On 22 June 2026, two strands of India's maritime strategy played out on opposite edges of the Indian Ocean. In Ho Chi Minh City, Vietnam, the Eastern Fleet warships INS Udaygiri (a stealth frigate) and INS Kavaratti (an anti-submarine warfare corvette) — both indigenously designed and built — arrived at Nha Rong Port, led by the Flag Officer Commanding Eastern Fleet, for an operational deployment to South East Asia. The same day, on the far western side, INS Tarkash, a stealth frigate, departed Port Louis, Mauritius, after a port call, to continue its deployment in the South West Indian Ocean Region. Read together, these two PIB releases are a textbook study of how the Indian Navy uses ships as instruments of foreign policy — and they bundle several high-yield NDA themes: ship classes and their origins, naval commands, and the doctrines SAGAR and MAHASAGAR.
The three warships: class, origin and what to remember
NDA questions love to pair a named warship with its class, builder and role. Fix these three ships precisely:
- INS Udaygiri is a Project 17A (P-17A) stealth frigate of the Nilgiri class. The P-17A frigates are multi-mission, guided-missile stealth frigates built indigenously at Mazagon Dock Shipbuilders (MDL), Mumbai and Garden Reach Shipbuilders & Engineers (GRSE), Kolkata. Udaygiri was delivered in 2025 and is a follow-on to the earlier Shivalik-class (Project 17) frigates, with a reduced radar cross-section, BrahMos and Barak-8 missiles and modern sensors. The "giri" naming (Nilgiri, Himgiri, Taragiri, Udaygiri, Dunagiri, Vindhyagiri) is itself a memory hook.
- INS Kavaratti is a Project 28 (P-28) anti-submarine warfare (ASW) corvette of the Kamorta class, built by GRSE, Kolkata. The Kamorta-class ships were India's first indigenously built ASW stealth corvettes, with a very high indigenous content and a carbon-fibre composite superstructure. Their job is hunting submarines, so they carry torpedoes, ASW rockets and a helicopter. (Note the spelling trap: the corvette is Kavaratti; Kavaratti is also the capital of Lakshadweep — a classic cross-link.)
- INS Tarkash is a Talwar-class stealth frigate of Russian origin, built in Russia under a series of frigates India ordered from Russian yards. So in one news cycle you get the contrast that examiners love: two indigenous ships (Udaygiri, Kavaratti) showcasing Atmanirbharta, and one imported ship (Tarkash) representing the older procurement model.
The single cleanest takeaway: frigate vs corvette. A frigate is a larger, general-purpose warship (Udaygiri, Tarkash); a corvette is smaller and more specialised (Kavaratti, built for ASW). Both sit below a destroyer in size and above patrol vessels.
Naval commands: who controls what
These deployments are organised through the Indian Navy's operational commands. The Navy has three:
- Western Naval Command — HQ Mumbai. The Navy's primary strike force, facing the Arabian Sea and Pakistan.
- Eastern Naval Command — HQ Visakhapatnam. Faces the Bay of Bengal and the eastern Indian Ocean; its Eastern Fleet is the one deploying to Vietnam and South East Asia in this news. Visakhapatnam is also home to major naval infrastructure and the submarine arm.
- Southern Naval Command — HQ Kochi. The training command of the Navy.
For revision, lock the pairing: Western = Mumbai, Eastern = Visakhapatnam, Southern = Kochi (training). The fact that the Vietnam-bound ships are led by the Flag Officer Commanding Eastern Fleet tells you they belong to the Eastern Naval Command. India also runs a separate tri-service Andaman and Nicobar Command (HQ Port Blair), the country's only theatre command, which guards the approaches to the Malacca Strait — directly relevant to any South East Asia deployment. You will meet the Bay of Bengal, the Malacca Strait and the Andaman geography again in our NDA geography notes on transport and connectivity.
SAGAR and MAHASAGAR: the doctrine behind the deployments
Why send warships on goodwill visits at all? Because the Navy is the lead instrument of India's Indian Ocean strategy, expressed through two named visions:
- SAGAR — "Security and Growth for All in the Region." Announced by the Prime Minister on 12 March 2015 in Mauritius, SAGAR is India's vision for cooperative maritime security in the Indian Ocean Region (IOR): safeguarding sea lanes, building partner capacity, and pursuing growth with neighbours rather than dominance over them. The fact that it was launched in Mauritius makes the Tarkash visit a living illustration of SAGAR.
- MAHASAGAR — "Mutual and Holistic Advancement for Security and Growth Across Regions." This is the evolution and expansion of SAGAR, broadening the vision from the immediate IOR neighbourhood to a wider, Global-South-oriented framework. The Tarkash release explicitly invokes MAHASAGAR — so for 2026 current affairs, remember that India's maritime tagline has grown from SAGAR (2015) to MAHASAGAR.
Both sit inside the broader concept of the Indo-Pacific, the strategic super-region stretching from the east coast of Africa to the western Pacific, where India seeks a free, open and inclusive order. The Vietnam deployment is the Indo-Pacific limb; the Mauritius call is the classic IOR-neighbourhood limb. Tracking how one doctrine explains two very different port calls is exactly the analytical skill our daily NDA current affairs set is built to train.
Mission-based deployments and the "first responder" Navy
The Vietnam release describes the ships as on an "operational deployment." This reflects the Navy's mission-based deployment concept: instead of ships sailing out only for specific exercises and returning, India keeps warships persistently deployed at key choke points and sea lanes across the IOR and beyond. This gives India continuous presence, faster response and visible commitment to maritime security.
That posture also makes the Navy India's maritime "first responder." When disaster strikes the region — a cyclone, a tsunami, a stranded merchant ship, a humanitarian crisis — Indian warships are often first on the scene with Humanitarian Assistance and Disaster Relief (HADR). From evacuating citizens during conflicts to delivering water and medicines to island states, the Navy has built a reputation as a net security provider in the IOR. Goodwill port calls like those at Ho Chi Minh City and Port Louis — with cross-deck exchanges, training capsules for the Mauritius National Coast Guard, and community outreach — are the peacetime face of the same capability that responds in a crisis. This blend of hard capability and soft diplomacy is the heart of naval diplomacy, and it is exactly the kind of theme that surfaces in NDA general-knowledge current affairs.
India–Vietnam and India–Mauritius: the bilateral threads
Both visits sit on long-standing defence relationships:
- India–Vietnam. The Vietnam deployment is described as the Navy's first major presence in Vietnam since the relationship was elevated to an Enhanced Comprehensive Strategic Partnership in 2026. Vietnam is a key India partner in South East Asia and the South China Sea, and naval cooperation, training and capacity-building have grown steadily. A South East Asia deployment also signals India's stake in a free and open Indo-Pacific.
- India–Mauritius. Mauritius is among India's closest IOR partners, with deep people-to-people ties (a large Indian-origin population) and close defence and coastal-security cooperation. The Tarkash visit included professional training for the Mauritius National Coast Guard and drew hundreds of the Indian diaspora aboard — and it was in Mauritius that SAGAR was first articulated in 2015, which is why this port call is so doctrinally loaded.
Atmanirbharta: building warships at home
The deeper structural story is self-reliance (Atmanirbharta) in warship-building. Two of the three ships on display — Udaygiri and Kavaratti — were designed and built in India by the Defence Public Sector Undertakings (DPSUs) that anchor Indian naval shipbuilding:
- Mazagon Dock Shipbuilders Ltd (MDL), Mumbai — destroyers and frigates (including P-17A) and submarines.
- Garden Reach Shipbuilders & Engineers (GRSE), Kolkata — frigates and ASW corvettes (the Kamorta class).
- Goa Shipyard Ltd (GSL) and Hindustan Shipyard Ltd (HSL), Visakhapatnam complete the picture.
India is today one of a small group of nations that designs and builds its own stealth frigates, corvettes, destroyers and aircraft carriers — the indigenous carrier INS Vikrant being the flagship example. Sending home-built warships on flag-showing visits abroad is therefore both a diplomatic and an industrial statement. Aspirants aiming at a naval or technical career will study these defence-industrial themes in depth in the upcoming Cavalier courses in Delhi.
🎯 Practice MCQs
Q1. INS Udaygiri, deployed to Vietnam in June 2026, belongs to which class of warship? (a) Visakhapatnam-class destroyer (b) Nilgiri-class (Project 17A) stealth frigate (c) Kamorta-class corvette (d) Talwar-class frigate → (b) — Udaygiri is a Project 17A (Nilgiri-class) indigenous stealth frigate built by MDL.
Q2. INS Kavaratti is best described as: (a) a Russian-origin frigate (b) an aircraft carrier (c) an indigenous Project 28 (Kamorta-class) anti-submarine warfare corvette (d) a submarine → (c) — Kavaratti is a Kamorta-class ASW corvette built indigenously by GRSE, Kolkata.
Q3. Among Udaygiri, Kavaratti and Tarkash, which is of Russian origin? (a) Udaygiri (b) Kavaratti (c) Tarkash (d) all three → (c) — INS Tarkash is a Talwar-class frigate built in Russia; the other two are indigenous.
Q4. The headquarters of the Eastern Naval Command is at: (a) Mumbai (b) Kochi (c) Visakhapatnam (d) Port Blair → (c) — Eastern Naval Command (and the Eastern Fleet) is headquartered at Visakhapatnam.
Q5. "SAGAR," India's maritime vision first articulated in Mauritius in 2015, stands for: (a) Sea And Gulf Asian Region (b) Security and Growth for All in the Region (c) Strategic Alliance for Greater Asian Regions (d) Safe And Green Arabian Region → (b) — Security and Growth for All in the Region, announced by the PM in Mauritius in March 2015.
Q6. MAHASAGAR, invoked in the 2026 Mauritius port call, is best described as: (a) a new aircraft carrier (b) the expanded successor vision to SAGAR (c) a naval exercise with Vietnam (d) a class of submarines → (b) — MAHASAGAR (Mutual and Holistic Advancement for Security and Growth Across Regions) broadens SAGAR.
Q7. Which command serves as the training command of the Indian Navy? (a) Western Naval Command, Mumbai (b) Eastern Naval Command, Visakhapatnam (c) Southern Naval Command, Kochi (d) Andaman & Nicobar Command, Port Blair → (c) — Southern Naval Command at Kochi is the Navy's training command.
Q8. Which two Defence PSUs are most associated with building India's frigates and ASW corvettes? (a) HAL and BEL (b) MDL (Mumbai) and GRSE (Kolkata) (c) BHEL and DRDO (d) ISRO and OFB → (b) — MDL builds P-17A frigates and submarines; GRSE built the Kamorta-class corvettes.
📋 How this gets asked (PYQ pattern)
Naval current affairs is a recurring NDA GAT lane, and it gets asked in predictable ways: match the warship to its class/builder/role (frigate vs corvette vs destroyer; indigenous vs imported), locate the naval commands and their HQs (Western–Mumbai, Eastern–Visakhapatnam, Southern–Kochi, plus Andaman & Nicobar–Port Blair as the tri-service command), and decode the doctrine acronyms — SAGAR, MAHASAGAR, Indo-Pacific, IOR, HADR. Static pairings like "Kavaratti = ASW corvette / also Lakshadweep capital" and "SAGAR announced in Mauritius, 2015" are favourite single-fact items. The fresh 2026 hook is the Eastern Fleet (Udaygiri + Kavaratti) deployment to Vietnam alongside INS Tarkash's Mauritius call — perfect "which ship/which class/which doctrine" framings, plus the elevation of India–Vietnam ties and the SAGAR-to-MAHASAGAR evolution.
Studying for NDA or CDS? Indian Navy ships, commands and the SAGAR/MAHASAGAR vision are guaranteed GK and a strong SSB lecturette and GD topic — easy marks once the ship classes, command HQs and doctrines are clear. Track our daily NDA current affairs and prepare with serving-officer faculty in the upcoming Cavalier courses in Delhi.
✍️ Written by Col Vijyanat Thakur — Veteran, Indian Army; SSB & defence-studies faculty at The Cavalier. Reviewed by the Cavalier Faculty Desk. The Cavalier, founded by ex-Army officers, has trained NDA/CDS/SSB aspirants since 2001 (Facebook · YouTube).
Source: PIB releases, 23 June 2026. Facts cross-verified.