{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-11T15:52:29Z",
    "providers": [
      "Claude"
    ],
    "breadth": "written by Claude from model knowledge without web access - no source was read, every claim is a lead to verify",
    "pass": 2,
    "wave": 1,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-05T18:30:00Z",
      "ingestedAt": "2026-10-05T13:30:32+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "revisions": [
      {
        "at": "2026-10-07T11:31:37+00:00",
        "engine": "codex",
        "fields": [
          "definition",
          "distinguishing_features"
        ],
        "answering_review": "fd2e9b3e431276e6f84adc5c9be3b06682d7f8b8fadde3cae46ff394932c53e0"
      },
      {
        "at": "2026-10-08T18:49:14+00:00",
        "engine": "codex",
        "fields": [
          "definition",
          "distinguishing_features",
          "owners"
        ],
        "answering_review": "c6a8bee5911d3735895fc931d1eb599da78588f988ca6011c6959af9d79a4459"
      }
    ],
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-08T18:54:39+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q3565782",
    "registryId": "vr.tr.navigational-aid",
    "name": "navigational aid",
    "version": "0.2.0-wave.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.BLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q3565782/",
  "model": {
    "registry_id": "vr.tr.navigational-aid",
    "name": "navigational aid",
    "purpose": "Let an agent explain navigational aids by domain and type, help interpret them from charts and conventions, and support reporting of faults and safe navigation.",
    "definition": "A navigational aid is a marker, structure or device that helps travellers determine position or find a safe course, whether fixed, moored or space-based, including lighthouses, buoys, light floats, beacons, daymarks, radio and satellite aids; boundary, survey and calibration markers qualify only when they assist travel navigation, and authority maintenance or inclusion on charts or maps is not required.",
    "what_it_is_for": "Safe navigation and positioning.",
    "affordances": [
      "identify a navigational aid and its meaning",
      "explain buoyage and light conventions",
      "find charts and notices to mariners",
      "report damaged or missing aids"
    ],
    "distinguishing_features": [
      "Navigational aids may be fixed, moored or space-based.",
      "Navigational aids use standardised conventions.",
      "Navigational aids may be charted and maintained by authorities, but neither is required.",
      "Navigational aids serve multiple domains of travel."
    ],
    "appearance": "Towers, buoys, beacons, markers and posts with distinctive colours and lights.",
    "visual_identification": [
      "Standard colours and shapes",
      "Charted positions",
      "Advertising signs are not aids"
    ],
    "physical_properties": [
      {
        "quantity": "Height above reference level",
        "unit": "m",
        "typical_range": "",
        "note": "Measure the structure or signal elevation relative to the stated ground or water datum."
      },
      {
        "quantity": "Overall width",
        "unit": "m",
        "typical_range": "",
        "note": "Measure the maximum horizontal extent of the physical marker or device."
      },
      {
        "quantity": "Signal repetition period",
        "unit": "s",
        "typical_range": "",
        "note": "For a periodic signaling aid, measure the time required for its complete signal pattern to repeat."
      }
    ],
    "families_and_kinds": [
      "marine aids such as lighthouses and buoys",
      "aviation aids such as beacons and lighting",
      "land markers and survey monuments",
      "electronic aids such as radio beacons and GNSS",
      "historical aids"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "fixed construction",
        "why": "category"
      },
      {
        "relation": "uses",
        "target": "light-communication",
        "why": "light signals"
      },
      {
        "relation": "is charted on",
        "target": "nautical chart",
        "why": "reference"
      },
      {
        "relation": "is related to",
        "target": "ship",
        "why": "users"
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "IALA maritime buoyage system",
      "ICAO standards for aviation aids",
      "National survey and boundary marker laws"
    ],
    "failure_modes_and_hazards": [
      "Missing or unlit aids",
      "Misinterpreting conventions",
      "Over-reliance on a single system"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Report the position, character and status of navigational aids from official notices and charts.",
        "Monitor an aid it is authorized to watch and report an outage or displacement to the authority that maintains it."
      ],
      "must_not": [
        "Move, obscure, switch off or damage a lighthouse, buoy, beacon or marker.",
        "Show a light, signal or transmission that could be mistaken for an official aid.",
        "Present an aid as working when it has been reported out of service.",
        "Disturb survey or boundary markers that record legal positions."
      ],
      "requires_human": [
        "Issuing or withdrawing a warning to mariners or travellers about a failed aid.",
        "Relocating or decommissioning an aid."
      ]
    },
    "ethics": {
      "considerations": [
        "Travellers trust these aids with their lives; a missing or false aid can cause wrecks and deaths.",
        "Historic lighthouses and markers are often cultural heritage as well as working equipment."
      ],
      "affected_parties": [
        "Mariners, pilots and travellers",
        "Crews of rescue services",
        "Coastal communities"
      ]
    },
    "owners": {
      "steward": "The owner, operator or responsible custodian where one is identified, which may be a public authority, community or private party.",
      "master_systems": [
        "Official lists of lights and notices to mariners document aids within their remit.",
        "Nautical and aeronautical charts record some navigational aids without defining the full class."
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q3565782: navigational aid",
      "url": "https://www.wikidata.org/wiki/Q3565782",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Navigational aid",
      "url": "https://en.wikipedia.org/wiki/Navigational_aid",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "interpret",
        "name": "Interpret",
        "description": "What it means.",
        "rationale": "Conventions decide.",
        "layers": [
          {
            "id": "marine",
            "name": "Marine",
            "description": "Buoys and lights.",
            "findings": [
              {
                "id": "marine-finding",
                "name": "Marine",
                "description": "Marine aids.",
                "questions": [
                  {
                    "text": "What does this buoy, beacon or light characteristic indicate under the IALA system in this region?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which side should it be passed on?",
                    "kind": "definition"
                  }
                ]
              }
            ]
          },
          {
            "id": "aviation",
            "name": "Aviation",
            "description": "Aviation aids.",
            "findings": [
              {
                "id": "aviation-finding",
                "name": "Aviation",
                "description": "Aviation aids.",
                "questions": [
                  {
                    "text": "What does this aviation beacon or lighting system indicate?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which radio aids serve this airport?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "use",
        "name": "Use",
        "description": "Navigating.",
        "rationale": "Combine sources.",
        "layers": [
          {
            "id": "charts",
            "name": "Charts",
            "description": "Charts and notices.",
            "findings": [
              {
                "id": "charts-finding",
                "name": "Charts",
                "description": "Charts.",
                "questions": [
                  {
                    "text": "Where is this aid charted, and are there notices about changes?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the chart up to date?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "electronic",
            "name": "Electronic",
            "description": "Electronic aids.",
            "findings": [
              {
                "id": "electronic-finding",
                "name": "Electronic",
                "description": "Electronic aids.",
                "questions": [
                  {
                    "text": "How do GNSS and radio aids complement visual aids?",
                    "kind": "definition"
                  },
                  {
                    "text": "What happens when they fail?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "maintain",
        "name": "Maintain",
        "description": "Faults.",
        "rationale": "Report problems.",
        "layers": [
          {
            "id": "report",
            "name": "Report",
            "description": "Reporting faults.",
            "findings": [
              {
                "id": "report-finding",
                "name": "Report",
                "description": "Reporting.",
                "questions": [
                  {
                    "text": "How can a missing or unlit aid be reported to the responsible authority?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Who maintains aids in this area?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "markers",
            "name": "Markers",
            "description": "Survey markers.",
            "findings": [
              {
                "id": "markers-finding",
                "name": "Markers",
                "description": "Survey markers.",
                "questions": [
                  {
                    "text": "What is this survey or boundary marker, and is it protected by law?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Who should be informed if it is damaged?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "heritage",
        "name": "Heritage",
        "description": "History.",
        "rationale": "Aids have history.",
        "layers": [
          {
            "id": "lighthouses",
            "name": "Lighthouses",
            "description": "Historic lighthouses.",
            "findings": [
              {
                "id": "lighthouses-finding",
                "name": "Lighthouses",
                "description": "Historic lighthouses.",
                "questions": [
                  {
                    "text": "Which historic lighthouses can be visited here?",
                    "kind": "provenance"
                  },
                  {
                    "text": "How have aids evolved?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "curiosities",
            "name": "Curiosities",
            "description": "Unusual markers.",
            "findings": [
              {
                "id": "curiosities-finding",
                "name": "Curiosities",
                "description": "Unusual markers.",
                "questions": [
                  {
                    "text": "What are take-off stones, property stones and other unusual markers?",
                    "kind": "definition"
                  },
                  {
                    "text": "Where are examples?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should each aid type be a separate entry?",
    "How should chart data be linked?",
    "How should fault reporting be localised?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}
