Data Sources & Methodology
Data refreshed 2026-10-11T20:35:08Z · quarterly refresh cycle
ExportSonar’s port directory is built from the IMF PortWatch ports layer: daily vessel-presence counts by ship class, dominant cargo industries and each port’s share of national maritime imports/exports.
| Upstream sources | Kpler; UN Global Platform; IMF PortWatch |
|---|---|
| Records | 1,380 ports × 23 fields |
| Refresh cadence | Quarterly rebuild via an idempotent pipeline; every record keeps source_url and fetched_at |
| Geometry | Field-subset of the published PortWatch ports layer; point geometry dropped, lat/long kept as attributes. |
| Commercial reuse | Contact copyright@imf.org |
Redistribution terms we operate under
- Attribution: the short-form citation appears next to every data block and the full block appears in each page footer.
- Integrity: fields are republished as extracted; derived numbers are computed in-page from those fields.
- Downstream pass-through: the same obligations accompany any downstream use.
- Full license text: IMF Copyright & Usage — special terms for published statistical data (attribution required).
Port data — Sources: Kpler; UN Global Platform; IMF PortWatch (portwatch.imf.org). Reused under the IMF Copyright & Usage terms. Fields subsetted (geometry omitted); see our data sources note. The IMF is not affiliated with and does not endorse ExportSonar.
Sources: Kpler; UN Global Platform; IMF PortWatch (portwatch.imf.org).