{
  "@context": {
    "@version": 1.1,
    "schema": "https://schema.org/",
    "geo": "http://www.w3.org/2003/01/geo/wgs84_pos#",
    "mt": "https://www.marinetraffic.com/ontology/",
    "xsd": "http://www.w3.org/2001/XMLSchema#",

    "Vessel": "schema:Vehicle",
    "MMSI": {
      "@id": "schema:identifier",
      "@type": "xsd:string"
    },
    "IMO": {
      "@id": "mt:imoNumber",
      "@type": "xsd:integer"
    },
    "SHIP_ID": {
      "@id": "mt:shipId",
      "@type": "xsd:integer"
    },
    "VESSEL_NAME": "schema:name",
    "CALLSIGN": "mt:callsign",
    "FLAG": "schema:countryOfOrigin",
    "YEAR_BUILT": {
      "@id": "schema:productionDate",
      "@type": "xsd:gYear"
    },
    "LENGTH": {
      "@id": "schema:depth",
      "@type": "xsd:decimal"
    },
    "WIDTH": {
      "@id": "schema:width",
      "@type": "xsd:decimal"
    },
    "GT": {
      "@id": "mt:grossTonnage",
      "@type": "xsd:integer"
    },
    "DWT": {
      "@id": "mt:deadweightTonnage",
      "@type": "xsd:integer"
    },
    "LAT": {
      "@id": "geo:lat",
      "@type": "xsd:decimal"
    },
    "LON": {
      "@id": "geo:long",
      "@type": "xsd:decimal"
    },
    "SPEED": {
      "@id": "mt:speedOverGround",
      "@type": "xsd:decimal"
    },
    "HEADING": {
      "@id": "mt:trueHeading",
      "@type": "xsd:integer"
    },
    "COURSE": {
      "@id": "mt:courseOverGround",
      "@type": "xsd:decimal"
    },
    "STATUS": {
      "@id": "mt:navigationalStatus",
      "@type": "xsd:integer"
    },
    "TIMESTAMP": {
      "@id": "schema:dateModified",
      "@type": "xsd:dateTime"
    },
    "DESTINATION": {
      "@id": "schema:toLocation",
      "@type": "xsd:string"
    },
    "ETA": {
      "@id": "schema:arrivalTime",
      "@type": "xsd:dateTime"
    },
    "PortCall": "schema:Event",
    "PORT_NAME": "schema:name",
    "UNLOCODE": "schema:identifier",
    "ARRIVAL": {
      "@id": "schema:startDate",
      "@type": "xsd:dateTime"
    },
    "DEPARTURE": {
      "@id": "schema:endDate",
      "@type": "xsd:dateTime"
    }
  }
}