{"schema":"https://ver.cy/schemas/card/1.0.0","id":"vr.tr.bitts","code":"thing-q10729590","url":"https://ver.cy/models/thing/q10729590/","name":"bitts","alternateNames":[],"kind":"thing","status":"published","version":"0.2.0-wave.3","language":"en","classifiers":{"family":"Thing Registry","category":"Physical world and living systems","entryKind":"thing","plane":"PHY","domain":["PHY.BLT"],"industry":[],"navPath":"","tags":[],"facets":{}},"whatItIs":"A pair of short sturdy vertical posts mounted on the deck of a ship or on a quay, used to secure mooring lines, towing lines and anchor cables by taking turns of rope around them, traditionally of timber and now usually of steel, and distinct from single bollards and from cleats; bitts absorb the loads of mooring and towing and are sized to the vessel.","purpose":"Let an agent explain bitts and their use, relay design and load standards from maritime sources, describe how lines are made fast, and distinguish bitts from bollards, cleats and capstans.","scope":{"in":[],"out":[],"boundaries":[]},"distinguishingFeatures":["Paired posts","Rope turns","High load capacity","Deck and quay forms"],"structure":{"bundles":[{"id":"understand","name":"Understand","description":"What bitts are.","layers":[{"id":"definition","name":"Definition","description":"Definition.","findings":[{"id":"definition-finding","name":"Definition","description":"Definition.","questions":[{"text":"What are bitts, and how do they differ from bollards, cleats and capstans?","kind":"definition"},{"text":"Is the question about bitts or another mooring fitting?","kind":"boundary"}]}]},{"id":"kinds","name":"Kinds","description":"Kinds.","findings":[{"id":"kinds-finding","name":"Kinds","description":"Kinds.","questions":[{"text":"What kinds of bitts exist on decks, quays and historic ships?","kind":"definition"},{"text":"Which entry fits the specific kind?","kind":"action"}]}]}]},{"id":"use","name":"Use","description":"Use.","layers":[{"id":"lines","name":"Lines","description":"Making fast.","findings":[{"id":"lines-finding","name":"Lines","description":"Lines.","questions":[{"text":"How are mooring and towing lines made fast on bitts?","kind":"action"},{"text":"Which references are standard?","kind":"provenance"}]}]},{"id":"safety","name":"Safety","description":"Safety.","findings":[{"id":"safety-finding","name":"Safety","description":"Safety.","questions":[{"text":"What safety practices apply to mooring operations and snap-back zones?","kind":"provenance"},{"text":"Which entry fits mooring safety?","kind":"action"}]}]}]},{"id":"design","name":"Design","description":"Design and standards.","layers":[{"id":"standards","name":"Standards","description":"Standards.","findings":[{"id":"standards-finding","name":"Standards","description":"Standards.","questions":[{"text":"What do ISO 13795 and classification rules require for bitt strength and dimensions?","kind":"provenance"},{"text":"Which sources are cited?","kind":"provenance"}]}]},{"id":"materials","name":"Materials","description":"Materials and construction.","findings":[{"id":"materials-finding","name":"Materials","description":"Materials.","questions":[{"text":"How are bitts built and attached to deck structure?","kind":"provenance"},{"text":"Which entry fits ship deck fittings?","kind":"action"}]}]}]},{"id":"context","name":"Context","description":"History and language.","layers":[{"id":"history","name":"History","description":"History.","findings":[{"id":"history-finding","name":"History","description":"History.","questions":[{"text":"How did bitts develop on sailing ships, and what were riding bitts?","kind":"provenance"},{"text":"Which entry fits the history of ship fittings?","kind":"action"}]}]},{"id":"language","name":"Language","description":"Language.","findings":[{"id":"language-finding","name":"Language","description":"Language.","questions":[{"text":"What is the origin of the word bitts and of the phrase bitter end?","kind":"provenance"},{"text":"Which entry fits nautical terminology?","kind":"action"}]}]}]}]},"agentConduct":{"may":["Explain what bitts are and how they differ from bollards and cleats.","Report the rated load of bitts from the vessel's or quay's documentation.","Monitor mooring line tension on systems it is authorized to watch and raise alarms."],"mustNot":["Direct crew to stand in the snap-back zone of a loaded line.","Advise loading bitts beyond their rated capacity or using damaged bitts.","Release or make fast mooring lines on a vessel without the master's or mooring team's instruction.","Hide signs of corrosion or cracking found in inspection."],"requiresHuman":["Any decision to make fast, slip or adjust mooring or towing lines."]},"ethics":{"considerations":["Parting mooring lines kill and maim crew and shore workers.","Mooring failures can endanger the vessel, port and environment."],"affectedParties":["Crew and linesmen","Port workers","Vessel owners"]},"owners":{"steward":"The shipowner for bitts on board; the port authority for bitts on the quay.","roles":[],"masterSystems":[]},"relations":[{"target":"Q1148389","type":"parent","note":"registry parent class"},{"target":"bollard","type":"related","note":"in registry terms"},{"target":"deck fitting","type":"parent","note":"on ships"},{"target":"mooring line","type":"related","note":"and towing lines"},{"target":"cleat","type":"related","note":"a horned fitting"}],"interaction":{"identity":{"applicability":"required","items":["Vercy registry: vr.tr.bitts","Wikidata: Q10729590 (https://www.wikidata.org/wiki/Q10729590)","ISO: 13795 ships and marine technology, mooring bitts"]},"properties":{"applicability":"required","items":["safe working load: up to hundreds of tonnes - on large ships","standard: ISO 13795 reference - ship mooring bitts"]},"recognition":{"applicability":"required","items":["Paired mooring posts","Deck bitts, quay bitts, towing bitts","A bollard is a single post; a cleat is a horned fitting; a capstan is a rotating drum","Two vertical posts on a common base on a deck or quay."]},"capabilities":{"applicability":"required","items":["explain the fitting","relay design standards","describe line handling","distinguish from related fittings"]},"hazards":{"applicability":"required","items":["Overloading and failure under snap loads","Injury from parting lines","Confusing bitts with bollards and cleats"]},"interfaces":{"applicability":"required","items":["ISO 13795 and classification society rules for mooring fittings","OCIMF mooring equipment guidelines","Port authority standards for quay bitts"]},"context":{"applicability":"required","items":["Securing mooring and towing lines.","deck mooring bitts","towing bitts","quay and pier bitts","timber bitts on historic ships","cruciform and double-cross bitts"]}},"sources":[{"title":"Wikidata item Q10729590: bitts","url":"https://www.wikidata.org/wiki/Q10729590","note":"identity and sense of the item"},{"title":"Wikipedia: Bitts","url":"https://en.wikipedia.org/wiki/Bitts","note":"general description of the item"}],"openQuestions":["Should mooring bollard be the primary linked entry?","How should maritime standards be linked?","How should historical timber bitts be recorded?"],"resources":{"spec":"/models/things/publications/thing-q10729590/spec.json"},"provenance":{"origin":"thing registry research (pass 2)","builtFrom":["models/things/publications/thing-q10729590/spec.json"],"providers":["Claude"],"researchStatus":"unreviewed","generatedAt":"2026-09-13T03:52:47Z","builder":"tools/build_cards.py@1.0.0"},"completeness":{"sections":{"classifiers":"filled","whatItIs":"filled","purpose":"filled","distinguishingFeatures":"filled","structure":"filled","agentConduct":"filled","ethics":"filled","owners":"filled","relations":"filled","interaction.identity":"filled","interaction.properties":"filled","interaction.recognition":"filled","interaction.capabilities":"filled","interaction.hazards":"filled","interaction.interfaces":"filled","interaction.context":"filled","sources":"filled"},"notes":{"_gate":"Published through the thing publication gate 1.0 on 2026-10-06T19:51:53+00:00: completeness 1.00; sense: Wikidata description; 2 live sources; review by codex: pass"},"score":1.0}}