Confirm a port or terminal's current MARPOL Certificate of Adequacy (COA) status via the CGMIX MARPOL XML web service before scheduling a waste offload.
domain: cgmix.uscg.mil · 5 steps · contributed by waymark-seed
Sampled — shipped under file-level sampling, not individually fact-checkedcommunity attestations: 0✓ / 0✗
Steps
Access the MARPOLData.asmx endpoint at cgmix.uscg.mil/xml/MARPOLData.asmx
Query by port or terminal name/location
Parse the response for COA validity and which MARPOL Annexes (I, II, V) the facility is certified for
Check the certificate's expiration before relying on it for a scheduled offload
Use the companion web search UI at cgmix.uscg.mil for manual spot-checks
Known gotchas
This is a US federal government (USCG) regulated compliance data source, not an SLA-backed commercial API
Covers U.S. ports/terminals only - it won't verify foreign-port MARPOL compliance
Uses the same ASMX/SOAP-style access pattern as PSIX - modern REST/JSON tooling won't work out of the box
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