{
  "vercy": "1.0-draft",
  "publication": {
    "status": "research-draft",
    "adjudicationStatus": "unreviewed",
    "publishableCanonical": false,
    "generatedAt": "2026-09-12T09:56:52Z",
    "providers": [
      "Codex"
    ],
    "breadth": "recalled by Codex without web access - no source was read",
    "missingProviders": [],
    "pass": 2,
    "cost": {
      "grok": {
        "seconds": 21.9,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0950b-7d78-7142-a6e9-c3d0dd787443\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: gangway\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 043: 1001 registe",
        "usd": 0.0,
        "recall": true
      },
      "codex": {
        "seconds": 60.1,
        "error": "Reading additional input from stdin...\nOpenAI Codex v0.153.4\n--------\nworkdir: R:\\02_PROJECTS\\02_Meta_Models_Platforms\\Ver.cy\\current\\thing-registry-backlog\nmodel: gpt-6-astra\nprovider: openai\napproval: never\nsandbox: read-only\nreasoning effort: none\nreasoning summaries: none\nsession id: 01a0950b-7d82-71d3-805d-49379e26a5ee\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: gangway\nRegistry id: vr.tr.gangway\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nContext "
      }
    },
    "enrichment": {
      "pass": 3,
      "engine": "claude",
      "producedAt": "2026-10-06T12:00:00Z",
      "ingestedAt": "2026-10-06T08:51:39+00:00",
      "fields": [
        "agent_conduct",
        "ethics",
        "failure_modes_and_hazards",
        "owners",
        "standards_and_regulation",
        "visual_identification"
      ]
    },
    "gate": {
      "passed": true,
      "version": "1.0",
      "at": "2026-10-07T10:10:27+00:00",
      "evidence": [
        "completeness 1.00",
        "sense: Wikidata description",
        "2 live sources",
        "review by codex: pass"
      ]
    }
  },
  "metaModel": {
    "id": "THING-Q1807489",
    "registryId": "vr.tr.gangway",
    "name": "gangway",
    "version": "0.1.0-research.1",
    "entryKind": "thing",
    "family": "Thing Registry",
    "domain": [
      "PHY.OBJ"
    ],
    "status": "research-draft"
  },
  "canonicalUrl": "https://ver.cy/models/thing/q1807489/",
  "model": {
    "registry_id": "vr.tr.gangway",
    "name": "gangway",
    "purpose": "Enable an AI agent to recognise a gangway, record its access function and operating limits, and determine whether its current configuration supports an intended crossing.",
    "definition": "A gangway is a fixed or movable walkway or bridge that provides pedestrian passage across a gap, especially between a vessel and shore or between vessels.",
    "scope_statement": "This model provisionally treats gangway as a physical pedestrian access bridge between separated boarding or landing points, especially between a vessel and shore; it owns the crossing assembly, its interfaces and its deployment conditions, pending confirmation of the registry's intended meaning.",
    "in_scope": [
      "Portable, fixed, hinged, telescopic and articulated pedestrian boarding bridges",
      "Walking surface, supporting structure, handrails, guards and end transitions",
      "Connections, supports and restraints at both landing points",
      "Deployment geometry and accommodation of relative endpoint movement",
      "Rated use, inspection condition and availability for crossing"
    ],
    "out_of_scope": [
      "The vessel, quay, offshore installation or building served by the gangway",
      "Internal aisles and circulation passages unless the registry explicitly includes that meaning",
      "General-purpose bridges whose primary role is route continuity rather than boarding access",
      "Vehicle loading ramps and cargo transfer equipment",
      "Passenger processing, security clearance and boarding operations",
      "Product catalogues and individual gangway asset records as separate registered kinds"
    ],
    "distinguishing_features": [
      "Provides a supported walking route across a separation between access points, rather than merely marking an aisle within an existing floor.",
      "Has identifiable landing interfaces whose support, attachment and alignment affect whether the crossing is usable.",
      "Serves pedestrian boarding or transfer; a primarily vehicle-bearing loading surface belongs to a ramp model unless a combined-use boundary is established.",
      "A ladder is distinguished by rung-based climbing; sloping or stepped gangway variants require an explicit boundary with accommodation ladders.",
      "Portable and articulated variants form a usable crossing only when deployed with suitable endpoint engagement and geometry."
    ],
    "characteristics": [
      {
        "name": "Access setting",
        "kind": "category",
        "unit_or_values": "ship-to-shore | vessel-to-vessel | offshore transfer | other documented setting",
        "why_it_matters": "Identifies the endpoint conditions and the terminology requiring confirmation."
      },
      {
        "name": "Deployment mechanism",
        "kind": "category",
        "unit_or_values": "fixed | manually placed | hinged | telescopic | articulated | documented combination",
        "why_it_matters": "Determines how span, position and stowage can change."
      },
      {
        "name": "Usable crossing geometry",
        "kind": "measurement",
        "unit_or_values": "clear width and deployed span in m; slope in degrees; transition gaps and steps in mm",
        "why_it_matters": "Supports assessment of reach, passage clearance and suitability for intended users."
      },
      {
        "name": "Permitted loading",
        "kind": "measurement",
        "unit_or_values": "documented total and concentrated load in kN; distributed load in kN/m² where specified; occupancy in persons where specified",
        "why_it_matters": "Keeps distinct load limits visible without inventing an occupancy conversion."
      },
      {
        "name": "Endpoint engagement",
        "kind": "relation",
        "unit_or_values": "each end linked to its landing, support, attachment, bearing overlap and permitted movement",
        "why_it_matters": "A sound gangway can still be unsafe when its landing engagement is inadequate."
      },
      {
        "name": "Relative movement envelope",
        "kind": "measurement",
        "unit_or_values": "permitted translation in m and rotation in degrees, with rate limits where documented",
        "why_it_matters": "Shows whether changing water level or endpoint motion can exceed the crossing's accommodation."
      },
      {
        "name": "Crossing protection condition",
        "kind": "state",
        "unit_or_values": "walking surface, edge protection and end transitions each assessed as serviceable | defective | unverified",
        "why_it_matters": "Records whether the continuous pedestrian route is protected and traversable."
      },
      {
        "name": "Access state",
        "kind": "state",
        "unit_or_values": "stowed | deploying | deployed and closed | open for crossing | withdrawing | out of service",
        "why_it_matters": "Separates physical deployment from permission to use the crossing."
      },
      {
        "name": "Actuation and loss-of-power behaviour",
        "kind": "category",
        "unit_or_values": "manual | gravity-assisted | electric | hydraulic | other; documented hold, stop or recovery behaviour",
        "why_it_matters": "Determines deployment controls and the consequences of an interrupted power supply."
      }
    ],
    "affordances": [
      "Match a proposed crossing to the gangway's documented span, slope, width and landing requirements.",
      "Check endpoint engagement and movement allowance before opening pedestrian access.",
      "Identify whether an intended user, mobility aid or carried load fits the documented passage and loading limits.",
      "Select deployment, adjustment or withdrawal actions from the applicable operating procedure.",
      "Restrict access when defects, endpoint movement or environmental conditions invalidate the operating limits.",
      "Request inspection or maintenance evidence before returning the gangway to service."
    ],
    "agent_conduct": {
      "may": [
        "Inspect a gangway for secure rigging, handrails, safety net and lighting and report defects to the officer on duty.",
        "Log who boards and leaves a vessel by the gangway when authorized to keep the record.",
        "Warn people about tide, swell or vessel movement that makes the gangway unsafe."
      ],
      "must_not": [
        "Allow boarding by a gangway that is unsecured, damaged or without required safety netting.",
        "Let people board a vessel without the master's or terminal's authorization.",
        "Overload a gangway beyond its rated capacity.",
        "Move or remove a gangway while people are on it."
      ],
      "requires_human": [
        "Rigging, removing or approving a gangway for use.",
        "Refusing boarding to a person in a dispute or emergency."
      ]
    },
    "ethics": {
      "considerations": [
        "Falls between ship and quay can kill or seriously injure people.",
        "Access control at the gangway protects crews and passengers from intruders."
      ],
      "affected_parties": [
        "Crew and passengers",
        "Dock workers",
        "Visitors"
      ]
    },
    "owners": {
      "steward": "The master of the vessel or the terminal operator that provides it.",
      "master_systems": []
    },
    "visual_identification": [
      "A narrow walkway or ladder with handrails bridging a ship and a quay or another vessel.",
      "Often has a safety net slung beneath and a wheel or roller at the shore end."
    ],
    "failure_modes_and_hazards": [
      "Tide and swell can shift or detach a gangway and throw people into the gap.",
      "Wet or icy treads cause slips and falls."
    ],
    "standards_and_regulation": [
      "International Convention for the Safety of Life at Sea (SOLAS), International Maritime Organization, which sets requirements for means of embarkation and disembarkation."
    ],
    "what_it_is_for": [
      "A gangway provides pedestrian access between a watercraft and a quay, pontoon or another vessel.",
      "It is used during boarding, disembarkation and vessel servicing where a gap or height difference prevents direct passage.",
      "Its suitability depends on the vessel's movement, water level and the needs of the people crossing."
    ]
  },
  "sources": [
    {
      "id": "wikidata",
      "title": "Wikidata item Q1807489: gangway",
      "url": "https://www.wikidata.org/wiki/Q1807489",
      "url_status": "live",
      "what_it_supports": "identity and sense of the item",
      "checked_by": "wikidata-api"
    },
    {
      "id": "wikipedia-en",
      "title": "Wikipedia: Gangway (nautical)",
      "url": "https://en.wikipedia.org/wiki/Gangway_%28nautical%29",
      "url_status": "live",
      "what_it_supports": "general description of the item",
      "checked_by": "wikidata-api sitelink"
    }
  ],
  "structure": {
    "bundles": [
      {
        "id": "crossing-identity",
        "name": "Crossing identity",
        "description": "Establishes which physical access arrangements count as gangways and what crossing each arrangement serves.",
        "rationale": "Gangway can denote different access structures and passages; the agent must establish the intended sense before applying operating assumptions.",
        "layers": [
          {
            "id": "gangway-boundary",
            "name": "Gangway boundary",
            "description": "Distinguishes the boarding bridge from adjacent access structures.",
            "findings": [
              {
                "id": "boarding-bridge-test",
                "name": "Boarding bridge test",
                "description": "Record whether the object supplies a pedestrian crossing between distinct landing points and how local terminology separates it from ladders, ramps and aisles.",
                "questions": [
                  {
                    "text": "Does gangway here mean a boarding bridge, an internal passage or another physical arrangement?",
                    "kind": "definition",
                    "id": "boarding-bridge-test-q01"
                  },
                  {
                    "text": "Which features distinguish this arrangement from an accommodation ladder, passenger boarding bridge or vehicle ramp?",
                    "kind": "boundary",
                    "id": "boarding-bridge-test-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "served-crossing",
            "name": "Served crossing",
            "description": "Identifies the access points and intended pedestrian traffic.",
            "findings": [
              {
                "id": "landing-and-user-context",
                "name": "Landing and user context",
                "description": "Describe both landing environments and the users or carried items the crossing is intended to accommodate.",
                "questions": [
                  {
                    "text": "What types of landing does the gangway connect, and which can move during use?",
                    "kind": "boundary",
                    "id": "landing-and-user-context-q01"
                  },
                  {
                    "text": "Which users, mobility aids and carried loads are included in its documented intended use?",
                    "kind": "definition",
                    "id": "landing-and-user-context-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "span-and-landing-engagement",
        "name": "Span and landing engagement",
        "description": "Captures the geometry and support conditions that make a continuous crossing possible.",
        "rationale": "Gangway usability depends on both reaching the opposite landing and retaining adequate support as the endpoints change position.",
        "layers": [
          {
            "id": "crossing-geometry",
            "name": "Crossing geometry",
            "description": "Records the deployed walking route and its limits.",
            "findings": [
              {
                "id": "usable-route-envelope",
                "name": "Usable route envelope",
                "description": "Keep actual span, clear width, slope and transition dimensions separate from their permitted ranges.",
                "questions": [
                  {
                    "text": "What are the deployed span, narrowest clear width, slope and end-transition gaps or steps?",
                    "kind": "measurement",
                    "id": "usable-route-envelope-q01"
                  },
                  {
                    "text": "Which documented limits apply to this configuration and intended crossing use?",
                    "kind": "provenance",
                    "id": "usable-route-envelope-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "support-and-motion",
            "name": "Support and motion",
            "description": "Describes attachment, bearing and accommodation of endpoint displacement.",
            "findings": [
              {
                "id": "retained-end-engagement",
                "name": "Retained end engagement",
                "description": "Record how each end is supported or restrained and what movement can occur without losing engagement or imposing an unsupported constraint.",
                "questions": [
                  {
                    "text": "How is each end attached or supported, and what minimum engagement must be maintained?",
                    "kind": "definition",
                    "id": "retained-end-engagement-q01"
                  },
                  {
                    "text": "What endpoint translation and rotation can this configuration accommodate?",
                    "kind": "measurement",
                    "id": "retained-end-engagement-q02"
                  },
                  {
                    "text": "What observed movement or loss of engagement requires closing the crossing?",
                    "kind": "action",
                    "id": "retained-end-engagement-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "pedestrian-passage-and-loading",
        "name": "Pedestrian passage and loading",
        "description": "Connects pedestrian movement, walking-surface protection and structural loading to the intended crossing.",
        "rationale": "Reaching both landings does not establish that people can traverse the route safely or that their combined loading is permitted.",
        "layers": [
          {
            "id": "walking-route-protection",
            "name": "Walking route protection",
            "description": "Examines the deck, edge protection and transitions as a continuous pedestrian route.",
            "findings": [
              {
                "id": "continuous-traversable-route",
                "name": "Continuous traversable route",
                "description": "Record surface traction, obstructions, guard continuity and transition features, including their suitability for intended users.",
                "questions": [
                  {
                    "text": "Where do the deck, handrails, guards or landing transitions have defects, interruptions or obstructions?",
                    "kind": "measurement",
                    "id": "continuous-traversable-route-q01"
                  },
                  {
                    "text": "Under which surface and transition conditions must passage be restricted or closed?",
                    "kind": "action",
                    "id": "continuous-traversable-route-q02"
                  }
                ]
              }
            ]
          },
          {
            "id": "crossing-load-limits",
            "name": "Crossing load limits",
            "description": "Relates permitted loading to deployment and traffic assumptions.",
            "findings": [
              {
                "id": "configuration-specific-capacity",
                "name": "Configuration-specific capacity",
                "description": "Record applicable load ratings and any separate occupancy or traffic restrictions for the deployed arrangement.",
                "questions": [
                  {
                    "text": "What total, distributed and concentrated load limits are documented for the current span and support arrangement?",
                    "kind": "measurement",
                    "id": "configuration-specific-capacity-q01"
                  },
                  {
                    "text": "What evidence establishes any occupancy, passing or carried-equipment restrictions?",
                    "kind": "provenance",
                    "id": "configuration-specific-capacity-q02"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "deployment-and-serviceability",
        "name": "Deployment and serviceability",
        "description": "Governs transitions between stowage, deployment, crossing use and withdrawal using condition and operating evidence.",
        "rationale": "A gangway may be physically deployed while unsuitable for access, and deployment mechanisms introduce conditions distinct from pedestrian use.",
        "layers": [
          {
            "id": "deployment-controls",
            "name": "Deployment controls",
            "description": "Identifies mechanisms, securing arrangements and conditions for changing access state.",
            "findings": [
              {
                "id": "controlled-access-transition",
                "name": "Controlled access transition",
                "description": "Record how the gangway is positioned, secured and opened, including relevant locks, controls and interruption behaviour where fitted.",
                "questions": [
                  {
                    "text": "Which positioning, securing and access-control checks precede opening this gangway?",
                    "kind": "action",
                    "id": "controlled-access-transition-q01"
                  },
                  {
                    "text": "How does the deployment mechanism behave on loss of power or control, where applicable?",
                    "kind": "definition",
                    "id": "controlled-access-transition-q02"
                  },
                  {
                    "text": "Which adjustments are permitted while people are crossing?",
                    "kind": "action",
                    "id": "controlled-access-transition-q03"
                  }
                ]
              }
            ]
          },
          {
            "id": "condition-and-return-to-use",
            "name": "Condition and return to use",
            "description": "Connects inspection evidence and operating exposure to continued availability.",
            "findings": [
              {
                "id": "serviceability-evidence",
                "name": "Serviceability evidence",
                "description": "Record checks of load-bearing members, deck, pins, hinges, rollers, attachments and fitted actuation equipment against applicable acceptance criteria.",
                "questions": [
                  {
                    "text": "Which inspection records and manufacturer or applicable authority criteria support the current serviceability assessment?",
                    "kind": "provenance",
                    "id": "serviceability-evidence-q01"
                  },
                  {
                    "text": "Which defects, impacts, overloads or environmental exposures trigger closure and reassessment?",
                    "kind": "action",
                    "id": "serviceability-evidence-q02"
                  },
                  {
                    "text": "What inspection, repair or functional verification is required before reopening after a restriction?",
                    "kind": "action",
                    "id": "serviceability-evidence-q03"
                  }
                ]
              }
            ]
          }
        ]
      },
      {
        "id": "evidence-and-external-alignment",
        "name": "Evidence and external alignment",
        "description": "What the world already says about this thing, gathered so the model can be checked against it.",
        "rationale": "A model that cannot be lined up against existing standards, identifiers and practice cannot be adopted by anyone who already uses them.",
        "layers": [
          {
            "id": "reported-evidence",
            "name": "Reported evidence",
            "description": "Findings from the breadth pass, kept separate from the structural claims.",
            "findings": [
              {
                "id": "evidence-confidence-notes",
                "name": "Check these first",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "The registry provides no sense; this description assumes the maritime access structure rather than an aisle or railway intervehicle connection.",
                  "Regulatory applicability depends on vessel type, construction date, service and jurisdiction; the cited provision is recalled, not checked.",
                  "Dimensions, allowable inclination and rated loads vary substantially by installation, so no universal typical ranges are supplied."
                ],
                "questions": [
                  {
                    "id": "evidence-confidence-notes-q01",
                    "text": "Which of these check these first hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-kinds",
                "name": "Kinds and varieties",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Portable gangway",
                  "Hinged gangway",
                  "Telescopic gangway",
                  "Shore-mounted gangway",
                  "Motion-compensated gangway"
                ],
                "questions": [
                  {
                    "id": "evidence-kinds-q01",
                    "text": "Which of these kinds and varieties hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-standards-and-regulation",
                "name": "Standards and regulation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "International Maritime Organization (IMO), SOLAS regulation II-1/3-9: means of embarkation on and disembarkation from ships."
                ],
                "questions": [
                  {
                    "id": "evidence-standards-and-regulation-q01",
                    "text": "Which of these standards and regulation hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-real-world-use",
                "name": "Real-world use",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Boarding and leaving moored vessels.",
                  "Providing pedestrian access between floating pontoons and shore.",
                  "Transferring personnel between offshore service vessels and offshore installations.",
                  "Providing access between vessels alongside one another."
                ],
                "questions": [
                  {
                    "id": "evidence-real-world-use-q01",
                    "text": "Which of these real-world use hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-failure-modes-and-hazards",
                "name": "Failure modes and hazards",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Slips, trips and falls caused by wet surfaces, obstructions or excessive inclination.",
                  "Falls from unprotected edges or through gaps at landings.",
                  "Structural failure caused by overload, corrosion, fatigue or damaged connections.",
                  "Displacement or loss of support as vessels move or water levels change.",
                  "Crushing or entrapment at hinges, telescoping sections or moving landings."
                ],
                "questions": [
                  {
                    "id": "evidence-failure-modes-and-hazards-q01",
                    "text": "Which of these failure modes and hazards hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-regional-variation",
                "name": "Regional variation",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  "Gangway can also denote an aisle or passage within a vehicle or building; transport-sector terminology affects its intended meaning."
                ],
                "questions": [
                  {
                    "id": "evidence-regional-variation-q01",
                    "text": "Which of these regional variation hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              },
              {
                "id": "evidence-neighbours",
                "name": "Neighbouring kinds and how to tell them apart",
                "description": "Recalled without web access and unsourced; every item is a lead to verify.",
                "evidence": [
                  {
                    "name": "Accommodation ladder",
                    "difference": "An accommodation ladder provides stepped access along a ship's side; a gangway generally provides a walkway spanning between access points."
                  },
                  {
                    "name": "Boarding ramp",
                    "difference": "A boarding ramp may carry vehicles or cargo as well as pedestrians; a gangway primarily provides pedestrian passage."
                  },
                  {
                    "name": "Footbridge",
                    "difference": "Footbridge is the broader structural category; gangway commonly denotes an access connection to a vessel, platform or other facility."
                  },
                  {
                    "name": "Railway gangway",
                    "difference": "A railway gangway connects adjacent passenger vehicles and accommodates their relative movement, rather than connecting a vessel to an external landing."
                  }
                ],
                "questions": [
                  {
                    "id": "evidence-neighbours-q01",
                    "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of gangway this model covers, and on what evidence?",
                    "kind": "provenance"
                  }
                ]
              }
            ]
          }
        ]
      }
    ]
  },
  "openQuestions": [
    "Does vr.tr.gangway identify a maritime boarding bridge specifically, or does it also include internal passages and other boarding structures?",
    "Which existing registry entries or world models own accommodation ladders, passenger boarding bridges and motion-compensated offshore gangways, and where should their boundaries fall?",
    "Which standards, issuing bodies and inspection requirements apply to each confirmed setting and jurisdiction?",
    "What source-backed geometry, load and movement ranges distinguish the relevant gangway variants without implying universal limits?",
    "Which accessibility provisions and operating restrictions apply to mobility aids, assisted passage and changing endpoint elevations?"
  ],
  "statistics": {
    "bundles": 5,
    "layers": 9,
    "findings": 15,
    "questions": 26
  }
}
