{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://api-evangelist.github.io/port-community-systems/json-schema/portbase-vessel-call-schema.json",
  "title": "Portbase Vessel Call",
  "description": "Schema for a vessel call notification in the Portbase Port Community System, representing a vessel's arrival at a Dutch port.",
  "type": "object",
  "properties": {
    "vesselCallId": {
      "type": "string",
      "description": "Portbase system-generated vessel call identifier"
    },
    "imoNumber": {
      "type": "string",
      "pattern": "^\\d{7}$",
      "description": "IMO vessel identification number (7 digits)"
    },
    "mmsi": {
      "type": "string",
      "pattern": "^\\d{9}$",
      "description": "Maritime Mobile Service Identity (9 digits)"
    },
    "vesselName": {
      "type": "string",
      "description": "Official vessel name"
    },
    "callSign": {
      "type": "string",
      "description": "Radio call sign"
    },
    "flag": {
      "type": "string",
      "maxLength": 3,
      "description": "ISO 3166-1 alpha-3 flag state code"
    },
    "portCode": {
      "type": "string",
      "description": "UN/LOCODE of the destination port (e.g., NLRTM)"
    },
    "terminalCode": {
      "type": "string",
      "description": "Terminal code within the port"
    },
    "status": {
      "type": "string",
      "enum": ["EXPECTED", "ARRIVED", "BERTHED", "DEPARTED", "CANCELLED"],
      "description": "Current vessel call status"
    },
    "eta": {
      "type": "string",
      "format": "date-time",
      "description": "Estimated time of arrival (UTC)"
    },
    "etd": {
      "type": "string",
      "format": "date-time",
      "description": "Estimated time of departure (UTC)"
    },
    "ata": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "Actual time of arrival (UTC)"
    },
    "atd": {
      "type": ["string", "null"],
      "format": "date-time",
      "description": "Actual time of departure (UTC)"
    },
    "shippingAgent": {
      "type": "string",
      "description": "Shipping agent company name or EORI number"
    },
    "pilotageRequired": {
      "type": "boolean",
      "description": "Whether pilotage is required for this vessel call"
    },
    "tugAssistance": {
      "type": "boolean",
      "description": "Whether tug assistance has been requested"
    },
    "maxDraftForward": {
      "type": "number",
      "description": "Maximum forward draft in meters"
    },
    "maxDraftAft": {
      "type": "number",
      "description": "Maximum aft draft in meters"
    },
    "grossTonnage": {
      "type": "integer",
      "description": "Gross tonnage of the vessel"
    },
    "netTonnage": {
      "type": "integer",
      "description": "Net tonnage of the vessel"
    }
  },
  "required": ["imoNumber", "vesselName", "portCode", "eta", "etd", "status"],
  "examples": [
    {
      "vesselCallId": "RTM-2026-00987654",
      "imoNumber": "9811614",
      "mmsi": "636020485",
      "vesselName": "MSC OSCAR",
      "callSign": "A8IG5",
      "flag": "LBR",
      "portCode": "NLRTM",
      "terminalCode": "ECT-DELTA",
      "status": "EXPECTED",
      "eta": "2026-03-22T06:00:00Z",
      "etd": "2026-03-24T18:00:00Z",
      "ata": null,
      "atd": null,
      "shippingAgent": "MSC AGENCY ROTTERDAM",
      "pilotageRequired": true,
      "tugAssistance": true,
      "grossTonnage": 197362
    }
  ]
}