{
  "@context": {
    "@version": 1.1,
    "saildrone": "https://raw.githubusercontent.com/api-evangelist/saildrone/main/json-ld/saildrone-context.jsonld#",
    "schema": "https://schema.org/",
    "cf": "http://vocab.nerc.ac.uk/standard_name/",
    "geo": "http://www.opengis.net/ont/geosparql#",
    "dcat": "http://www.w3.org/ns/dcat#",
    "prov": "http://www.w3.org/ns/prov#",

    "Saildrone": "schema:Organization",
    "USV": "saildrone:UnmannedSurfaceVehicle",
    "Mission": "saildrone:Mission",
    "DroneAccess": "saildrone:DroneAccess",
    "Dataset": "dcat:Dataset",
    "TimeSeriesRecord": "saildrone:TimeSeriesRecord",
    "Platform": "saildrone:Platform",

    "drone_id": {
      "@id": "saildrone:droneId",
      "@type": "schema:identifier"
    },
    "mission": {
      "@id": "saildrone:mission",
      "@type": "@id"
    },
    "data_set": {
      "@id": "saildrone:dataSet",
      "@container": "@set"
    },
    "start_date": {
      "@id": "saildrone:startDate",
      "@type": "schema:DateTime"
    },
    "end_date": {
      "@id": "saildrone:endDate",
      "@type": "schema:DateTime"
    },
    "gps_time": {
      "@id": "saildrone:gpsTime",
      "@type": "schema:DateTime"
    },
    "latitude": {
      "@id": "schema:latitude",
      "@type": "xsd:decimal"
    },
    "longitude": {
      "@id": "schema:longitude",
      "@type": "xsd:decimal"
    },

    "TEMP_AIR_MEAN": "cf:air_temperature",
    "RH_MEAN": "cf:relative_humidity",
    "BARO_PRES_MEAN": "cf:air_pressure_at_sea_level",
    "WIND_FROM_MEAN": "cf:wind_from_direction",
    "WIND_SPEED_MEAN": "cf:wind_speed",
    "WAVE_DOMINANT_PERIOD": "cf:sea_surface_wave_period_at_variance_spectral_density_maximum",
    "WAVE_SIGNIFICANT_HEIGHT": "cf:sea_surface_wave_significant_height",
    "TEMP_SBE37_MEAN": "cf:sea_surface_temperature",
    "SAL_SBE37_MEAN": "cf:sea_water_practical_salinity",
    "COND_SBE37_MEAN": "cf:sea_water_electrical_conductivity",
    "O2_CONC_SBE37_MEAN": "cf:mole_concentration_of_dissolved_molecular_oxygen_in_sea_water",
    "CHLOR_RBR_MEAN": "cf:mass_concentration_of_chlorophyll_a_in_sea_water",
    "CO2_DRY_PPM": "cf:mole_fraction_of_carbon_dioxide_in_air",
    "PCO2_SW_DRY": "cf:surface_partial_pressure_of_carbon_dioxide_in_sea_water",
    "SOG": "cf:platform_speed_wrt_ground",
    "COG": "cf:platform_course",
    "HDG": "cf:platform_orientation"
  },
  "@graph": [
    {
      "@id": "saildrone:Saildrone",
      "@type": "Saildrone",
      "schema:name": "Saildrone",
      "schema:url": "https://www.saildrone.com",
      "schema:foundingDate": "2012",
      "schema:founder": "Richard Jenkins",
      "schema:location": "Alameda, California, USA"
    },
    {
      "@id": "saildrone:Platform/Explorer",
      "@type": "Platform",
      "schema:name": "Saildrone Explorer",
      "saildrone:length": "23ft",
      "saildrone:purpose": "Environmental sensing"
    },
    {
      "@id": "saildrone:Platform/Voyager",
      "@type": "Platform",
      "schema:name": "Saildrone Voyager",
      "saildrone:length": "33ft",
      "saildrone:purpose": "Maritime domain awareness, counter-narcotics"
    },
    {
      "@id": "saildrone:Platform/Surveyor",
      "@type": "Platform",
      "schema:name": "Saildrone Surveyor",
      "saildrone:length": "65ft",
      "saildrone:purpose": "Deep-ocean seafloor mapping"
    },
    {
      "@id": "saildrone:Platform/Spectre",
      "@type": "Platform",
      "schema:name": "Saildrone Spectre",
      "saildrone:purpose": "ISR / anti-submarine warfare, kinetic payloads"
    }
  ]
}