutionally, defence is a Union subject (List I, Entry 1 of the Seventh Schedule), and the central government has exclusive authority over procurement and manufacturing. The event also highlights cooperative federalism where a state government (West Bengal) participates in ceremonies, though the CM was from the ruling party at the centre. Critics may argue that while three ships were commissioned, the pace of indigenization remains uneven, with some critical components still imported. However, the government defends Aatmanirbhar Bharat as reducing strategic vulnerabilities.

Economic & Financial Impact: The defence production increase from ₹40,000 crore (2014) to nearly ₹1.8 lakh crore represents a 4.5x growth, indicating substantial fiscal multiplier effects. The project involved over 200 small enterprises and created ~14,000 direct and indirect jobs, contributing to local economic development in Kolkata. The reduced build time (80 months vs 93) lowers unit costs and enhances capital efficiency. Critics may point out that indigenization can initially raise procurement costs due to R&D investments, but the long-term benefits include reduced foreign exchange outflow and greater control over supply chains. The Blue Economy potential, especially through survey vessels like Sanshodhak, can boost coastal shipping and resource mapping.

Social Dimensions: Employment generation for 4,000 direct and 10,000 indirect workers, mostly from West Bengal, has positive social equity implications, particularly in a state with industrial decline. The involvement of 200+ small enterprises supports MSME growth. However, there is no mention of specific community or regional equity measures; the benefits may be concentrated in urban Kolkata. The survey vessel's role in humanitarian assistance and disaster relief (HADR) has welfare implications for coastal communities prone to cyclones. Critics may argue that such defence spending could have been diverted to social sectors like health and education, but the government maintains that national security is a prerequisite for development.

Governance & Administrative Aspects: The Warship Design Bureau and GRSE exemplify institutional capacity building within public sector shipyards. The reduction in build time from 93 to 80 months indicates improved project management and learning. The tri-commissioning itself shows administrative efficiency in synchronizing delivery and ceremonies. However, challenges remain: 45 more platforms under construction require sustained funding, supply chain reliability, and quality control. The involvement of small enterprises raises concerns about compliance with defence standards. Federalism implications are limited since defence is a central subject, but the state benefits from ancillary industries. The government policy of Aatmanirbhar Bharat is driving self-reliance, but critics note that delays in major projects (e.g., aircraft carriers) still persist.

International Perspective: The commissioning comes amidst global naval modernization, especially in the Indo-Pacific region where China has rapidly expanded its fleet. India's indigenization reduces dependence on foreign suppliers like Russia, the US, and European nations. The BrahMos missile is a joint venture with Russia, but the MRSAM has Israeli collaboration; still, the ship's design and most systems are Indian. The use of waterjet propulsion and CODOG reflects adoption of global best practices. Compared to China, India's warship-building speed is improving but still lags. On World Hydrography Day, INS Sanshodhak's commissioning signals India's commitment to ocean governance, which aligns with UNCLOS obligations. The Blue Economy push has diplomatic implications for maritime regional cooperation (e.g., with IOR countries).

Way Forward

Short-term measures:

  • Accelerate completion of remaining Project 17A frigates (INS Mahendragiri and INS Vindhyagiri) and Arnala-class vessels, with a target to reduce build time further below 70 months through lean manufacturing techniques.
  • Operationalize INS Sanshodhak for full-time hydrographic survey of India's Exclusive Economic Zone (EEZ) and priority shipping lanes, coordinating with the National Hydrographic Office.
  • Enhance local supply chain capacity for critical subsystems (sonar arrays, torpedoes) to achieve 90% indigenous content in the next batch of warships.

Medium-term reforms:

  • Implement the recommendation of the 2022 Parliamentary Standing Committee on Defence to establish a dedicated 'Shipbuilding Innovation Fund' with ₹5,000 crore to incentivize MSMEs and startups for defence R&D.
  • Set up a 'Navy Shipbuilding Cluster' in Kolkata with common testing facilities, leveraging GRSE's expertise, along the lines of the successful 'Aerospace Park' in Bengaluru.
  • Introduce performance-linked incentives for public sector shipyards based on delivery timelines and cost savings, as suggested by the Dhirendra Singh Committee (2005) on defence procurement.

Long-term vision:

  • Develop a 20-year 'Maritime Capability Roadmap' with a target of 200+ active warships by 2047, with at least 90% indigenous content, aligned with the National Security Strategy.
  • Invest in nuclear-powered submarine construction with a dedicated facility in Visakhapatnam or Kolkata, reducing reliance on foreign designs.
  • Promote joint ventures with private shipyards like L&T and Cochin Shipyard to increase competition and capacity, as recommended by the 2020 Naval Innovation and Indigenisation Organisation (NIID) roadmap.
  • Integrate Blue Economy development with naval infrastructure: dual-use ports for civilian and military purposes, and coastal economic zones linked to shipbuilding clusters.

What can be asked in exam?

  • •Prelims angle: INS Dunagiri is the fifth Nilgiri-class stealth frigate built under Project 17A by Garden Reach Shipbuilders and Engineers (GRSE).
  • •Prelims angle: INS Sanshodhak is the fourth and final Survey Vessel (Large) commissioned on World Hydrography Day, equipped with AUVs and ROVs.
  • •Prelims angle: INS Agray is an Arnala-class Anti-Submarine Warfare Shallow Water Craft with waterjet propulsion and shallow-water sonar.
  • •Mains angle: Discuss the significance of simultaneous commissioning of three indigenous warships in strengthening India's maritime security and the Aatmanirbhar Bharat initiative. (GS-III: Security & Defence, 250 words)
  • •Mains angle: Analyze the role of public sector shipyards like GRSE in India's defence indigenisation with reference to the recent tri-commissioning. (GS-III: Infrastructure & Defence, 250 words)

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Genetic engineering, a revolutionary branch of biotechnology, continues to evolve rapidly, transforming the way we approach medicine, agriculture and various scientific endeavours. Recent developments in this field highlight both the immense potential and ethical considerations that come with the power to manipulate DNA. In the medical realm, gene editing technologies like CRISPR-Cas9 have gained prominence. These tools offer unprecedented precision in modifying genes, holding promise for treating genetic disorders. In a groundbreaking clinical trial, researchers successfully used gene editing to treat sickle cell anaemia. The patient’s own modified cells were reintroduced into their body, resulting in reduced symptoms and an improved quality of life. In agriculture, genetic engineering is driving advancements in crop production and food security. The development of Genetically Modified (GM) crops has enabled plants to resist pests, withstand harsh climates and improve nutritional content. For instance, GM rice has been biofortified to contain higher levels of essential vitamins, potentially combating malnutrition in regions where rice is a staple food. However, these advancements also raise ethical concerns. The potential for creating “designer babies” through gene editing has sparked debates about the boundaries of genetic manipulation. The question of whether it’s ethical to alter human DNA to enhance physical or cognitive traits continues to challenge bioethicists, policymakers and society at large. Data indicates the exponential growth of genetic engineering research. In the past decade, the number of scientific publications related to CRISPR technology has multiplied significantly. In 2010, there were approximately 150 CRISPR-related publications; by 2020, that number had soared to over 9,000. This surge demonstrates the profound impact of genetic engineering on the scientific community. As we navigate this brave new world of genetic engineering, striking a balance between innovation and ethical considerations remains paramount. The potential to cure genetic diseases, enhance food security and make leaps in scientific understanding is immense. However, careful consideration and collaboration are necessary to ensure that the benefits are realized while addressing the ethical complexities that accompany these technological breakthroughs.

Which gene editing technology has gained prominence recently?

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  2. It is a tool for gene editing
  3. It enhances physical traits
  4. It is used in biofortification

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OPSC PYQ 2 (2022) — English Comprehension

EMBEZZLE

In the following question, choose the word which best expresses the meaning of the given word: EMBEZZLE

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How many pairs of letters are there in the word 'CASTRAPHONE' which have as many letters between them in the word as in the alphabet?

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Science · 2022

Direction / Passage

Genetic engineering, a revolutionary branch of biotechnology, continues to evolve rapidly, transforming the way we approach medicine, agriculture and various scientific endeavours. Recent developments in this field highlight both the immense potential and ethical considerations that come with the power to manipulate DNA. In the medical realm, gene editing technologies like CRISPR-Cas9 have gained prominence. These tools offer unprecedented precision in modifying genes, holding promise for treating genetic disorders. In a groundbreaking clinical trial, researchers successfully used gene editing to treat sickle cell anaemia. The patient’s own modified cells were reintroduced into their body, resulting in reduced symptoms and an improved quality of life. In agriculture, genetic engineering is driving advancements in crop production and food security. The development of Genetically Modified (GM) crops has enabled plants to resist pests, withstand harsh climates and improve nutritional content. For instance, GM rice has been biofortified to contain higher levels of essential vitamins, potentially combating malnutrition in regions where rice is a staple food. However, these advancements also raise ethical concerns. The potential for creating “designer babies” through gene editing has sparked debates about the boundaries of genetic manipulation. The question of whether it’s ethical to alter human DNA to enhance physical or cognitive traits continues to challenge bioethicists, policymakers and society at large. Data indicates the exponential growth of genetic engineering research. In the past decade, the number of scientific publications related to CRISPR technology has multiplied significantly. In 2010, there were approximately 150 CRISPR-related publications; by 2020, that number had soared to over 9,000. This surge demonstrates the profound impact of genetic engineering on the scientific community. As we navigate this brave new world of genetic engineering, striking a balance between innovation and ethical considerations remains paramount. The potential to cure genetic diseases, enhance food security and make leaps in scientific understanding is immense. However, careful consideration and collaboration are necessary to ensure that the benefits are realized while addressing the ethical complexities that accompany these technological breakthroughs.

Which gene editing technology has gained prominence recently?

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