Singapore Strait: why this chokepoint matters, which countries sit on it, and the latest Bureau coverage.
Last updated: October 2026
Bureau read: 3 countries sit on this passage; the highest-scored is Indonesia (73.44/100). A chokepoint is judged by how many navies can hold it — and by the power of those who border it.
The Singapore Strait is the narrow waterway between Singapore, Indonesia, and Malaysia, connecting the Strait of Malacca to the South China Sea. It is the eastern funnel of the Malacca chokepoint: the Malacca–Singapore system carries roughly a quarter of global oil trade, and essentially all of it passes through the Singapore Strait.
Singapore, Indonesia, Malaysia border this passage. The Bureau's page for each country shows its national power score and full profile.
The Singapore Strait is a strategic chokepoint — a narrow passage through which a large share of world trade or energy flows. A blockage or disruption here reroutes shipping, raises freight costs, and ripples into prices worldwide.
Each chokepoint carries a plain risk rating: Critical means the flow is disrupted or under direct threat; Tense means it works but pressure is building; Calm means normal operations. Ratings are reviewed every week.
The Malacca–Singapore system carries roughly a quarter of global oil trade — the Strait of Malacca alone accounts for about 23% of global petroleum liquids transit (EIA, World Oil Transit Chokepoints, 2025) — and essentially all of that flow passes eastward through the Singapore Strait.
Roughly a quarter of global oil trade and a large share of Asia–Europe container traffic pass through the Malacca–Singapore system, with the Singapore Strait as its eastern funnel.
The narrow waterway between Singapore, Indonesia (Riau Islands), and Malaysia (Johor), connecting the Strait of Malacca to the South China Sea; about 113 kilometres long.
Malacca traffic reroutes via Lombok–Makassar or Sunda — adding days and cost to Asia–Europe and Middle East–Asia flows — and Singapore, the world's second-busiest container port, is cut off.
Sources: U.S. Energy Information Administration (EIA), World Oil Transit Chokepoints (2025) — Strait of Malacca about 23% of global petroleum liquids transit. Maritime and Port Authority of Singapore — vessel traffic data. UNCTAD, Review of Maritime Transport (2024). Observation date: 11 Oct 2026.
