{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-14T03:47:14Z",
    "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": 4,
    "engine": "claude",
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T11:00:00Z",
      "ingestedAt": "2026-10-06T07:44:39+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "owners"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-06T19:51:54+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1310021",
    "registryId": "vr.tr.isolated-danger-mark",
    "name": "isolated danger mark",
    "version": "0.2.0-wave.4",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.BLT"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1310021/",
  "model": {
    "registry_id": "vr.tr.isolated-danger-mark",
    "name": "isolated danger mark",
    "purpose": "Let an agent explain the isolated danger mark, relay its meaning, appearance and use from maritime navigation sources, and distinguish it from lateral marks, cardinal marks and safe-water marks.",
    "definition": "A navigational aid used at sea, a buoy or beacon that marks an isolated danger such as a rock or wreck that has navigable water all around it, so vessels know to keep clear; it is one of the standard categories of sea mark defined by the international buoyage system, distinguished by black and red bands and, when lit, a specific flash pattern with two spheres as a topmark. It warns of a point hazard rather than marking a channel side.",
    "what_it_is_for": "Marking an isolated danger with clear water around it.",
    "affordances": [
      "explain the mark",
      "relay its appearance and lights",
      "relay its use",
      "distinguish it from other marks"
    ],
    "distinguishing_features": [
      "Marks a point danger",
      "Clear water all around",
      "Black with red bands",
      "Two-sphere topmark"
    ],
    "appearance": "A black buoy or beacon with one or more broad red horizontal bands, topped by two black spheres, flashing in a set group when lit.",
    "visual_identification": [
      "Black-and-red buoy with two-sphere topmark",
      "Isolated danger mark",
      "Lateral marks show channel sides; cardinal marks show the safe side of a danger; safe-water marks show clear water"
    ],
    "physical_properties": [
      {
        "quantity": "marks",
        "typical_range": "an isolated point danger",
        "unit": "note",
        "note": ""
      },
      {
        "quantity": "topmark",
        "typical_range": "two black spheres",
        "unit": "note",
        "note": ""
      },
      {
        "quantity": "registry parent",
        "typical_range": "navigational aid",
        "unit": "note",
        "note": ""
      }
    ],
    "families_and_kinds": [
      "lit isolated danger mark",
      "unlit isolated danger mark"
    ],
    "related_models": [
      {
        "relation": "is a kind of",
        "target": "navigational aid",
        "why": "in registry terms"
      },
      {
        "relation": "is contrasted with",
        "target": "lateral mark",
        "why": ""
      },
      {
        "relation": "is contrasted with",
        "target": "cardinal mark",
        "why": ""
      },
      {
        "relation": "is contrasted with",
        "target": "safe-water mark",
        "why": ""
      }
    ],
    "identifiers": [],
    "standards_and_regulation": [
      "International maritime buoyage system"
    ],
    "failure_modes_and_hazards": [
      "Confusing with cardinal or lateral marks",
      "Misreading the topmark",
      "Ignoring the light pattern"
    ],
    "in_scope": [],
    "out_of_scope": [],
    "characteristics": [],
    "agent_conduct": {
      "may": [
        "Identify the mark by its black and red bands, two-sphere topmark and light pattern, citing the buoyage rules.",
        "Report a mark that is missing, off station, unlit or damaged to the responsible authority.",
        "Steer an authorized vessel to keep clear of the danger the mark indicates."
      ],
      "must_not": [
        "Move, damage, tie up to or interfere with a navigation mark.",
        "Confuse the mark with cardinal or lateral marks when advising on a passage.",
        "Pass close to the mark or between it and its danger.",
        "Rely on the mark's position alone without checking current charts and notices to mariners."
      ],
      "requires_human": [
        "Issuing or changing navigational warnings about a mark."
      ]
    },
    "ethics": {
      "considerations": [
        "Mariners' lives depend on marks being where charts say and being read correctly.",
        "Tampering with aids to navigation endangers every vessel in the area."
      ],
      "affected_parties": [
        "Mariners and crews",
        "Passengers",
        "Coastal communities"
      ]
    },
    "owners": {
      "steward": "The national lighthouse or navigation authority responsible for aids to navigation in those waters.",
      "master_systems": [
        "Official charts and lists of lights",
        "Notices to mariners"
      ]
    }
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1310021: isolated danger mark",
      "url": "https://www.wikidata.org/wiki/Q1310021",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Isolated danger mark",
      "url": "https://en.wikipedia.org/wiki/Isolated_danger_mark",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "understand",
        "name": "Understand",
        "description": "What the mark is.",
        "rationale": "Definition.",
        "layers": [
          {
            "id": "definition",
            "name": "Definition",
            "description": "Definition.",
            "findings": [
              {
                "id": "definition-finding",
                "name": "Definition",
                "description": "Definition.",
                "questions": [
                  {
                    "text": "What is an isolated danger mark, and how does it differ from lateral, cardinal and safe-water marks?",
                    "kind": "definition"
                  },
                  {
                    "text": "Is the question about navigation safety needing charts and training?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "recognition",
            "name": "Recognition",
            "description": "Recognition.",
            "findings": [
              {
                "id": "recognition-finding",
                "name": "Recognition",
                "description": "Recognition.",
                "questions": [
                  {
                    "text": "How is an isolated danger mark recognised by colour and topmark?",
                    "kind": "definition"
                  },
                  {
                    "text": "Which entry fits the related mark?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "appearance",
        "name": "Appearance",
        "description": "Appearance.",
        "rationale": "Sources.",
        "layers": [
          {
            "id": "colours",
            "name": "Colours",
            "description": "Colours and topmark.",
            "findings": [
              {
                "id": "colours-finding",
                "name": "Colours",
                "description": "Colours.",
                "questions": [
                  {
                    "text": "What colours and topmark identify the mark?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which references are standard?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          },
          {
            "id": "light",
            "name": "Light",
            "description": "Light pattern.",
            "findings": [
              {
                "id": "light-finding",
                "name": "Light",
                "description": "Light.",
                "questions": [
                  {
                    "text": "What light pattern does a lit isolated danger mark show?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which sources are cited?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "use",
        "name": "Use",
        "description": "Use.",
        "rationale": "Standards.",
        "layers": [
          {
            "id": "meaning",
            "name": "Meaning",
            "description": "Meaning.",
            "findings": [
              {
                "id": "meaning-finding",
                "name": "Meaning",
                "description": "Meaning.",
                "questions": [
                  {
                    "text": "What should a mariner do on seeing this mark?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is proper training and charting needed?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "system",
            "name": "System",
            "description": "Buoyage system.",
            "findings": [
              {
                "id": "system-finding",
                "name": "System",
                "description": "System.",
                "questions": [
                  {
                    "text": "How does the mark fit the international buoyage system?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the buoyage system?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "context",
        "name": "Context",
        "description": "Context.",
        "rationale": "Context.",
        "layers": [
          {
            "id": "regions",
            "name": "Regions",
            "description": "Regional systems.",
            "findings": [
              {
                "id": "regions-finding",
                "name": "Regions",
                "description": "Regions.",
                "questions": [
                  {
                    "text": "How do buoyage regions affect sea marks?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Is the information current?",
                    "kind": "boundary"
                  }
                ]
              }
            ]
          },
          {
            "id": "related",
            "name": "Related",
            "description": "Related marks.",
            "findings": [
              {
                "id": "related-finding",
                "name": "Related",
                "description": "Related.",
                "questions": [
                  {
                    "text": "How does this mark relate to cardinal and lateral marks?",
                    "kind": "provenance"
                  },
                  {
                    "text": "Which entry fits the related mark?",
                    "kind": "action"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Should lit and unlit versions be distinguished?",
    "How should the buoyage system be linked?",
    "How should regional buoyage differences be noted?"
  ],
  "statistics": {
    "bundles": 4,
    "layers": 8,
    "findings": 8,
    "questions": 16
  }
}