PortWatch: Daily Transit Calls and Shipment Volumes for 28 Chokepoints

Daily transit calls and shipment volume estimates in metric tons cover 28 global maritime chokepoints. This time-series data from PortWatch tracks maritime trade flow and was last updated in March 2026.

Use Cases

• Analyzing daily trade flow fluctuations through specific chokepoints using shipment volume estimates
• Correlating maritime transit calls with global supply chain disruptions
• Modeling seasonal trends in metric tonnage across 28 key maritime routes

Strengths

• Daily temporal resolution for high-frequency analysis
• Includes shipment volume estimates in metric tons
• Covers 28 specific global maritime chokepoints

Limitations

• Shipment volumes are estimates rather than direct measurements
• Metadata does not specify the names of the 28 chokepoints included
• Column headers and schema are not explicitly defined in the source description

Provenance

Source

PortWatch

Freshness

Updated as of March 2026.

Geography

Global