Key Terms & Concepts — UPSC Mains
Strait of Hormuz
"The world's most critical energy chokepoint connecting the Persian Gulf to the Gulf of Oman, through which approximately 20% of globally traded oil transits daily."
The Strait of Hormuz is a narrow waterway between Iran to the north and Oman's Musandam Peninsula to the south, connecting the Persian Gulf to the Gulf of Oman and subsequently to the Arabian Sea and Indian Ocean. It is approximately 33 km wide at its narrowest point, with navigable shipping lanes only about 3 km wide in each direction (separated by a 3 km median). Approximately 20 million barrels of crude oil pass through the Strait daily, representing about 20% of all globally traded oil. Additionally, about 25% of global LNG trade transits through Hormuz. The strait is bordered by Iran, Oman, and the UAE. The strategic significance of Hormuz lies in the fact that most Gulf oil producers — Saudi Arabia, Iraq, Kuwait, UAE, Qatar, and Bahrain — have no alternative export route that bypasses it. Saudi Arabia's East-West Pipeline (Petroline) to the Red Sea port of Yanbu is the only significant bypass, but its capacity is limited. Any disruption to the Strait — whether through military action, mining, or blockade — would cause an immediate global oil supply shortfall, price spike, and economic crisis. This makes Hormuz a permanent flashpoint in international security and a central concern for India, which imports approximately 60% of its crude from Gulf states.
Extremely high-frequency UPSC topic across GS1 (Geography — straits, waterways), GS2 (IR — India-Gulf relations, energy security), and GS3 (Economy — oil imports, energy vulnerability). Appears in both Prelims (factual: location, dimensions, oil volume) and Mains (analytical: energy security strategy, India's response to Gulf crises).
- 1 Location: Between Iran (north) and Oman's Musandam Peninsula (south)
- 2 Width: ~33 km at narrowest; navigable lanes: ~3 km each direction
- 3 Oil transit: ~20 million barrels/day (~20% of global traded oil)
- 4 LNG transit: ~25% of global LNG trade
- 5 India's crude from Gulf: ~60% of total imports; import dependence: ~88-89%
- 6 Other critical energy chokepoints: Strait of Malacca, Suez Canal, Bab el-Mandeb, Panama Canal, Turkish Straits
- 7 India's SPR: 5.33 MMT at Visakhapatnam, Mangaluru, Padur (~9.5 days consumption)
- 8 US Fifth Fleet: Based in Bahrain; primary naval force in the region
Iran's March 2026 attack on Qatar's Ras Laffan hub disrupted not only 33% of global helium supply but also rattled oil markets, pushing Brent crude past $112/barrel and costing India an estimated $1 billion in additional import costs for March alone — illustrating Hormuz's outsized impact on India's economy.