{
  "@context": {
    "@version": 1.1,
    "@vocab": "https://schema.org/",
    "vf": "https://api.vesselfinder.com/v1/",
    "schema": "https://schema.org/",
    "xsd": "http://www.w3.org/2001/XMLSchema#",
    "geo": "http://www.opengis.net/ont/geosparql#",
    "dcterms": "http://purl.org/dc/terms/",

    "Vessel": {
      "@id": "vf:Vessel",
      "@context": {
        "mmsi": { "@id": "vf:Vessel/mmsi", "@type": "xsd:integer" },
        "imo": { "@id": "vf:Vessel/imo", "@type": "xsd:integer" },
        "name": { "@id": "schema:name", "@type": "xsd:string" },
        "callsign": { "@id": "vf:Vessel/callsign", "@type": "xsd:string" },
        "flag": { "@id": "vf:Vessel/flag", "@type": "xsd:string" },
        "type": { "@id": "vf:Vessel/type", "@type": "xsd:string" },
        "built": { "@id": "vf:Vessel/built", "@type": "xsd:integer" },
        "length": { "@id": "vf:Vessel/length", "@type": "xsd:decimal" },
        "beam": { "@id": "vf:Vessel/beam", "@type": "xsd:decimal" },
        "grossTonnage": { "@id": "vf:Vessel/gt", "@type": "xsd:integer" },
        "deadweight": { "@id": "vf:Vessel/dwt", "@type": "xsd:integer" },
        "teu": { "@id": "vf:Vessel/teu", "@type": "xsd:integer" }
      }
    },

    "AISReport": {
      "@id": "vf:AISReport",
      "@context": {
        "timestamp": { "@id": "dcterms:date", "@type": "xsd:dateTime" },
        "latitude": { "@id": "schema:latitude", "@type": "xsd:decimal" },
        "longitude": { "@id": "schema:longitude", "@type": "xsd:decimal" },
        "course": { "@id": "vf:AISReport/course", "@type": "xsd:decimal" },
        "speed": { "@id": "vf:AISReport/speed", "@type": "xsd:decimal" },
        "heading": { "@id": "vf:AISReport/heading", "@type": "xsd:integer" },
        "navstat": { "@id": "vf:AISReport/navstat", "@type": "xsd:integer" },
        "draught": { "@id": "vf:AISReport/draught", "@type": "xsd:decimal" },
        "destination": { "@id": "vf:AISReport/destination", "@type": "xsd:string" },
        "eta": { "@id": "vf:AISReport/eta", "@type": "xsd:dateTime" },
        "source": { "@id": "vf:AISReport/source", "@type": "xsd:string" }
      }
    },

    "Port": {
      "@id": "schema:Place",
      "@context": {
        "locode": { "@id": "vf:Port/locode", "@type": "xsd:string" },
        "name": { "@id": "schema:name", "@type": "xsd:string" },
        "country": { "@id": "schema:addressCountry", "@type": "xsd:string" }
      }
    },

    "PortCall": {
      "@id": "vf:PortCall",
      "@context": {
        "mmsi": { "@id": "vf:PortCall/mmsi", "@type": "xsd:integer" },
        "imo": { "@id": "vf:PortCall/imo", "@type": "xsd:integer" },
        "event": { "@id": "vf:PortCall/event", "@type": "xsd:string" },
        "timestamp": { "@id": "dcterms:date", "@type": "xsd:dateTime" },
        "port": { "@id": "schema:location", "@type": "vf:Port" },
        "locode": { "@id": "vf:Port/locode", "@type": "xsd:string" }
      }
    },

    "ContainerShipment": {
      "@id": "vf:ContainerShipment",
      "@context": {
        "containerNumber": { "@id": "vf:ContainerShipment/containerNumber", "@type": "xsd:string" },
        "sealine": { "@id": "vf:ContainerShipment/sealine", "@type": "xsd:string" },
        "origin": { "@id": "vf:ContainerShipment/origin", "@type": "vf:Port" },
        "destination": { "@id": "vf:ContainerShipment/destination", "@type": "vf:Port" },
        "progress": { "@id": "vf:ContainerShipment/progress", "@type": "xsd:decimal" },
        "schedule": { "@id": "vf:ContainerShipment/schedule", "@container": "@list" }
      }
    },

    "SeaRoute": {
      "@id": "vf:SeaRoute",
      "@context": {
        "from": { "@id": "vf:SeaRoute/from" },
        "to": { "@id": "vf:SeaRoute/to" },
        "distance": { "@id": "vf:SeaRoute/distance", "@type": "xsd:decimal" },
        "distanceECA": { "@id": "vf:SeaRoute/distanceECA", "@type": "xsd:decimal" },
        "crossing": { "@id": "vf:SeaRoute/crossing", "@container": "@list" }
      }
    }
  }
}