Data supporting the paper 'Systemic impacts of disruptions at maritime chokepoints' by Verschuur, Lumma and Hall (2025), Nature Communications: https://www.nature.com/articles/s41467-025-65403-w The data includes: -The country maritime import/export dependency on these 24 chokepoints, derived from 2022 trade data. -The final results for the 'expected value of trade disrupted' and 'economic risk' metrics. -The code to re-run the analysis. ### Updated version ### There was an error in the original maritime import/export dependencies on chokepoints, so a revised version is uploaded.