IOS SAGAR DEPARTS CHATTOGRAM AFTER SUCCESSFUL PORT CALL IN BANGLADESH

1. At a Glance

• IOS SAGAR = Indian Ocean Ship SAGAR, a maiden Indian Navy operational outreach where a single naval platform (INS Sunayna) sails with multinational crews from Indian Ocean Region (IOR) navies [S1][S3].
• It is the operational expression of India's new MAHASAGAR vision (Mutual and Holistic Advancement for Security Across the Regions), itself an evolution of the 2015 SAGAR doctrine [S4].
• UPSC relevance: maps to India's Indo-Pacific / IOR strategy, naval diplomacy, and bilateral ties with Bangladesh [S1].

2. Why in the News

• On 10 May 2026, INS Sunayna (deployed as IOS SAGAR) departed Chattogram, Bangladesh after a port call featuring engagements with the Bangladesh Navy (BN) [S1].
• The Commanding Officer called on Commander BN Fleet (COMBAN) and Commander Chattogram Naval Area (COMCHIT); ship then sailed enroute to Colombo, Sri Lanka [S1].
• Deployment culminated with flag-in at Kochi on 20 May 2026, completing a multinational IOR tour [S3].

3. Background & Evolution

• 2015: PM Modi articulated SAGAR (Security And Growth for All in the Region) at Mauritius — India's IOR doctrine [S4].
• 2023: MAHASAGAR virtual outreach between maritime heads began, bi-annual [S4].
• March 2025: PM announced expanded MAHASAGAR framework at Mauritius [S4].
• 05 April 2025: Raksha Mantri Rajnath Singh flagged off INS Sunayna as IOS SAGAR from Karwar, Karnataka, with 44 personnel from 9 IOR nations [S2].
• 08 May 2025: First IOS SAGAR deployment concluded at Kochi after SW-IOR voyage [S4].
• 2026 deployment: Expanded to 38 personnel from 16 partner nations, including Bangladesh [S3].

4. Core Static Facts

• Platform: INS Sunayna — Indian Navy Offshore Patrol Vessel (OPV) [S2].
• Initiating Ministry: Ministry of Defence, executed by Indian Navy [S1].
• Parent vision: SAGAR (2015) → MAHASAGAR (2025) [S4].
• Sister initiative: AIKEYME — Africa India Key Maritime Engagement (exercise) [S5].
• First port call (2025 deployment): Dar-es-Salaam, Tanzania [S6].
• 2026 partner nations (16): Bangladesh, Indonesia, Kenya, Malaysia, Mauritius, Maldives, Mozambique, Myanmar, Seychelles, Singapore, South Africa, Sri Lanka, Tanzania, Thailand, Timor Leste, UAE [S3].
• 2025 partner nations (9): Comoros, Kenya, Madagascar, Maldives, Mauritius, Mozambique, Seychelles, Sri Lanka, Tanzania [S2].
• Flag-off port: Karwar (Karnataka) — base of Project Seabird [S2].
• Return port: Kochi (Southern Naval Command) [S3].

5. Multi-Dimensional Analysis

Geopolitical / Strategic - Reinforces India as Net Security Provider in the IOR amid Chinese PLA-N forays (string-of-pearls) [S4]. - Chattogram call signals defence diplomacy reset with Bangladesh post political transition; complements existing Indo-Bangla naval exercises [S1]. - Joint crewing builds interoperability without formal alliance — Indian variant of "minilateralism" [S2].

Administrative / Operational - A single OPV substitutes for multiple bilateral exchanges — cost-efficient capacity-building [S2]. - Indian Navy acts as training provider for smaller IOR navies — soft-power projection [S3].

Historical - Builds on tradition from IFR-2016 Visakhapatnam, MILAN exercises, and First Training Squadron overseas deployments [S4].

Economic (Blue Economy) - Indirect support to SAGARMALA, port-led development, and Indo-Pacific Oceans Initiative (IPOI) pillars [S4].

6. Recent Developments (last 12-18 months)

• 05 Apr 2025: Flag-off of maiden IOS SAGAR from Karwar [S2].
• May 2025: Port calls at Dar-es-Salaam, Mozambique (Nacala/Maputo); return Kochi 08 May 2025 [S6][S4].
• Mar 2025: PM unveils MAHASAGAR at Mauritius [S4].
• 2026 cycle: Port calls at Male (Maldives), Jakarta (Indonesia), Chattogram (Bangladesh, 10 May 2026), Colombo [S1].
• 20 May 2026: INS Sunayna flag-in at Kochi, deployment concluded [S3].

7. Prelims Hooks

• IOS SAGAR full form: Indian Ocean Ship — Security And Growth for All in the Region [S2].
• Ship deployed: INS Sunayna, an Offshore Patrol Vessel [S2].
• Flagged off by Raksha Mantri Rajnath Singh from Karwar on 05 April 2025 [S2].
• Maiden deployment crewed by personnel of 9 IOR nations; 44 foreign personnel [S2].
• 2026 deployment: 16 partner nations, 38 personnel [S3].
• IOS SAGAR is the operational arm of MAHASAGAR vision [S4].
• MAHASAGAR = Mutual and Holistic Advancement for Security Across the Regions; announced from Mauritius, March 2025 [S4].
• Sister Africa-focused initiative: AIKEYME (Africa India Key Maritime Engagement) [S5].
• First foreign port call (2025): Dar-es-Salaam, Tanzania [S6].
• Chattogram visit: COs called on COMBAN and COMCHIT of Bangladesh Navy [S1].
• Implementing arm: Indian Navy under Ministry of Defence (not MEA) [S1].
• Return base: Kochi (Southern Naval Command) [S3].

8. Mains Relevance

• GS-II: India and its Neighbourhood; Bilateral groupings involving India — India-Bangladesh maritime cooperation.
• GS-III: Security challenges in maritime domain; Role of Navy.
• Possible stems: 1. "IOS SAGAR represents a paradigm shift from bilateral naval diplomacy to multilateral capacity-building in the IOR. Discuss." 2. "Evaluate the evolution of India's maritime doctrine from SAGAR (2015) to MAHASAGAR (2025)." 3. "Examine the strategic significance of Chattogram in India-Bangladesh maritime relations."

9. Related Topics to Study Next

• SAGAR doctrine (2015) — parent vision [S4].
• MAHASAGAR — virtual maritime heads outreach [S4].
• AIKEYME exercise — Africa-India maritime engagement [S5].
• MILAN, MALABAR, IBSAMAR — naval exercises in IOR.
• Indo-Pacific Oceans Initiative (IPOI) — 7-pillar Indo-Pacific architecture.
• Project Seabird, Karwar — base infrastructure underpinning deployments.
• Colombo Security Conclave — sub-regional maritime grouping (India-SL-Maldives-Mauritius).
• IORA — Indian Ocean Rim Association.

10. Common Errors / Trap Areas

• Confusing SAGAR (doctrine) with IOS SAGAR (ship deployment) and SAGARMALA (ports scheme) — three distinct items.
• Assuming MEA runs it — it is MoD/Indian Navy led [S1].
• INS Sunayna is an OPV, not a frigate or destroyer [S2].
• Number of partner nations changed: 9 in 2025 → 16 in 2026 [S2][S3].
• MAHASAGAR ≠ just "big SAGAR" — it is a formal framework announced from Mauritius, March 2025 [S4].

11. Sources

• [S1] IOS SAGAR Departs Chattogram After Successful Port Call in Bangladesh — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2260266 — (tier: 1)
• [S2] Raksha Mantri flags-off INS Sunayna as Indian Ocean Ship SAGAR from Karwar — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2119246 — (tier: 1)
• [S3] IOS SAGAR (INS SUNAYNA) Returns to Kochi After a Landmark Deployment — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2263352 — (tier: 1)
• [S4] Indian Navy Continues IOS SAGAR Initiative to Strengthen Maritime Partnership with Indian Ocean Nations — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2241628 — (tier: 1)
• [S5] Indian Navy's Maiden Initiatives of IOS SAGAR and AIKEYME — https://www.pib.gov.in/PressReleaseIframePage.aspx?PRID=2114491 — (tier: 1)
• [S6] IOS SAGAR Makes First Port Call at Dar-es-Salaam, Tanzania — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2121381 — (tier: 1)