Chokepoint Tracker

Strategic Maritime Intelligence — Prisoners of Geography
Critical
High
Medium
Low
Chokepoints 15
~60% global trade at risk
Closure Sim
Oil disrupted
0%
⚓

Select a Chokepoint

Click any marker on the map to access the strategic intelligence brief for that maritime chokepoint.


Geography is the original geopolitics.
— Tim Marshall

Events
Ref: Prisoners of Geography — Tim Marshall (2015)
Data Sources
Disclaimer This tool is for educational and analytical purposes only. All data is curated from open-source references and is static — figures represent approximate values at time of publication and should not be used for operational, commercial, or policy decisions. Strategic assessments reflect the analytical framework of the cited sources, not official government positions.
Primary Reference
Prisoners of Geography — Tim Marshall (2015)
Primary analytical framework for all strategic briefs, stakeholder assessments, and closure scenarios. All "ref" fields cite specific chapters. Elliott & Thompson / Scribner.
Energy & Trade Data
US Energy Information Administration (EIA)
Oil throughput figures (bbl/day), global share percentages, and chokepoint trade flow estimates. eia.gov/international/analysis
International Energy Agency (IEA)
Cross-reference for energy security statistics and import dependency figures. iea.org
UNCTAD / World Bank Trade Statistics
Global trade share estimates and shipping lane utilisation figures.
Maritime & Navigation Data
IMO & BIMCO
Navigable width and minimum depth figures for each passage. International Maritime Organization and Baltic and International Maritime Council.
Admiralty Charts / NOAA
Cross-reference for geographic coordinates and channel dimensions.
Historical Incidents
Open-source news archives & academic sources
Incident dates, durations, and impact figures sourced from contemporaneous reporting (Reuters, Lloyd's List, AP) and academic papers. Ever Given cost estimate: Lloyd's List Intelligence (2021). Houthi impact: UNCTAD Transport Newsletter (2024).
Map & Visualisation
Natural Earth / world-atlas@2
110m resolution country boundaries via TopoJSON. naturalearthdata.com
D3.js v7 & TopoJSON v3
Map rendering and geographic projection (Natural Earth). d3js.org