{
  "type": "object",
  "description": "The requirements for installation on a ship",
  "properties": {
    "power": {
      "type": "integer",
      "minimum": 0
    },
    "crew": {
      "type": "integer",
      "minimum": 0
    }
  },
  "required": [
    "power",
    "crew"
  ]
}