THE GEOGRAPHY
The Strait of Hormuz sits between Iran and Oman, with Iran's coastline running the entire northern edge. The deepest shipping channels hug the Iranian side — which is why coastal missile batteries on Iranian soil can range every inbound and outbound tanker without leaving territorial waters.
THE BOTTLENECK
Hormuz is 33 km wide at its narrowest, but the shipping lanes are just 3 km each — two inbound, two outbound, separated by a 3 km buffer. Roughly a fifth of global oil consumption transits this corridor daily.
WHY UNDERGROUND MATTERS
Iran has spent two decades burrowing missile launch infrastructure into mountains along its Gulf coast — tunnels deep enough to defeat conventional bunker-busters. Surface launchers can be destroyed in a single sortie; tunneled launchers must be sealed entry-by-entry, and the missiles emerge only to fire.
THE ANTI-SHIP ARSENAL
Iran's coastal force is built around the Noor and Qader (Chinese C-802 derivatives) and the longer-range Ghadir, plus the Khalij Fars anti-ship ballistic missile. The mix matters: cruise missiles fly low and slow, ballistic missiles arrive in minutes from steep angles. Defending against both simultaneously is the hard problem for any carrier group.
THE TANKER WAR PRECEDENT
From 1984 to 1988, Iran and Iraq attacked over 400 commercial ships in the Gulf. Oil prices spiked briefly but markets adapted — tankers were reflagged under US and Kuwaiti flags and escorted by warships. The lesson planners took: disruption is easier to threaten than to sustain.
THE INSURANCE CHOKEPOINT
Lloyd's of London war-risk premiums — not the missiles themselves — are what close a shipping lane. Once underwriters reclassify a route as a war zone, premiums can rise tenfold within days; commercial vessels reroute regardless of how many missiles actually remain operational.
WHY BYPASS DOESN'T WORK
Saudi Arabia's East-West Pipeline (5 million bbl/day) and the UAE's Habshan-Fujairah pipeline together could reroute maybe a third of Gulf exports. The remaining two-thirds — plus virtually all Qatari LNG — has no alternative route to global markets.