Chokepoint Economics
A handful of narrow maritime passages carry a share of global trade wildly disproportionate to their width. Chokepoint Economics treats that geography as a live, continuously priced balance-sheet risk — not fixed infrastructure that is simply assumed to stay open.
- The Strait of Hormuz carries roughly 20% of the world's seaborne oil, 30% of seaborne urea, and 25% of the world's polypropylene through a passage a few dozen kilometers wide.
- When Hormuz closed in 2026, war risk insurance rose from 0.15-0.25% of hull value to as high as 5-10% per voyage within weeks — the market repriced the risk before diplomacy resolved anything.
- A chokepoint that reopens is not a chokepoint that is safe. Traffic, insurance, and toll regimes normalize on separate, slower timelines, and treating a reopening headline as resolution is the single most common planning error.
The argument
Geography as a balance-sheet line item
Most network planning treats geography as fixed: the Strait of Hormuz, the Strait of Malacca, Bab el-Mandeb, and the Panama Canal are drawn on the map and assumed to stay open, the way a highway is assumed to stay paved. That assumption holds until it doesn't, and when it breaks, it breaks the pricing of everything that depended on it. The Strait of Hormuz carries roughly 20% of the world's seaborne oil, 30% of seaborne urea, and 25% of the world's polypropylene — through a passage that narrows to a few dozen kilometers. No amount of scale elsewhere in a network compensates for exposure at a chokepoint that size.
Watching the 2026 Hormuz crisis unfold in real time, dispatch by dispatch, made the mechanism visible in a way theory never does. War risk insurance premiums that cost 0.15-0.25% of hull value before the war were quoted as high as 5-10% per voyage within weeks of the first closure — long before any diplomatic resolution was in sight. The insurance market did not wait for certainty. It priced the risk immediately, and that repricing propagated into freight rates, fertilizer costs, and plastics prices within a single quarter.
Reopening is not resolution
The costliest planning error observed across the crisis was treating a reopening headline as the end of the risk. Hormuz reopened, closed, and reopened again in cycles through 2026, and each reopening carried different terms — a different toll regime, a different insurance floor, a different set of vessels excluded. Traffic volume, insurance pricing, and political durability normalize on three separate timelines, and an operator that resumes full exposure the moment a headline says "open" is planning on the fastest of the three, which is almost always wrong.
“The insurance market does not wait for diplomats. Neither should your network plan.”
Redundancy is the only real hedge
During the Hormuz closure, Saudi Arabia's expanded east-west pipeline to the Red Sea port of Yanbu diverted roughly 4.5 million barrels per day around the Strait entirely — a hedge built years before the crisis, not during it. That is the pattern: the operators who suffered least were the ones who had already built a second path, not the ones who reacted fastest once the first one closed.
What it looked like in practice
This framework is built directly from tracking the Strait of Hormuz crisis dispatch by dispatch through 2026 — the full chronological record is in Dispatches. The pattern held across every cycle: markets repriced risk within days of a closure, reopenings were provisional rather than final, and the operators with a pre-built alternate route absorbed the shock that operators without one did not.
How to apply it
- Map every chokepoint your network or supply chain depends on, and quantify the share of volume, not just revenue, that runs through each one.
- Build a standing reroute and insurance-cost scenario for each chokepoint before a crisis starts, so it is a lookup, not a scramble.
- Treat any "reopening" as provisional until traffic volume, insurance pricing, and political terms all normalize independently.
- Fund at least one physical alternate route or mode for your highest-exposure chokepoint, even if it is more expensive in normal conditions.
- Track insurance and toll pricing on your key chokepoints continuously, not just during an active crisis — the market's repricing is often the earliest signal available.