{ "vercy": "1.0-draft", "publication": { "status": "research-draft", "adjudicationStatus": "unreviewed", "publishableCanonical": false, "generatedAt": "2026-09-12T11:30:58Z", "providers": [ "Codex" ], "breadth": "recalled by Codex without web access - no source was read", "missingProviders": [], "pass": 2, "cost": { "grok": { "seconds": 28.0, "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: 01a09561-619e-7ee0-b04f-defa55734590\n--------\nuser\nDescribe what is already known about one registered thing. Answer as JSON only, no prose around it.\n\nThing: narrowboat\nSense to describe: (none recorded)\nDomain code: PHY.OBJ\nAlso known as: (none)\n\n\nContext for this batch of 1001 things:\n# Batch 044: 1001 regi", "usd": 0.0, "recall": true }, "codex": { "seconds": 76.2, "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: 01a09561-6193-72e1-9010-9a47aaeb1ea4\n--------\nuser\nYou are drafting a Vercy meta-model for one registered thing. Answer as JSON only, no prose around it.\n\nThing: narrowboat\nRegistry id: vr.tr.narrowboat\nPlane / domain: PHY / PHY.OBJ\nRegistry definition: (none recorded)\nNames folded into this entry: (none)\n\n\nCo" } }, "enrichment": { "pass": 3, "engine": "claude", "producedAt": "2026-10-06T12:00:00Z", "ingestedAt": "2026-10-06T08:52:34+00:00", "fields": [ "agent_conduct", "ethics", "failure_modes_and_hazards", "owners", "standards_and_regulation", "visual_identification" ] }, "gate": { "passed": true, "version": "1.0", "at": "2026-10-07T10:10:32+00:00", "evidence": [ "completeness 1.00", "sense: Wikidata description", "2 live sources", "review by codex: pass" ] } }, "metaModel": { "id": "THING-Q649870", "registryId": "vr.tr.narrowboat", "name": "narrowboat", "version": "0.1.0-research.1", "entryKind": "thing", "family": "Thing Registry", "domain": [ "PHY.OBJ" ], "status": "research-draft" }, "canonicalUrl": "https://ver.cy/models/thing/q649870/", "model": { "registry_id": "vr.tr.narrowboat", "name": "narrowboat", "purpose": "Enable an agent to recognise a narrowboat, assess its condition and waterway compatibility, and determine which movements, uses and maintenance actions are appropriate.", "definition": "A narrowboat is a long, slender, usually flat-bottomed inland-waterway vessel developed for British canals, with a beam of about 7 feet or less to pass through their narrow locks.", "scope_statement": "This model owns the identifying form, physical configuration, onboard systems, operational condition and use constraints of a narrowboat as a vessel kind, with characteristics for assessing individual examples.", "in_scope": [ "Narrow canal-vessel identity, including powered, unpowered, historic and converted examples", "Hull geometry, construction, loading and compatibility with restricted waterways", "Propulsion, steering, stopping and handling arrangements", "Accommodation, cargo spaces and onboard utility systems where fitted", "Condition, maintenance needs and evidence governing navigation or occupation" ], "out_of_scope": [ "Canals, locks, bridges, tunnels and moorings as infrastructure assets", "Wide-beam canal boats, barges and other vessel kinds beyond boundary comparisons", "Engine, battery, stove and other component models in full technical detail", "Boatbuilder businesses, product ranges and commercial listings", "Ownership, insurance, navigation licences and residential permissions as independent administrative records" ], "distinguishing_features": [ "Check whether the vessel's design identity and narrow hull form belong to the narrowboat tradition; being a small boat on a canal is insufficient.", "Distinguish a narrowboat from a wide-beam canal boat using measured beam and documented design context rather than similar cabin styling.", "Distinguish the vessel from a floating home or pontoon by examining its hull, navigation arrangements and original or current vessel identity; residential use alone does not decide the boundary.", "Do not require an engine for membership: establish whether an unpowered example is a narrowboat intended for towing, such as a butty.", "Treat traditional, semi-traditional and cruiser stern arrangements as configuration differences within the kind rather than separate vessel kinds." ], "characteristics": [ { "name": "Vessel configuration", "kind": "category", "unit_or_values": "powered narrowboat | unpowered butty | other documented configuration | unresolved", "why_it_matters": "Determines whether independent movement, towing or a more specific identity assessment is needed." }, { "name": "Overall length", "kind": "measurement", "unit_or_values": "m, with measurement endpoints and projecting fittings recorded", "why_it_matters": "Constrains lock use, turning space and mooring fit." }, { "name": "Maximum beam", "kind": "measurement", "unit_or_values": "m, distinguishing hull width from fenders and other projections", "why_it_matters": "Supports kind recognition and assessment of passage through narrow restrictions." }, { "name": "Loaded draught", "kind": "measurement", "unit_or_values": "m, with loading condition and deepest point identified", "why_it_matters": "Controls under-keel clearance and access to shallow channels or banks." }, { "name": "Air draught", "kind": "measurement", "unit_or_values": "m above waterline, with roof equipment and removable items identified", "why_it_matters": "Determines bridge and tunnel clearance in the assessed configuration." }, { "name": "Hull construction", "kind": "category", "unit_or_values": "documented material, construction method and repair history", "why_it_matters": "Changes how deterioration, repairs and inspection evidence should be interpreted." }, { "name": "Stern arrangement", "kind": "category", "unit_or_values": "traditional | semi-traditional | cruiser | other | unresolved", "why_it_matters": "Affects steering position, deck exposure, access and available working space." }, { "name": "Propulsion and energy arrangement", "kind": "category", "unit_or_values": "combustion | electric | hybrid | unpowered; installed energy sources recorded", "why_it_matters": "Determines movement capability, replenishment needs and system-specific hazards." }, { "name": "Loading and trim", "kind": "state", "unit_or_values": "observed fore-and-aft trim, list, freeboard and tank or cargo condition", "why_it_matters": "Changes clearance, handling and vulnerability to water ingress." }, { "name": "Hull and watertight integrity", "kind": "state", "unit_or_values": "surveyed condition, observed leakage, defects, evidence date and unknown areas", "why_it_matters": "Supports decisions about movement, continued occupation and repair." }, { "name": "Space use", "kind": "category", "unit_or_values": "cargo | leisure accommodation | residential accommodation | passenger use | mixed | other", "why_it_matters": "Identifies relevant load, access and onboard-service requirements." }, { "name": "Waterway compatibility", "kind": "relation", "unit_or_values": "vessel configuration linked to a route and its dated dimensional and operational restrictions", "why_it_matters": "Avoids assuming that narrowboat identity guarantees access to every canal." } ], "affordances": [ "Assess a proposed route against measured dimensions, loading and waterway restrictions.", "Determine whether the vessel can move under its own power or requires a suitable towing arrangement.", "Plan lock passage, turning and mooring around the vessel's steering position and handling limits.", "Identify inspections or repairs needed before navigation or occupation.", "Assess proposed cargo, accommodation or energy-system changes for effects on trim, clearances and onboard safety.", "Plan fuel, charging, water and waste-service stops for the installed systems." ], "agent_conduct": { "may": [ "Describe narrowboats, their dimensions and their history on British canals.", "Monitor a boat's systems, such as bilge, batteries and carbon monoxide alarms, for the owner who authorised it.", "Help plan routes, locks and moorings within navigation authority rules." ], "must_not": [ "Operate locks or move a boat without a competent person in control.", "Disable carbon monoxide or smoke alarms aboard.", "Discharge sewage, fuel or oily bilge water into the canal.", "Overstay or moor where navigation authority rules forbid it on the owner's behalf." ], "requires_human": [ "Working a lock flight or passing through tunnels.", "Any decision in an emergency such as sinking, fire or a person in the water." ] }, "ethics": { "considerations": [ "Narrowboats are homes for many people who face insecure housing and limited services.", "Canals are shared heritage and wildlife habitat." ], "affected_parties": [ "Boaters and their families", "Other canal users", "Canal wildlife" ] }, "owners": { "steward": "The boat's owner; the navigation authority licenses boats on its waterways.", "master_systems": [ "Navigation authority boat licence registers" ] }, "visual_identification": [ "A very long, narrow steel boat with a flat bottom and a cabin running most of its length.", "A tiller steering position at the stern, often with traditional painted decoration." ], "failure_modes_and_hazards": [ "Carbon monoxide poisoning from stoves, heaters or engines.", "Sinking or capsizing in locks if the boat catches on a sill or gate.", "Falls into the water, especially in winter." ], "standards_and_regulation": [ "Boat Safety Scheme examination requirements for boats on inland waterways, Canal and River Trust and the Environment Agency." ], "what_it_is_for": [ "Narrowboats are encountered on British inland waterways, particularly canals whose locks constrain vessel width.", "Originally developed for carrying freight, they are also used for cruising, residential accommodation and heritage activities.", "Route planning requires checking the individual vessel against lock dimensions, bridge clearances, water depth and local navigation conditions." ] }, "sources": [ { "id": "wikidata", "title": "Wikidata item Q649870: narrowboat", "url": "https://www.wikidata.org/wiki/Q649870", "url_status": "live", "what_it_supports": "identity and sense of the item", "checked_by": "wikidata-api" }, { "id": "wikipedia-en", "title": "Wikipedia: Narrowboat", "url": "https://en.wikipedia.org/wiki/Narrowboat", "url_status": "live", "what_it_supports": "general description of the item", "checked_by": "wikidata-api sitelink" } ], "structure": { "bundles": [ { "id": "narrowboat-identity", "name": "Narrowboat identity", "description": "Establish membership of the vessel kind and distinguish configuration from use.", "rationale": "A narrow hull or canal location alone does not establish narrowboat identity, while conversions can obscure an established identity.", "layers": [ { "id": "kind-boundary", "name": "Kind boundary", "description": "Assess design form and provenance against neighbouring vessel kinds.", "findings": [ { "id": "design-and-form-evidence", "name": "Design and form evidence", "description": "Record the evidence supporting narrowboat classification without imposing an unresearched universal dimensional cutoff.", "questions": [ { "text": "Which measured hull features and design records support classifying this vessel as a narrowboat?", "kind": "definition", "id": "design-and-form-evidence-q01" }, { "text": "What distinguishes this example from a wide-beam canal boat, barge or other narrow inland vessel?", "kind": "boundary", "id": "design-and-form-evidence-q02" } ] } ] }, { "id": "configuration-and-conversion", "name": "Configuration and conversion", "description": "Separate propulsion, stern form and conversion history from kind membership.", "findings": [ { "id": "identity-through-alteration", "name": "Identity through alteration", "description": "Track original and current arrangements where motorisation, cabin additions or residential conversion affect interpretation.", "questions": [ { "text": "Was the vessel built as a powered boat, an unpowered butty or another documented configuration?", "kind": "provenance", "id": "identity-through-alteration-q01" }, { "text": "Which alterations changed its stern, working spaces or accommodation, and what evidence connects the current vessel to its earlier form?", "kind": "provenance", "id": "identity-through-alteration-q02" } ] } ] } ] }, { "id": "hull-and-waterway-fit", "name": "Hull and waterway fit", "description": "Relate hull dimensions and loading to the constrained spaces of canal navigation.", "rationale": "A narrowboat's usable routes depend on its complete operating envelope and the particular restrictions encountered.", "layers": [ { "id": "passage-envelope", "name": "Passage envelope", "description": "Establish dimensions in the configuration proposed for movement.", "findings": [ { "id": "restricted-passage-clearance", "name": "Restricted passage clearance", "description": "Assess length, width and overhead projections against locks, bridges and tunnels.", "questions": [ { "text": "What are the maximum length, beam and air draught with the current fenders, chimney, solar panels and other projections?", "kind": "measurement", "id": "restricted-passage-clearance-q01" }, { "text": "Which restrictions on the proposed route have verified clearance, and which require further measurement or removal of fittings?", "kind": "action", "id": "restricted-passage-clearance-q02" } ] } ] }, { "id": "loading-and-underwater-clearance", "name": "Loading and underwater clearance", "description": "Assess how contents and water conditions change the hull's navigable envelope.", "findings": [ { "id": "draught-trim-and-freeboard", "name": "Draught, trim and freeboard", "description": "Record the loading state behind any claim of depth clearance or safe hull openings.", "questions": [ { "text": "What are the deepest draught, list and relevant freeboard measurements with current tank, cargo and passenger loads?", "kind": "measurement", "id": "draught-trim-and-freeboard-q01" }, { "text": "How would the proposed load change affect grounding risk, bridge clearance and the height of openings above water?", "kind": "action", "id": "draught-trim-and-freeboard-q02" } ] } ] } ] }, { "id": "movement-and-canal-handling", "name": "Movement and canal handling", "description": "Assess propulsion, steering and practical control in confined waterways.", "rationale": "Independent propulsion, towing and lock handling require different evidence of control and readiness.", "layers": [ { "id": "propulsion-and-control", "name": "Propulsion and control", "description": "Describe how thrust and directional control are produced and their current limitations.", "findings": [ { "id": "movement-readiness", "name": "Movement readiness", "description": "Connect installed equipment or towing arrangements to demonstrated movement capability.", "questions": [ { "text": "Which propulsion, transmission and steering components are fitted, and what recent checks establish their operating state?", "kind": "provenance", "id": "movement-readiness-q01" }, { "text": "What evidence establishes stopping, reversing and turning behaviour, or the control available under tow?", "kind": "measurement", "id": "movement-readiness-q02" } ] } ] }, { "id": "locks-turning-and-mooring", "name": "Locks, turning and mooring", "description": "Assess vessel-specific working arrangements during constrained manoeuvres.", "findings": [ { "id": "confined-water-operations", "name": "Confined-water operations", "description": "Relate vessel length, stern layout, crew access and line arrangements to canal operations.", "questions": [ { "text": "Where are the steering position, usable line attachment points and safe routes between working positions?", "kind": "measurement", "id": "confined-water-operations-q01" }, { "text": "What positioning and line-handling plan addresses lock cills, projections, changing water levels and available turning space?", "kind": "action", "id": "confined-water-operations-q02" } ] } ] } ] }, { "id": "onboard-use-and-services", "name": "Onboard use and services", "description": "Assess working or occupied spaces and the services installed within the narrow hull.", "rationale": "Cargo, leisure and residential configurations create different demands on limited space, utilities and escape arrangements.", "layers": [ { "id": "spaces-and-occupation", "name": "Spaces and occupation", "description": "Relate actual use to access, ventilation and escape.", "findings": [ { "id": "usable-interior-and-decks", "name": "Usable interior and decks", "description": "Record how fit-out and stored contents affect movement and occupation.", "questions": [ { "text": "Which spaces serve cargo, sleeping, cooking or machinery functions, and how are access and exits arranged?", "kind": "definition", "id": "usable-interior-and-decks-q01" }, { "text": "Does the proposed use obstruct ventilation, escape routes or access to equipment requiring inspection?", "kind": "action", "id": "usable-interior-and-decks-q02" } ] } ] }, { "id": "energy-water-and-waste", "name": "Energy, water and waste", "description": "Assess installed services and their replenishment, isolation and discharge arrangements.", "findings": [ { "id": "service-capacity-and-hazards", "name": "Service capacity and hazards", "description": "Connect tanks, batteries, shore connections and combustion appliances to the intended duration and mode of use.", "questions": [ { "text": "What usable fuel, electrical-energy, freshwater and waste capacities are documented, in litres or kWh as appropriate?", "kind": "measurement", "id": "service-capacity-and-hazards-q01" }, { "text": "Which checks establish safe isolation, ventilation, exhaust routing and servicing for the systems actually fitted?", "kind": "action", "id": "service-capacity-and-hazards-q02" } ] } ] } ] }, { "id": "condition-and-operating-evidence", "name": "Condition and operating evidence", "description": "Connect physical inspection and applicable operating requirements to decisions about use.", "rationale": "Afloat appearance and administrative documents provide different evidence; neither alone establishes a narrowboat's present fitness.", "layers": [ { "id": "hull-and-machinery-condition", "name": "Hull and machinery condition", "description": "Assess deterioration, ingress and maintenance needs using evidence appropriate to construction.", "findings": [ { "id": "inspection-and-repair-basis", "name": "Inspection and repair basis", "description": "Record survey coverage, material-specific defects and access to underwater components.", "questions": [ { "text": "What inspection evidence covers the bottom, sides, waterline, openings and propulsion penetrations where fitted?", "kind": "provenance", "id": "inspection-and-repair-basis-q01" }, { "text": "Which defects require repair, monitoring or out-of-water inspection before the proposed use?", "kind": "action", "id": "inspection-and-repair-basis-q02" } ] } ] }, { "id": "navigation-and-use-requirements", "name": "Navigation and use requirements", "description": "Link the vessel and intended activity to applicable authority requirements and supporting records.", "findings": [ { "id": "applicable-evidence", "name": "Applicable evidence", "description": "Distinguish physical suitability from documented permission and inspection requirements for a specified place and use.", "questions": [ { "text": "Which navigation authority, jurisdiction and use category govern the proposed movement or occupation?", "kind": "boundary", "id": "applicable-evidence-q01" }, { "text": "Which licences, inspections or conformity records are required, and what are their issuing bodies, validity periods and coverage?", "kind": "provenance", "id": "applicable-evidence-q02" } ] } ] } ] }, { "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": [ "This is recalled knowledge, with no sources consulted; regulatory applicability and current examination requirements need verification.", "Dimensions are indicative rather than universal limits; historic boats and heavily loaded working craft can differ, especially in draught.", "The listed varieties overlap: stern layout, propulsion history and working purpose are separate classification dimensions." ], "questions": [ { "id": "evidence-confidence-notes-q01", "text": "Which of these check these first hold for the sense of narrowboat 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": [ "Traditional working cargo narrowboat", "Unpowered butty narrowboat", "Traditional-stern motor narrowboat", "Semi-traditional-stern motor narrowboat", "Cruiser-stern motor narrowboat", "Historic horse-drawn narrowboat" ], "questions": [ { "id": "evidence-kinds-q01", "text": "Which of these kinds and varieties hold for the sense of narrowboat this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-identifiers", "name": "Identifiers and schemes", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "scheme": "Canal & River Trust boat index number", "value_or_pattern": "Numeric identifier assigned to an individual boat", "note": "Identifies a registered vessel, not the narrowboat type; other navigation authorities have their own registration systems." }, { "scheme": "Watercraft Identification Number (WIN)", "value_or_pattern": "Structured alphanumeric hull identifier", "note": "Applicable recreational craft may carry a manufacturer-assigned identifier; older terminology includes CIN and HIN." } ], "questions": [ { "id": "evidence-identifiers-q01", "text": "Which of these identifiers and schemes hold for the sense of narrowboat 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": [ "Boat Safety Scheme examination requirements, administered by the Boat Safety Scheme associated with UK inland navigation authorities.", "Recreational Craft Regulations 2017, UK Government: construction and conformity requirements for recreational craft within their scope.", "Navigation bylaws and boat-licensing conditions of the responsible waterway authority, such as the Canal & River Trust." ], "questions": [ { "id": "evidence-standards-and-regulation-q01", "text": "Which of these standards and regulation hold for the sense of narrowboat 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": [ "Historically transporting coal, building materials, agricultural produce and other canal freight.", "Private leisure cruising and holiday hire.", "Residential accommodation, either cruising or at a suitable mooring.", "Passenger trips and floating businesses.", "Heritage operation and demonstration of historic canal transport." ], "questions": [ { "id": "evidence-real-world-use-q01", "text": "Which of these real-world use hold for the sense of narrowboat this model covers, and on what evidence?", "kind": "provenance" } ] }, { "id": "evidence-measurements", "name": "Typical measurements", "description": "Recalled without web access and unsourced; every item is a lead to verify.", "evidence": [ { "quantity": "Beam", "typical_range": "Approximately 2.08-2.13", "unit": "m" }, { "quantity": "Overall length of many modern cruising narrowboats", "typical_range": "Approximately 9-22", "unit": "m" }, { "quantity": "Draught of many modern cruising narrowboats", "typical_range": "Approximately 0.5-0.9", "unit": "m" } ], "questions": [ { "id": "evidence-measurements-q01", "text": "Which of these typical measurements hold for the sense of narrowboat 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": [ "Hull corrosion or damaged underwater fittings causing leaks and flooding.", "A stern caught on a lock cill, or a hull hung on lock fittings, causing dangerous tilting and possible sinking.", "Carbon monoxide accumulation from combustion appliances or engine exhaust.", "Fire or explosion involving fuel, LPG installations, electrical faults or batteries.", "Propeller fouling, grounding or propulsion failure causing loss of manoeuvrability; falls overboard and crushing between boat and bank are additional operational hazards." ], "questions": [ { "id": "evidence-failure-modes-and-hazards-q01", "text": "Which of these failure modes and hazards hold for the sense of narrowboat 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": [ "The type is particularly associated with the narrow canals of England and Wales.", "Lock length, local width restrictions, bridge clearance and water depth determine which routes an individual narrowboat can navigate.", "Wide-beam boats with similar accommodation are used on larger waterways but cannot pass through narrow locks." ], "questions": [ { "id": "evidence-regional-variation-q01", "text": "Which of these regional variation hold for the sense of narrowboat 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": "Canal boat", "difference": "A broader category covering boats used on canals; narrowboats are distinguished by their British narrow-lock dimensions and design tradition." }, { "name": "Wide-beam canal boat", "difference": "Has a greater beam than the narrowboat envelope and requires wider locks and waterways." }, { "name": "Barge", "difference": "An overlapping inland cargo-vessel term, generally associated in British usage with broader vessels; the narrowboat designation specifically reflects narrow-canal constraints." }, { "name": "Houseboat", "difference": "Describes residential use or accommodation design rather than narrow-lock dimensions; a narrowboat can also be a houseboat." } ], "questions": [ { "id": "evidence-neighbours-q01", "text": "Which of these neighbouring kinds and how to tell them apart hold for the sense of narrowboat this model covers, and on what evidence?", "kind": "provenance" } ] } ] } ] } ] }, "openQuestions": [ "What authoritative definition establishes the narrowboat boundary, including dimensional conventions, historic variants and unusual hull forms?", "Which waterway authorities publish reliable lock, bridge, tunnel and depth restrictions, and how should temporary restrictions affect compatibility assessments?", "Which construction and onboard-system standards apply by build date, jurisdiction and private or commercial use, and what does each inspection scheme actually establish?", "What material-specific survey criteria and maintenance evidence support condition decisions for steel, iron, timber and repaired or composite examples?", "Which alterations require renewed assessment of stability, loading, escape provision or conformity, particularly after residential or electric-propulsion conversion?" ], "statistics": { "bundles": 6, "layers": 11, "findings": 19, "questions": 29 } }