{
  "name": "CGMIX Vessel",
  "description": "Data structure for a U.S. Coast Guard CGMIX documented vessel record",
  "fields": [
    {
      "name": "vesselId",
      "type": "string",
      "description": "Official vessel number",
      "required": true
    },
    {
      "name": "vesselName",
      "type": "string",
      "description": "Registered vessel name",
      "required": true
    },
    {
      "name": "flag",
      "type": "string",
      "description": "Flag state",
      "required": true
    },
    {
      "name": "hullIdentificationNumber",
      "type": "string",
      "description": "Hull Identification Number (HIN)"
    },
    {
      "name": "vesselType",
      "type": "string",
      "description": "Classification type (Cargo, Tanker, Passenger, etc.)"
    },
    {
      "name": "grossTons",
      "type": "number",
      "description": "Gross tonnage"
    },
    {
      "name": "netTons",
      "type": "number",
      "description": "Net tonnage"
    },
    {
      "name": "length",
      "type": "number",
      "description": "Overall length in feet"
    },
    {
      "name": "breadth",
      "type": "number",
      "description": "Beam width in feet"
    },
    {
      "name": "depth",
      "type": "number",
      "description": "Hull depth in feet"
    },
    {
      "name": "propulsionType",
      "type": "string",
      "description": "Primary propulsion method"
    },
    {
      "name": "serviceType",
      "type": "string",
      "description": "Trade route classification"
    },
    {
      "name": "ownerName",
      "type": "string",
      "description": "Registered owner name"
    },
    {
      "name": "homePort",
      "type": "string",
      "description": "Documented home port"
    }
  ]
}