USCG Port State Information Exchange (PSIX)
USCG Port State Information Exchange (PSIX)
The USCG's Port State Information Exchange (PSIX) is a public search tool over Freedom of Information Act vessel data: U.S.-flag vessels, foreign vessels operating in U.S. waters, and Coast Guard contacts with those vessels, with an XLSX export covering Vessel Inspection, Vessel Operational Control and Vessel Deficiency records.
Coverage
U.S.-flag vessels, foreign vessels operating in U.S. waters, and USCG contacts with those vessels, per the PSIX help page's description of a weekly FOIA-data snapshot. The search page and XLSX export cover Vessel Inspection, Vessel Operational Control and Vessel Deficiency data. Exact field list, update day and historical depth beyond "weekly snapshot" are Not stated on the checked pages.
Verdict
This is the official USCG search and export tool for Freedom-of-Information-Act vessel inspection, operational-control and deficiency data for U.S.-flag and foreign vessels operating in U.S. waters — useful for agents screening port-state-control history and inspection risk next to the already-listed MARAD advisories and NAVCEN safety information. PSIX's help page says it "represents a weekly snapshot of Freedom of Information Act (FOIA) data on U.S. flag vessels, foreign vessels operating in U.S. waters, and Coast Guard contacts with those vessels," and its export page lets you "search and download available Vessel Inspection, Vessel Operational Control and Vessel Deficiency data" with "Downloads will export in XLSX format." No separate licence is stated on the checked pages; Signal Lab links to the official PSIX search and export tools rather than mirroring the data.
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Use in your agent
Probe USCG PSIX search, help and XLSX export pages. Checked against the provider's documentation on Nov 5, 2026.
Access
- No key for the public PSIX search, help and XLSX export pages.
Request
curl -I 'https://cgmix.uscg.mil/PSIX/PSIXSearch.aspx'Format
HTML PSIX search tool; HTML help page; ASPX export endpoint that returns XLSX.
Load into pandas and Parquet
Needs Python 3 with requests, pandas and pyarrow.
"""Check PSIX search, help and XLSX export page reachability -> pandas -> Parquet."""
import pandas as pd
import requests
UA = {"User-Agent": "SignalLabCheck/1.0"}
rows = []
for url, note in [
("https://cgmix.uscg.mil/PSIX/PSIXSearch.aspx", "PSIX search tool"),
("https://cgmix.uscg.mil/PSIX/PSIXHelp.aspx", "PSIX help page"),
("https://cgmix.uscg.mil/XML/PSIXExportSearch.aspx", "PSIX XLSX export endpoint"),
]:
r = requests.get(url, headers=UA, timeout=60, allow_redirects=True)
rows.append({"url": url, "note": note, "status": r.status_code, "bytes": len(r.content)})
df = pd.DataFrame(rows)
df.to_parquet("uscg_psix_pages.parquet", index=False)
print(df)
Run by us on 2026-11-05 (python 3 | pandas | pyarrow | requests). Result: PSIX search, help and XLSX export pages all returned HTTP 200 on 2026-11-05.
Limits
- Not stated numeric rate limit.
- This skill does not run a full vessel search or download the XLSX export; it only probes reachability.
Quirks
- PSIX is a weekly FOIA-data snapshot, not a live feed.
- The export endpoint returns XLSX, not CSV or JSON.
Terms and attribution
- No separate data licence is stated; US federal (USCG) public tool.
Sources
- https://cgmix.uscg.mil/PSIX/PSIXHelp.aspx: “PSIX represents a weekly snapshot of Freedom of Information Act (FOIA) data on U.S. flag vessels, foreign vessels operating in U.S. waters, and Coast Guard contacts with those vessels.”
- https://cgmix.uscg.mil/XML/PSIXExportSearch.aspx: “search and download available Vessel Inspection, Vessel Operational Control and Vessel Deficiency data… Downloads will export in XLSX format.”
Information and education only. Not financial, investment, legal or tax advice. Listings can be inaccurate, incomplete or out of date and are provided "as is". Free tiers, limits and licenses belong to each provider and can change, so check the provider's own terms before you rely on them. Terms & Disclaimer