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Shipping chokepoints after eighteen months of Red Sea diversion

The Bab el-Mandeb strait seen from mid-channel, with Yemen in the distance
The Bab el-Mandeb strait seen from mid-channel, with Yemen in the distance.Photo: Richard Weil, CC0, via Wikimedia Commons

Eighteen months after Houthi attacks began in November 2023, energy shipping still carries the scar tissue. EIA measured Bab el-Mandeb oil flows at 4.0 million barrels per day through August 2024 versus 8.7 million in 2023, with Cape flows up to 9.2 from 6.0 million barrels per day. Kpler documented the halt of Bab el-Mandeb LNG transits by February 2024 and noted that only 8% of global LNG had used the Red Sea in the year before October 2023. Those facts have not been repealed by familiarity. Longer routes remain a tax on landed costs and a reduction in effective fleet capacity.

Hormuz continues to dwarf Bab el-Mandeb as a volume risk. EIA's 2023 figures of 20.9 million barrels per day of oil and about one-fifth of global LNG through Hormuz remain the planning anchors until newer annual prints supersede them. Red Sea risk lengthens Asia-Europe voyages; Hormuz risk threatens Gulf loadings themselves. Separate lines on the risk register remain mandatory.

July 2025 is also when Northern Hemisphere storage refill for the next winter coincides with tropical storm risk in the Atlantic LNG export region and with maintenance seasons. Chokepoint planning that ignores weather and maintenance will understate joint tails. Transition hardware in containers faces the same corridor choices as crude. Energy security and transition logistics share a merchant fleet.

Market participants should also keep an eye on inventory quality, not only inventory quantity. Contango and backwardation, floating storage economics, and the location of stocks relative to demand centres determine whether a headline surplus is actually available to distressed buyers in a given week. The same discipline applies to gas storage fill percentages, coal port stocks, and mineral warehouse receipts. Headline ratios without location and quality context are how desks get blindsided.

Cross-checks against multiple agencies remain essential. Producer organisations, consumer agencies, shipping analytics firms and regulators often describe the same physical system with different residual assumptions. The professional response is triangulation, not allegiance to a single dashboard. Where numbers in this piece appear, they are taken from pages that were opened and are listed at the end of the article.

For emerging-market importers, bill management is energy security. Hedging, storage, demand efficiency and fuel-switching options reduce the welfare cost of global shocks. For exporters, credibility of contract delivery and of production policy is a commercial asset. For transit states, corridor stability is fiscal and geopolitical capital. Each role implies different investments; all of them imply honesty about physical constraints.

The Transition Economics Institute tagline, Making the transition add up, is used here as an engineering standard rather than a slogan. Addition means connecting megawatts to molecules, molecules to voyage days, voyage days to bills, and bills to political tolerance. It also means connecting climate targets to mineral tonnes and grid lead times. Articles that celebrate only one side of that arithmetic are incomplete.

Second-order couplings deserve routine attention: power prices feeding industrial gas demand; Chinese LNG swings releasing or absorbing Atlantic cargoes; coal import cycles altering dry-bulk freight; mineral export controls raising equipment costs for the renewables that cut fossil demand. Systems thinking is the minimum professional standard for energy policy advice in this decade. Scenario tables should show joint tails, not only single-factor shocks, because regional politics can move oil, gas freight and mineral logistics together.

Risk communication to non-specialist audiences should separate three layers: the physical flow change, the price transmission channel, and the policy response option. Mixing those layers produces either panic or complacency. Physical barrels can still arrive while prices spike on freight and risk premia. Prices can fall while security margins thin. Policy can spend money on the wrong buffer. Clear layering keeps cabinet discussions usable.

Data hygiene is part of engineering culture. Report units. Name the year. Distinguish thermal from metallurgical coal, spot from contracted LNG, crude from products, mined ore from refined metal. Conflations that sound fluent in conversation become errors in investment memos. The authors of this series treat that hygiene as non-negotiable.

Governance timelines should be mapped beside price charts on the same page. A ministry that watches only the front-month contract will miss the compliance meeting, the storage mandate deadline, the interconnection outage, and the mineral licensing decision that actually move the medium-term balance. Equally, a ministry that watches only targets without landed-cost feedback will design politically brittle pathways. The craft is to keep both views active in the same weekly pack.

Seasonality still disciplines the calendar. Winter gas and power stress tests differ from summer peak-cooling tests. Refinery maintenance seasons change product balances. Monsoon logistics affect coal discharge in South Asia. Harvest and industrial cycles shift diesel. A global energy note that ignores the clock will mis-order its warnings. The authors therefore date each piece not as decoration but as a positioning statement inside the seasonal and institutional year.

Week-to-week monitoring beats annual manifesto writing. Update the balance sheet when the data update. Retire narratives that the numbers have already retired. That habit separates analysis from advocacy theatre.

Sources

  • Fewer tankers transit the Red Sea in 2024, U.S. Energy Information Administration eia.gov
  • Update on Red Sea trade flow impacts, Kpler kpler.com
  • Red Sea attacks increase shipping times and freight rates, U.S. Energy Information Administration (DOE-hosted PDF) energy.gov