Strait of Malacca

Strait of Malacca
Derives from png uploaded by User:Wolrd blank map · CC BY-SA 3.0 · source
Name	Strait of Malacca
Native name	Selat Melaka
Type	Strait
Location	Peninsular Malaysia, Sumatra, Andaman Sea, South China Sea
Length	800 km
Width	65 km
Max depth	120 m

Strait of Malacca is a narrow, strategic waterway between Peninsular Malaysia and the island of Sumatra that links the Indian Ocean with the South China Sea and the Pacific Ocean. The strait forms a maritime corridor used by major state actors such as People's Republic of China, United States, India and regional organizations including the Association of Southeast Asian Nations and the Asian Development Bank, and it has been central to historical polities like the Melaka Sultanate and the Srivijaya Empire. Its geography, history, commerce and security intersect with events such as the Anglo-Dutch Treaty of 1824, the World War II naval campaigns in Southeast Asia, and contemporary initiatives like the Belt and Road Initiative.

Geography

The strait lies between Peninsular Malaysia (states such as Perak (state), Penang, Johor) and the island of Sumatra (provinces such as North Sumatra, Riau Islands), opening into the Andaman Sea and the South China Sea, and connecting with shipping lanes to the Malacca Strait Tunnel proposals and passages toward the Strait of Singapore. Its bathymetry features shallow shelves near Bangka Island and deeper troughs adjacent to Bengkulu, with navigational chokepoints like Phillip Channel and shoals near Cape Rachado and Simeulue Island. Climatic influences include the Northeast Monsoon and Southwest Monsoon, which affect currents, visibility, and the seasonal distribution of mangrove belts such as those around Kuala Linggi and estuaries like Sungai Musi.

History

Maritime states from the Srivijaya Empire and the Majapahit Empire to the Melaka Sultanate and the Dutch East India Company contested the strait as part of trade routes linking Arabia, Persia, China, India, and later Europe. Colonial powers including the Portuguese Empire, Dutch Empire, and British Empire imposed fortifications at ports like Malacca City, Penang, and Singapore after treaties such as the Anglo-Dutch Treaty of 1824 redefined control. The strait was a strategic theater in World War II operations including the Fall of Singapore and later Cold War-era naval deployments by alliances such as NATO and regional pacts like Five Power Defence Arrangements. Postcolonial states including Malaysia, Indonesia, and Singapore have managed sovereignty, navigation rights and disputes through institutions like the United Nations Convention on the Law of the Sea and multilateral fora such as the Regional Cooperation Agreement on Combating Piracy and Armed Robbery against Ships in Asia.

Navigation and Shipping

The strait forms part of principal shipping lanes used by tankers from Saudi Arabia, bulk carriers from Australia, container vessels operated by lines such as Maersk, MSC, and COSCO, and LNG carriers servicing terminals in Japan, South Korea, and China. Traffic density is regulated by authorities in Singapore, Malaysia Maritime Enforcement Agency, and Indonesia, with traffic separation schemes near Singapore Strait and pilotage services at ports like Port of Tanjung Pelepas and Port of Singapore. Accidents and incidents have involved crude oil tankers such as those managed by BP and ExxonMobil, leading to navigational risk assessments by organizations including the International Maritime Organization and insurance underwriters like Lloyd's of London.

Economy and Trade

The corridor carries a significant share of global trade, including shipments of crude oil from Persian Gulf producers, coal from Indonesia, palm oil from Sabah, and manufactured goods from China and Japan to markets in Europe and United States. Major ports such as Port of Singapore, Port Klang, and Belawan anchor regional supply chains linking manufacturers like Samsung, Toyota, and Foxconn with retailers including Walmart and Amazon (company). Economic initiatives including the Trans-Pacific Partnership discussions, Asian Infrastructure Investment Bank financing, and regional trade agreements like the Regional Comprehensive Economic Partnership influence throughput and investments in terminals, shipyards, and logistics hubs such as Tanjung Priok and Batam.

Security and Piracy

Security concerns have involved naval and coast guard forces of Indonesia, Malaysia, Singapore, India, and United States conducting patrols, exercises like Exercise Malabar, and cooperation under mechanisms such as the Information Sharing Centre at Changi Naval Base. Piracy and armed robbery historically engaged networks linked to Somalia-style attacks elsewhere and prompted counter-piracy measures by private security firms, flag states, and insurance groups like International Chamber of Shipping and BIMCO. Maritime interdictions have involved multilateral actions coordinated through bases such as Andaman and Nicobar Command and assets from navies including Royal Australian Navy, People's Liberation Army Navy, and United States Navy.

Ecology and Environment

The strait's ecosystems include mangrove forests near Penang National Park, coral communities around Pulau Sambu, and fisheries exploited by communities in Riau Islands and Selangor. Environmental pressures arise from shipping-related oil spills affecting biodiversity hotspots like Banda Sea migratory routes, land reclamation in Singapore, and deforestation linked to palm oil plantations in Sumatra that impact sedimentation and coral reef health monitored by organizations such as World Wide Fund for Nature and IUCN. Climate change impacts considered by agencies like the Intergovernmental Panel on Climate Change include sea-level rise, altered monsoon patterns, and acidification that affect mangrove carbon sequestration and fisheries supporting populations in Medan, George Town, and Malacca City.

Infrastructure and Development

Infrastructure projects include major ports such as Port of Singapore, container terminals at Port Klang, and proposed engineering works like the Malacca Strait Tunnel and pipeline corridors linking to refineries in Rangkasbitung and storage hubs in Pulau Bukom. Regional development initiatives involve investment from entities such as the Asian Development Bank, sovereign wealth funds like Khazanah Nasional, and multinational consortia including PSA International and Keppel Corporation. Urban and transport planning in coastal centers like Johor Bahru, Batam, and Medan integrates port expansion, free trade zones, and environmental mitigation overseen by national ministries including Ministry of Transport (Malaysia), Ministry of Transportation (Indonesia), and agencies such as the Maritime and Port Authority of Singapore.

Category:Straits of Asia