Backlog building at a port

combined.port_backlog_built · Planned: built in order of demand

I want this All event types

What it is

Combined: derived from other events, listed in derived_from.

  • Example: Santos backlog: 61 ships waiting, median wait 52 hours, up 48%
  • Standard envelope; a typed payload schema comes with its first source
  • Not collected yet: ask for it and it moves up the list
Example event, standard format
{
  "specversion": "1.0",
  "id": "evt_01M5EV0NM0FNWCHEV1RW6NRR97",
  "type": "combined.port_backlog_built",
  "source": "/sources/examples/combined",
  "time": "2026-10-21T09:00:00Z",
  "observed_at": "2026-10-21T09:00:42Z",
  "dataschema": "https://schemas.worldsignals.dev/combined.port_backlog_built/1.json",
  "datacontenttype": "application/json",
  "visibility": "combined",
  "country": "BR",
  "subject": {
    "kind": "port",
    "name": "Santos",
    "ids": {
      "unlocode": "BRSSZ"
    },
    "ws_id": "ent_01M5EV0NM05JCQE4P9K1JFY8RQ"
  },
  "title": "Santos backlog: 61 ships waiting, median wait 52 hours, up 48%",
  "data": {
    "waiting": 61,
    "median_wait_hours": 52,
    "vs_30d": 0.48
  },
  "provenance": {
    "source_id": "example",
    "source_name": "Example data",
    "url": "https://example.com/worldsignals/combined.port_backlog_built",
    "licence": "Example only, not a real record",
    "method": "example"
  },
  "confidence": 0.95,
  "personal_data": false,
  "revision": 1,
  "derived_from": [
    "evt_01M5EV0NM0KNXG8JQEW3FREE5M",
    "evt_01M5EV0NM0F2FS1XA92S2P3RR8"
  ],
  "tags": [
    "example"
  ]
}

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