Indo-Pacific

Geography glossary

Also called: Indo-Pacific region · Topic: India and her Neighbours · NCERT: Beyond NCERT

Meaning

The Indo-Pacific is the large sea and coastal region where the Indian Ocean and the Pacific Ocean meet. It is joined by straits such as Malacca, Sunda and Lombok. India wants this region to be "secure, open, inclusive, resilient and rule-based".

  • Why it matters: most of India's trade travels on these seas.
  • The region also includes India's island territories, its maritime neighbours and the main chokepoints of Asian shipping.
  • So it is the base of India's maritime diplomacy and its Act East outreach.

Explanation

How two oceans became one strategic region

  • Geography joins the two oceans.
  • Ships from the Indian Ocean reach the Pacific mainly through the Malacca Strait. Sunda and Lombok are the other routes.

  • Indonesia (over 17,000 islands) and the Malay peninsula lie between the two oceans.

  • Trade and security tie them together.

  • SLOCs (Sea Lines of Communication) are the sea routes that carry trade. Oil from the Gulf and goods from East Asia move along the same chain of sea lanes.

  • If one chokepoint is blocked, countries on both oceans suffer. That is why they are treated as one region.

  • Result: "Indo-Pacific" is a strategic idea that leaders use to plan policy. No treaty or law sets its limits.

India's vision: its main parts

  • Rule of law at sea. India bases maritime order on UNCLOS (the UN Convention on the Law of the Sea). This includes freedom of navigation and overflight, meaning ships may sail and aircraft may fly freely over international waters.
  • Not aimed at anyone. India says this position is "not directed against any country".
  • ASEAN centrality. India accepts that ASEAN stays at the centre of the region's security arrangements.
  • Net security provider. India says it gives security to other countries in the IOR (Indian Ocean Region) and the wider Indo-Pacific, not only to itself. This is how India describes itself. No treaty grants it the role.
  • Proof through action. The Indian Navy has patrolled the Gulf of Aden since 2008. It escorts merchant ships of any flag.

The building blocks: chokepoints, islands, neighbours

  • Chokepoints (narrow sea passages that much shipping must use):
  • Strait of Hormuz and Bab-el-Mandeb in the west.
  • Malacca Strait in the east.

  • The Six, Nine, Ten and Eight Degree channels, and the Coco Channel.

  • Island bases:

  • The Andaman and Nicobar Islands sit on the approach to Malacca.

  • Lakshadweep (Minicoy) looks over the Eight Degree Channel.

  • Maritime neighbours: India shares sea boundaries with Sri Lanka, Maldives, Indonesia, Thailand, Myanmar, Bangladesh and Pakistan.

  • Old links: Indian traders reached Suvarnabhumi/Suvarnadvipa (Java, Sumatra and Malaya) from a few centuries BCE. Today's Act East policy builds on these links.

What the idea needs to work

  • Open chokepoints and accepted sea law (UNCLOS).
  • Ports and connectivity projects that partners can use.
  • Regional groups: IORA (1997), BIMSTEC (1997) and ASEAN-led forums such as ADMM-Plus (ASEAN Defence Ministers' Meeting-Plus).

Where it occurs

  • Western edge:
  • Strait of Hormuz and the Gulf of Oman. Chabahar port (Iran) is here.
  • Bab-el-Mandeb and the Gulf of Aden, where the Indian Navy has patrolled since 2008.

  • Oman is India's closest Gulf defence partner.

  • India's own waters:

  • Lakshadweep and Minicoy, with the Eight Degree Channel to the Maldives (about 130 km).
  • The Palk Strait and Gulf of Mannar towards Sri Lanka.

  • The Andaman and Nicobar Islands. Indira Point is about 150 km from Indonesia across the Six Degree Channel.

  • Bay of Bengal links: the Kaladan project (Kolkata to Sittwe in Myanmar). The Bay of Bengal sea boundary with Bangladesh was settled by arbitration in 2014.

  • Eastern gateway: the Malacca, Sunda and Lombok straits. Beyond them lie Singapore, Malaysia, Thailand and Indonesia.
  • Pacific side: ASEAN states and the wider Pacific. India's partners there include South Korea and the US, and it meets them at ASEAN-led forums such as ADMM-Plus.
  • Disaster link: the 2004 tsunami hit the whole eastern Indian Ocean. After it, India set up the Indian Tsunami Early Warning Centre at INCOIS, Hyderabad (working from 2007).

Don't confuse with

  • Asia-Pacific: an older term centred on the Pacific and East Asia. Indo-Pacific adds the Indian Ocean, which puts India inside the region instead of at its edge.
  • Indian Ocean Region (IOR): only one ocean, and smaller. India calls itself a net security provider in the IOR and the wider Indo-Pacific.
  • "String of Pearls": the name for Chinese-linked ports around India: Gwadar, Hambantota and Kyaukphyu. It describes one country's ports, not a region or a vision.
  • ADMM vs ADMM-Plus: ADMM has only ASEAN members. ADMM-Plus adds partner countries such as India. Both are forums within the Indo-Pacific. Neither is the region itself.

Prelims Hooks

  • The Six Degree Channel separates Great Nicobar from Sumatra. The Eight Degree Channel separates Minicoy from the Maldives.
  • The Andaman and Nicobar Islands lie on the approach to the Malacca Strait. Sunda and Lombok are the other routes between the two oceans.
  • India's legal basis for freedom of navigation and overflight is UNCLOS.
  • The Indian Navy has had a continuous presence in the Gulf of Aden since 2008, escorting ships of any flag.
  • IORA and BIMSTEC were both set up in 1997. BIMSTEC's charter came into force in 2024.
  • Trap: "The Indo-Pacific's boundaries are fixed by a treaty." This is FALSE. It is a strategic idea, and countries define it differently.

Mains Points

  • Chokepoints and islands make geography a strategic asset.
  • Hormuz, Bab-el-Mandeb, Malacca and the degree channels carry the trade that India and its partners depend on.

  • The Andaman and Nicobar Islands and Lakshadweep let India watch over these routes. This is the basis of its net security provider claim.

  • Connectivity and old ties add depth to the sea vision.

  • Chabahar (west), Kaladan and the Trilateral Highway (east), and centuries of trade with Suvarnabhumi link sea strategy to land routes and to culture.

  • Projects slowed by sanctions or conflict (Chabahar, Myanmar) show the limits of this approach.

  • Shared risks need shared responses.

  • The 2004 tsunami and rising seas (the Maldives may face a 1 m rise by 2100) affect the whole region.
  • Early-warning systems (INCOIS), disaster relief and sea law (UNCLOS) make the Indo-Pacific a field for cooperation, not only for rivalry.

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