The Strait of Malacca has become the world’s largest oil transit chokepoint by volume, surpassing the Strait of Hormuz[s]. In the first half of 2025, some 23.2 million barrels of oil per day flowed through this narrow passage between Malaysia and Indonesia, accounting for 29 percent of total maritime oil flows[s]. With Iran’s closure of Hormuz redirecting global attention toward alternative routes, the Strait of Malacca now stands at the intersection of great-power competition, energy security, and the fragility of globalized trade.
The Strait of Malacca stretches roughly 900 kilometers from the Malay Peninsula to the Indonesian island of Sumatra. At its narrowest point, the Phillips Channel near Singapore, the waterway is barely 2.8 kilometers wide[s]. This geographic pinch point creates a natural bottleneck through which nearly a quarter of all global seaborne trade must pass.
The numbers illustrate why the Strait of Malacca matters in any discussion of maritime chokepoints. Almost 24% of global seaborne trade by volume flows through the strait, carrying 45% of the world’s seaborne oil, over 25% of all internationally traded cars, and 23% of dry bulk cargo including grains and soybeans[s]. More than 102,500 ships transited the strait in 2025, up from around 94,300 in 2024[s].
Singapore, positioned at the strait’s southern entrance, is one of the world’s leading container ports and ship refueling hubs. The city-state handled 44.66 million TEUs of container throughput in 2025, while marine fuel sales reached 56.77 million tonnes[s]. This concentration of infrastructure makes the strait difficult to replace in ways that other maritime passages are not.
Unlike the Suez Canal, which ships can bypass via the Cape of Good Hope at significant but manageable cost, the Strait of Malacca has no practical substitute. The most commonly cited detours, the Sunda and Lombok Straits, both lie within Indonesian territory and neither offers a straightforward replacement. Rerouting through either passage adds roughly 1,000 to 1,500 nautical miles to a voyage, translating to three to five extra days at sea[s]. Ships would also lose access to Singapore’s refueling infrastructure and transshipment networks.
The Torres Strait near Papua New Guinea is too shallow for large commercial vessels with drafts over 12 meters. Ships avoiding all Indonesian routes would face a detour around the entire Australian continent, adding 10 to 15 additional days of transit time[s]. These geographical facts explain why naval strategists have long viewed Malacca as a decisive node in global trade architecture.
China has an especially large stake in the Strait of Malacca. In 2003, then-President Hu Jintao coined the phrase “Malacca dilemma” to describe his country’s strategic vulnerability to disruption of this single maritime corridor[s]. That vulnerability remains significant. Around 75 percent of China’s seaborne crude oil imports still pass through the strait from the Middle East and Africa[s].
In value terms, roughly one-fifth of global maritime trade transits the Taiwan Strait and the Strait of Malacca combined, underscoring their central role in linking East Asia to Europe and the Middle East[s]. For Malacca specifically, 24% of China’s maritime exports and 37% of its maritime imports pass through the strait[s]. China’s energy security depends heavily on this single passage.
Beijing has invested heavily in alternatives. Pipelines running from Kyaukpyu in Myanmar into Yunnan province bypass the strait entirely, but their capacity is only around 440,000 barrels per day, a small fraction of China’s roughly 11 million barrels of daily oil imports[s]. The China-Pakistan Economic Corridor plans to link Gwadar Port on the Arabian Sea to Xinjiang through road, rail, and energy infrastructure, but it remains only partially developed. Arctic shipping routes along Russia’s northern coast offer a longer-term hedge but remain seasonal and marginal in global trade terms[s].
The current crisis in the Middle East has accelerated US strategic positioning around the Strait of Malacca. On April 14, 2026, the United States and Indonesia announced a major defense cooperation partnership[s], strengthening military ties, while separate reports said Washington was seeking overflight access to Indonesian airspace[s].