{
  "slug": "tt009.gateway.calls",
  "name": "Completed port calls by gateway",
  "unit": "calls",
  "horizon": "short",
  "grade": "observed",
  "grade_means": "We watched it happen: our own AIS receivers (via the aisstream.io terrestrial network), our timestamps, our archive.",
  "description": "Container-class port calls reconstructed from position and speed. Government sealift and hulls the registry identifies as bulk carriers, car carriers or ro-ros are excluded.",
  "instrument": {
    "id": "TT-009",
    "name": "Berth queueing",
    "clock": "fast",
    "role": "reporter",
    "source": "Own AIS receivers, via the TT-001 archive",
    "source_url": "https://ais.trimtabist.com/gateways"
  },
  "coverage": {
    "from": "2026-07-26",
    "to": null
  },
  "publishable_ranges": [
    {
      "from": "2026-07-26",
      "to": "2100-01-01"
    }
  ],
  "status": "fit",
  "citation": "Trimtabist TT-009 Berth queueing, own AIS receivers, 10 US container gateways. Method: berthing/METHOD.md. Grade: observed.",
  "citationShort": "Trimtab TT-009 Berth queueing, \"Completed port calls by gateway\" (retrieved 2026-08-06).",
  "licence": "CC BY 4.0",
  "retrieved_at": "2026-08-06T12:49:14.305Z",
  "urls": {
    "page": "https://trimtabist.com/series/tt009.gateway.calls",
    "csv": "https://trimtabist.com/series/tt009.gateway.calls.csv",
    "metadata": "https://trimtabist.com/series/tt009.gateway.calls.metadata.json"
  }
}