The World’s Major Shipping Routes and Chokepoints

Ocean trade does not spread evenly across the seas. It is funnelled along a handful of trunk routesconnecting the world’s manufacturing and consuming regions, and those routes depend on a few narrow chokepoints — canals and straits where a huge share of global shipping is squeezed through a passage only a few kilometres wide. Understanding them explains a lot about why certain ports became powerful and why a single blockage can disrupt supply chains worldwide.

The main trunk routes

• Asia – Europe: from East Asian factories through the South China Sea, the Strait of Malacca, across the Indian Ocean and through the Suez Canal into the Mediterranean and Northern Europe.
• Transpacific: East Asia to the west coast of North America — one of the busiest container lanes in the world.
• Transatlantic: Europe to the east coast of the Americas.
• Bulk and energy routes: oil from the Persian Gulf, ore and coal from Australia and Brazil, grain from the Americas — long hauls that shape tanker and bulk-carrier trade.

The great chokepoints

A few passages carry an outsized share of this traffic:

• Suez Canal (Egypt): the shortcut between Europe and Asia that saves ships the long voyage around Africa. Its 2021 blockage by a single grounded container ship held up hundreds of vessels and made headlines worldwide.
• Strait of Malacca:the narrow channel between Malaysia and Indonesia linking the Indian and Pacific Oceans — the main artery for Asia–Europe and Middle East–Asia trade.
• Panama Canal:the lock canal joining the Atlantic and Pacific. Its dimensions defined the “Panamax” ship class; larger “Neopanamax” locks opened in 2016.
• Strait of Hormuz:the only sea route out of the Persian Gulf, through which a large share of the world’s seaborne oil passes.
• Bab-el-Mandeb: the strait between the Red Sea and the Gulf of Aden, the southern gateway to the Suez route.
• The Capes:the Cape of Good Hope and Cape Horn — the long way around, used by ships too large for the canals (hence “Capesize”) or when a canal route is disrupted.

Why chokepoints matter

Because so much trade depends on them, chokepoints are economic and strategic pressure points. Congestion, drought (which has limited transits through the Panama Canal), conflict or a single accident can force ships onto longer routes — adding days or weeks of sailing, raising freight rates and tightening vessel availability everywhere. A diversion around the Cape instead of through Suez can add roughly 10 days to an Asia–Europe voyage.

Routes, chokepoints and ports

The biggest ports tend to sit on or near these arteries. Transhipment hubs grow up beside chokepoints — Singapore beside the Strait of Malacca, for example — because it is efficient to consolidate cargo where the routes converge. When you look at a port’s location and the major ports listed near it, you are really looking at its place in this network. Each port page here estimates great-circle distances to nearby and major ports, and you can browse the world’s major ports to see how the busiest gateways cluster along the trunk routes.