World Trade Routes and Strategic Energy Chokepoints

International trade in oil and gas moves overwhelmingly by sea, and a handful of narrow straits, canals and the pipelines built to bypass them carry a wholly disproportionate share of that traffic. The US Energy Information Administration tracks these as world oil transit chokepoints precisely because a closure at any one of them, whether from conflict, an accident or deliberate blockade, has no easy full substitute, and UPSC has already tested the specific pairing of the Suez Canal with its purpose-built pipeline alternative.

The Sumed pipeline: Suez's own backup route

The Suez Canal connects the Red Sea to the Mediterranean, but it cannot be widened or deepened indefinitely, and it has been closed by conflict and blockage before (most visibly in 2021, when a single grounded container ship shut it for six days). The Sumed pipeline (Suez-Mediterranean Pipeline) exists exactly to give oil tankers a second route: its own operator's facilities page describes it as running 320 kilometres overland across Egypt through twin 42-inch pipelines, carrying crude oil from the Red Sea terminal at Ain Sukhna to the Mediterranean terminal at Sidi Kerir via a boosting station at Dahshour. The EIA puts its capacity at 2.5 million barrels a day. A very large crude carrier too big to transit the Suez Canal loaded can offload part of its cargo, transit the canal at a lighter draft, and take the oil back on at the other end, or route the crude through Sumed entirely instead of the canal. Both the canal and the pipeline are described by the EIA as strategically critical for the same underlying reason: Persian Gulf oil bound for Europe has no other short sea route, so both the canal and its pipeline backup, together, are what keep that route open when either one alone cannot cope.

The world's other named chokepoints

The Sumed-Suez pair is one of several chokepoints the EIA tracks by name, and UPSC's own pattern of testing (statement-based, location-and-purpose matching) rewards knowing the set rather than just the one already asked. The Strait of Hormuz, between Iran and Oman, is the world's single most important oil chokepoint by volume, the only sea route out of the Persian Gulf. The Strait of Malacca, between Indonesia and Malaysia, is the shortest sea route linking Persian Gulf oil suppliers to the major Asian markets of China, Japan and South Korea. The Bab el-Mandeb Strait, between Yemen and the Horn of Africa, sits at the southern end of the Red Sea and feeds traffic headed for the Suez Canal and Sumed pipeline from the Indian Ocean side, making it and the Suez-Sumed pair two links in the same chain rather than independent alternatives. The Turkish Straits (the Bosporus and Dardanelles) are the only sea outlet for oil from Russia's and the Caspian region's Black Sea ports, and the Danish Straits perform the equivalent role for the Baltic. The Panama Canal, unlike the others, is a chokepoint for trade generally rather than oil specifically, and ships too large to fit it have the Cape of Good Hope's much longer route around Africa as their only alternative, exactly as the Cape route is also the fallback when the Suez-Sumed corridor itself is disrupted.

Quick revision points

• Sumed pipeline: 320 km, twin 42-inch lines, Ain Sukhna (Red Sea) to Sidi Kerir (Mediterranean) via a boosting station at Dahshour, 2.5 million barrels/day capacity, Egypt's overland alternative to the Suez Canal for oil that cannot or should not transit the canal itself.
• Suez Canal and Sumed together are treated as one strategic corridor for Persian Gulf oil headed to Europe, since neither alone can absorb the other's full disruption.
• Strait of Hormuz (Iran-Oman): the only outlet from the Persian Gulf, the world's most important chokepoint by oil volume.
• Strait of Malacca (Indonesia-Malaysia): shortest sea link from the Persian Gulf to China, Japan and South Korea.
• Bab el-Mandeb (Yemen-Horn of Africa): feeds Red Sea traffic into the Suez-Sumed corridor from the Indian Ocean side.
• Turkish Straits (Bosporus, Dardanelles): the only sea outlet for Black Sea oil (Russia, Caspian region); Danish Straits play the same role for the Baltic.
• Panama Canal: a general trade chokepoint, not oil-specific; the Cape of Good Hope route is the fallback when either it or the Suez-Sumed corridor is disrupted.