{"hunt":"b876ac8402d10c1e","locale":"en-GB","questions":[{"id":"q01","intent":"explain","text":"What does a Boat Safety Scheme examiner check on a liveaboard narrowboat?"},{"id":"q02","intent":"explain","text":"How does a galvanic isolator protect a narrowboat connected to marina shore power?"},{"id":"q03","intent":"explain","text":"What causes condensation inside steel canal boats during British winters?"},{"id":"q04","intent":"explain","text":"How does a 12V leisure battery bank charge while cruising?"},{"id":"q05","intent":"explain","text":"What is an RCD and why does it trip on boat shore power?"},{"id":"q06","intent":"explain","text":"How do sealed flue gas appliances affect BSS requirements aboard?"},{"id":"q07","intent":"explain","text":"What does carbon monoxide alarm placement guidance recommend for narrowboats?"},{"id":"q08","intent":"explain","text":"How does a Victron SmartShunt calculate battery state of charge?"},{"id":"q09","intent":"explain","text":"What is hull blacking and how often do canal boats need it?"},{"id":"q10","intent":"explain","text":"How do cassette toilets differ from pump-out systems for liveaboards?"},{"id":"q11","intent":"howto","text":"How do I prepare my narrowboat for a Boat Safety Scheme examination?"},{"id":"q12","intent":"howto","text":"How can I test a shore power RCD safely on my boat?"},{"id":"q13","intent":"howto","text":"How do I winterise a liveaboard narrowboat without leaving heating running?"},{"id":"q14","intent":"howto","text":"How do I find a parasitic drain on 12V leisure batteries?"},{"id":"q15","intent":"howto","text":"How can I clean and test narrowboat carbon monoxide alarms?"},{"id":"q16","intent":"howto","text":"How do I equalise flooded leisure batteries using a mains charger?"},{"id":"q17","intent":"howto","text":"How do I check a narrowboat gas locker meets BSS requirements?"},{"id":"q18","intent":"howto","text":"How can I reduce window condensation aboard during a damp winter?"},{"id":"q19","intent":"howto","text":"How do I inspect a used narrowboat hull before making an offer?"},{"id":"q20","intent":"howto","text":"How can I safely isolate shore power before electrical maintenance?"},{"id":"q21","intent":"best","text":"What are the best carbon monoxide alarms for a narrowboat cabin?"},{"id":"q22","intent":"best","text":"Which leisure batteries are best for off-grid narrowboat liveaboards?"},{"id":"q23","intent":"best","text":"What is the best shore power lead for UK marina use?"},{"id":"q24","intent":"best","text":"Which dehumidifier works best on a narrowboat during winter?"},{"id":"q25","intent":"best","text":"What is the best battery monitor for a 12V boat system?"},{"id":"q26","intent":"best","text":"Which bilge pump is best for a frequently cruised narrowboat?"},{"id":"q27","intent":"best","text":"What are the best window insulation options for canal boat condensation?"},{"id":"q28","intent":"best","text":"Which antifreeze is best for narrowboat engine winter protection?"},{"id":"q29","intent":"best","text":"What is the best inverter size for a liveaboard narrowboat?"},{"id":"q30","intent":"best","text":"Which smoke and CO alarm combination is best for boat safety?"},{"id":"q31","intent":"compare","text":"AGM versus lithium leisure batteries for a UK liveaboard narrowboat?"},{"id":"q32","intent":"compare","text":"Victron MultiPlus versus separate inverter and charger for narrowboats?"},{"id":"q33","intent":"compare","text":"Galvanic isolator versus isolation transformer for marina shore power?"},{"id":"q34","intent":"compare","text":"Cassette toilet versus pump-out toilet for continuous cruising?"},{"id":"q35","intent":"compare","text":"Solid fuel stove versus diesel heater for narrowboat winter living?"},{"id":"q36","intent":"compare","text":"Numax leisure batteries versus Trojan batteries for canal boats?"},{"id":"q37","intent":"compare","text":"Sterling battery-to-battery charger versus solar charging while cruising?"},{"id":"q38","intent":"compare","text":"FireAngel CO alarm versus marine-rated carbon monoxide alarm?"},{"id":"q39","intent":"compare","text":"Full hull survey versus insurance survey when buying a narrowboat?"},{"id":"q40","intent":"compare","text":"Shore power bollard hookup versus generator for charging boat batteries?"},{"id":"q41","intent":"troubleshoot","text":"Why does my narrowboat shore power RCD trip immediately after connecting?"},{"id":"q42","intent":"troubleshoot","text":"Why do leisure batteries show full voltage but lose charge overnight?"},{"id":"q43","intent":"troubleshoot","text":"How do I fix a carbon monoxide alarm that chirps intermittently?"},{"id":"q44","intent":"troubleshoot","text":"Why does my inverter cut out when the kettle starts?"},{"id":"q45","intent":"troubleshoot","text":"How can I stop damp patches forming behind narrowboat furniture?"},{"id":"q46","intent":"troubleshoot","text":"Why does my battery charger trip the marina bollard breaker?"},{"id":"q47","intent":"troubleshoot","text":"How do I diagnose a narrowboat engine battery not charging?"},{"id":"q48","intent":"troubleshoot","text":"Why is my diesel heater smoking during startup on cold mornings?"},{"id":"q49","intent":"troubleshoot","text":"How can I fix a leaking gas locker drain before BSS inspection?"},{"id":"q50","intent":"troubleshoot","text":"Why does my bilge pump run when the boat seems dry?"},{"id":"q51","intent":"buy","text":"What should I look for in a used narrowboat hull survey?"},{"id":"q52","intent":"buy","text":"Is a £40,000 narrowboat realistic for full-time liveaboard use?"},{"id":"q53","intent":"buy","text":"Is a Victron SmartShunt worth buying for basic battery monitoring?"},{"id":"q54","intent":"buy","text":"What should I check before buying second-hand leisure batteries?"},{"id":"q55","intent":"buy","text":"How much should a pre-purchase narrowboat survey cost in Britain?"},{"id":"q56","intent":"buy","text":"Is a CTEK charger suitable for charging narrowboat leisure batteries?"},{"id":"q57","intent":"buy","text":"What features matter when buying a replacement shore power cable?"},{"id":"q58","intent":"buy","text":"Should I buy a narrowboat with an expired Boat Safety certificate?"},{"id":"q59","intent":"buy","text":"What should I inspect before buying a boat with lithium batteries?"},{"id":"q60","intent":"buy","text":"Is an expensive marine carbon monoxide alarm worth the extra cost?"}],"niche":"UK narrowboat maintenance and safety","site_skeleton":{"sections":["/guides/","/safety/","/electrical/","/maintenance/","/buying/"],"url_style":"slug","cadence":"3 pages/week for the first 8 weeks","monetization":["independent maintenance checklists","affiliate links only where products have been tested or specification-verified","survey and engineer directory referrals with disclosed commercial relationships","downloadable winter-preparation and electrical fault-log 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JD Narrowboats' answer-first winter-insulation angle can be improved with a measured condensation diagnosis, a practical window-material comparison and a specific section on moisture trapped behind furniture."},{"rank":2,"target_qids":["q09","q19","q51"],"title":"Narrowboat Hull Blacking and Used Hull Inspection: What to Check Before You Buy","slug":"narrowboat-hull-blacking-used-hull-inspection","outline":["H2 What is hull blacking on a narrowboat?","H2 How often does a narrowboat hull usually need blacking?","H2 What affects the interval between narrowboat blacking jobs?","H2 What should I inspect on a used narrowboat hull before making an offer?","H2 Which hull defects need a surveyor rather than a visual inspection?","H2 What should a used narrowboat hull survey report include?","H2 How can I use hull condition evidence when negotiating a price?"],"blocks":["tldr","definition","list","steps","faq"],"schema":["Article","FAQPage"],"words":[1900,2700],"displaces":[{"domain":"whiltonmarina.co.uk","url":"https://whiltonmarina.co.uk/narrowboat-blog/tips-for-basic-narrowboat-maintenance"},{"domain":"whiltonmarina.co.uk","url":"https://whiltonmarina.co.uk/buying-a-narrowboat/narrow-boat-surveys-explained.aspx"}],"why":"This tests whether Whilton Marina's concise maintenance and survey coverage can be surpassed by separating visual pre-offer checks from survey-only findings and stating blacking intervals as condition-dependent rather than fixed."},{"rank":3,"target_qids":["q13","q24","q28"],"title":"Winterising a Liveaboard Narrowboat Without Leaving Heating Running","slug":"winterise-liveaboard-narrowboat-without-heating-running","outline":["H2 How do I winterise a liveaboard narrowboat without leaving heating on?","H2 Which water systems can freeze first on a narrowboat?","H2 Which antifreeze is suitable for narrowboat engine winter protection?","H2 How do I protect a narrowboat engine cooling system from frost?","H2 Which dehumidifier setup is practical for a narrowboat in winter?","H2 What should I disconnect or isolate before leaving the boat?","H2 What should I check when I return after a frost?"],"blocks":["tldr","steps","spec_table","list","faq"],"schema":["Article","HowTo","FAQPage"],"words":[1600,2300],"displaces":[],"why":"This is a hypothesis that the cited manufacturer-led winter guidance can be made more useful through a single ordered absence checklist covering water, engine coolant, electrical isolation and humidity control."},{"rank":4,"target_qids":["q04","q14","q16","q42"],"title":"Narrowboat Leisure Battery Charging, Equalisation and Overnight Charge Loss","slug":"narrowboat-leisure-battery-equalisation-overnight-charge-loss","outline":["H2 How does a 12V leisure battery bank charge while cruising?","H2 How can I find a parasitic drain on narrowboat leisure batteries?","H2 Can I equalise flooded leisure batteries with a mains charger?","H2 When should flooded leisure batteries not be equalised?","H2 Why do leisure batteries show full voltage but lose charge overnight?","H2 Which voltage and current readings should I record before replacing batteries?","H2 When should I stop testing and call a qualified marine electrician?"],"blocks":["tldr","definition","steps","spec_table","faq"],"schema":["Article","HowTo","FAQPage"],"words":[2100,3000],"displaces":[],"why":"This hypothesises that the Rolls Battery and Yuasa citation pattern can be improved for UK boat owners by distinguishing charger settings, battery chemistry, surface charge and parasitic-load testing in one decision sequence."},{"rank":5,"target_qids":["q26","q50"],"title":"Choosing a Narrowboat Bilge Pump and Diagnosing a Pump That Runs When the Bilge Looks Dry","slug":"narrowboat-bilge-pump-runs-dry-diagnosis","outline":["H2 Which bilge pump is best for a frequently cruised narrowboat?","H2 What pump capacity does a narrowboat bilge normally need?","H2 Why does my bilge pump run when the boat seems dry?","H2 How can a float switch trigger in a shallow or dirty bilge?","H2 How do I test a bilge pump without creating an electrical hazard?","H2 Which bilge pump faults need immediate investigation?","H2 What should I include in a bilge-pump maintenance routine?"],"blocks":["tldr","comparison_table","steps","list","faq","verdict"],"schema":["Article","FAQPage","HowTo"],"words":[1500,2200],"displaces":[],"why":"This tests whether the cited brand guidance can be made more citable by linking pump selection to actual cruising use, float-switch behaviour, discharge routing and a dry-bilge fault tree."},{"rank":6,"target_qids":["q29","q32","q44","q53"],"title":"Narrowboat Inverter Size, Victron MultiPlus Choices and Kettle Cut-Out Faults","slug":"narrowboat-inverter-size-multiplus-kettle-cut-out","outline":["H2 What inverter size does a liveaboard narrowboat need?","H2 How do I calculate whether a kettle will overload my inverter?","H2 Why does my inverter cut out when the kettle starts?","H2 Is a Victron MultiPlus better than separate inverter and charger units?","H2 Is a Victron SmartShunt worth buying for basic battery monitoring?","H2 Which cable, fuse and battery-bank limits affect inverter performance?","H2 When is a larger inverter the wrong solution?"],"blocks":["tldr","steps","comparison_table","spec_table","verdict","faq"],"schema":["Article","FAQPage"],"words":[2200,3100],"displaces":[],"why":"This hypothesises that Victron-led answers can be complemented by a narrowboat-specific load calculation, including kettle surge demand, cable losses and the difference between inverter capacity and available battery current."},{"rank":7,"target_qids":["q22","q31","q36","q54"],"title":"Leisure Batteries for UK Narrowboats: AGM, Lithium, Numax, Trojan and Used Batteries","slug":"narrowboat-leisure-batteries-agm-lithium-numax-trojan-used","outline":["H2 Which leisure batteries are best for an off-grid narrowboat liveaboard?","H2 Are AGM or lithium leisure batteries better for a UK liveaboard narrowboat?","H2 How do Numax and Trojan leisure batteries compare for canal boat use?","H2 What should I check before buying second-hand leisure batteries?","H2 Which battery specifications matter more than the brand name?","H2 How does charging equipment affect AGM and lithium battery suitability?","H2 When does a cheaper battery bank cost more over its service life?"],"blocks":["tldr","comparison_table","spec_table","pros_cons","verdict","faq"],"schema":["Article","FAQPage","ItemList"],"words":[2400,3400],"displaces":[],"why":"This tests whether the scattered brand and retailer citations can be improved by comparing usable capacity, charging constraints, cycle-life claims and inspection evidence rather than treating brand names as the primary decision factor."},{"rank":8,"target_qids":["q10","q34"],"title":"Cassette Toilet vs Pump-Out Toilet for Continuous Cruising Narrowboats","slug":"cassette-toilet-vs-pump-out-continuous-cruising","outline":["H2 How do cassette toilets differ from pump-out systems on narrowboats?","H2 Is a cassette toilet or pump-out toilet better for continuous cruising?","H2 How often do cassette and pump-out toilets need emptying?","H2 What are the practical costs of cassette and pump-out toilet systems?","H2 Can a narrowboat have a backup toilet system?","H2 What Boat Safety Scheme considerations apply to narrowboat toilet waste systems?","H2 Which toilet system suits a liveaboard crew best?"],"blocks":["tldr","comparison_table","pros_cons","list","verdict","faq"],"schema":["Article","FAQPage"],"words":[1900,2700],"displaces":[{"domain":"jdnarrowboats.com","url":"https://jdnarrowboats.com/our-blog/narrowboat-toilet-systems-ufNzb"}],"why":"This hypothesises that JD Narrowboats' long comparison structure can be improved with continuous-cruiser scenarios, emptying-frequency assumptions, transparent operating-cost ranges and a clear decision verdict."},{"rank":9,"target_qids":["q35"],"title":"Solid Fuel Stove vs Diesel Heater for Narrowboat Winter Living","slug":"solid-fuel-stove-vs-diesel-heater-narrowboat-winter","outline":["H2 Is a solid fuel stove or diesel heater better for narrowboat winter living?","H2 Which heating system keeps a narrowboat warm during an overnight frost?","H2 What ventilation does a solid fuel stove need aboard a narrowboat?","H2 What electrical demand does a diesel heater place on a battery bank?","H2 What are the daily fuel, cleaning and maintenance demands of each system?","H2 Which heating risks should affect a liveaboard decision?","H2 When does a mixed heating setup make sense?"],"blocks":["tldr","comparison_table","pros_cons","spec_table","verdict"],"schema":["Article"],"words":[1700,2400],"displaces":[],"why":"This tests whether manufacturer and safety-source citations can be supplemented by a liveaboard comparison that quantifies routine work, electrical draw, ventilation needs and failure consequences for each heat source."},{"rank":10,"target_qids":["q39","q58"],"title":"Full Hull Survey vs Insurance Survey and Buying a Narrowboat With an Expired Boat Safety Certificate","slug":"full-hull-survey-insurance-survey-expired-boat-safety-certificate","outline":["H2 What is the difference between a full hull survey and an insurance survey?","H2 Which survey should I commission before buying a narrowboat?","H2 What does a full pre-purchase narrowboat survey normally exclude?","H2 Can I buy a narrowboat with an expired Boat Safety certificate?","H2 What should I check before relying on an existing Boat Safety certificate?","H2 How can survey findings and certification affect the offer price?","H2 Which defects should make me pause before exchange or completion?"],"blocks":["tldr","definition","comparison_table","list","faq"],"schema":["Article","FAQPage"],"words":[1800,2600],"displaces":[{"domain":"jdnarrowboats.com","url":"https://jdnarrowboats.com/our-blog/how-much-does-a-narrowboat-survey-cost-2026-guide"},{"domain":"whiltonmarina.co.uk","url":"https://whiltonmarina.co.uk/buying-a-narrowboat/narrow-boat-surveys-explained.aspx"}],"why":"This hypothesises that the survey pages cited from JD Narrowboats and Whilton Marina can be improved by making the scope boundary between insurance, condition and full pre-purchase surveys explicit and connecting it to expired certification risk."},{"rank":11,"target_qids":["q21","q30","q38","q60"],"title":"Carbon Monoxide and Smoke Alarms for Narrowboats: Marine-Rated vs Standard Alarms","slug":"narrowboat-carbon-monoxide-smoke-alarms-marine-rated","outline":["H2 What are the best carbon monoxide alarms for a narrowboat cabin?","H2 Is a combined smoke and carbon monoxide alarm suitable for a boat?","H2 Is a FireAngel CO alarm or marine-rated carbon monoxide alarm better for a narrowboat?","H2 Is an expensive marine carbon monoxide alarm worth the extra cost?","H2 Which approvals, lifespan markings and power supplies should I check?","H2 How many smoke and CO alarms should a narrowboat have?","H2 What should I never assume from a product being labelled marine?"],"blocks":["tldr","comparison_table","spec_table","list","verdict","faq"],"schema":["Article","FAQPage","ItemList"],"words":[1800,2500],"displaces":[],"why":"This tests whether the cited alarm-brand pages can be improved through a specification-led comparison that separates certification, installation suitability, replacement dates and marketing labels."},{"rank":12,"target_qids":["q48"],"title":"Why a Narrowboat Diesel Heater Smokes During Cold-Morning Startup","slug":"narrowboat-diesel-heater-smoking-cold-startup","outline":["H2 Why does my diesel heater smoke during startup on cold mornings?","H2 Which smoke colours suggest fuel, airflow or combustion problems?","H2 Can a weak battery cause diesel heater startup smoke?","H2 How do I check the heater exhaust, intake and fuel supply safely?","H2 When does repeated startup smoke indicate a service is needed?","H2 What should I avoid doing to clear a smoking diesel heater?","H2 How can I reduce cold-start smoking after the fault is fixed?"],"blocks":["tldr","definition","steps","list","faq"],"schema":["Article","HowTo","FAQPage"],"words":[1400,2100],"displaces":[],"why":"This hypothesises that the contested Van Craft and Webasto-style troubleshooting coverage can be improved with a smoke-colour triage path, battery-voltage checks and explicit stop-work limits."},{"rank":13,"target_qids":["q52"],"title":"Is a £40,000 Narrowboat Realistic for Full-Time Liveaboard Use?","slug":"40000-narrowboat-full-time-liveaboard-budget","outline":["H2 Is a £40,000 narrowboat realistic for full-time liveaboard use?","H2 What type and age of narrowboat is commonly available around £40,000?","H2 Which repairs are most likely after buying a lower-budget narrowboat?","H2 How much should I reserve for survey findings, blacking and safety work?","H2 Which liveaboard systems are expensive to upgrade after purchase?","H2 How can I compare a cheaper boat with a more expensive ready-to-live-aboard boat?","H2 When should I walk away from a £40,000 narrowboat?"],"blocks":["tldr","spec_table","list","comparison_table","verdict","faq"],"schema":["Article","FAQPage"],"words":[1800,2600],"displaces":[],"why":"This tests whether the contested Good Boat and Venetian Marina coverage can be improved by separating purchase price from immediate compliance, survey, hull and habitation budgets using dated market evidence."},{"rank":14,"target_qids":["q55"],"title":"How Much Does a Pre-Purchase Narrowboat Survey Cost in Britain?","slug":"pre-purchase-narrowboat-survey-cost-britain","outline":["H2 How much does a pre-purchase narrowboat survey cost in Britain?","H2 What changes the price of a narrowboat hull survey?","H2 What is included in a full condition survey?","H2 What extra costs should I budget alongside the survey fee?","H2 Should I attend the lift-out and survey inspection?","H2 How can I compare two narrowboat survey quotations?","H2 When is the cheapest survey quote a false economy?"],"blocks":["tldr","spec_table","comparison_table","list","faq"],"schema":["Article","FAQPage"],"words":[1500,2200],"displaces":[{"domain":"jdnarrowboats.com","url":"https://jdnarrowboats.com/our-blog/how-much-does-a-narrowboat-survey-cost-2026-guide"},{"domain":"whiltonmarina.co.uk","url":"https://whiltonmarina.co.uk/buying-a-narrowboat/narrow-boat-surveys-explained.aspx"}],"why":"This hypothesises that the contested survey-cost pages can be improved with a dated evidence table of quote components, lift-out charges and exclusions rather than a single headline range."},{"rank":15,"target_qids":["q01","q06","q11","q17"],"title":"Preparing a Liveaboard Narrowboat for a Boat Safety Scheme Examination","slug":"prepare-liveaboard-narrowboat-boat-safety-scheme-examination","outline":["H2 What does a Boat Safety Scheme examiner check on a liveaboard narrowboat?","H2 How do I prepare my narrowboat for a Boat Safety Scheme examination?","H2 How do sealed flue gas appliances affect Boat Safety Scheme requirements?","H2 How do I check whether a narrowboat gas locker meets Boat Safety Scheme requirements?","H2 Which issues can I correct before an examiner arrives?","H2 Which jobs should be carried out by a competent gas or electrical professional?","H2 What documents and access should I provide on examination day?"],"blocks":["tldr","list","steps","faq"],"schema":["Article","HowTo","FAQPage"],"words":[2100,3000],"displaces":[],"why":"This hypothesises that official BSS material can be made easier to cite for owners through a pre-examination sequence that preserves the distinction between an owner's checks and work requiring competent professionals."},{"rank":16,"target_qids":["q07","q15","q43","q49"],"title":"Narrowboat CO Alarm Placement, Chirping Faults and Gas Locker Drain Checks","slug":"narrowboat-co-alarm-placement-chirping-gas-locker-drain","outline":["H2 Where should carbon monoxide alarms be placed on a narrowboat?","H2 How do I clean and test a narrowboat carbon monoxide alarm?","H2 Why does my carbon monoxide alarm chirp intermittently?","H2 How can I check a gas locker drain before Boat Safety Scheme inspection?","H2 What should I do if a gas locker drain is blocked or leaking?","H2 Which alarm symptoms mean I should ventilate and leave the cabin?","H2 How often should I check alarm dates, batteries and gas-locker drainage?"],"blocks":["tldr","steps","list","faq"],"schema":["Article","HowTo","FAQPage"],"words":[1500,2200],"displaces":[],"why":"This tests whether separate official and product-support answers can be made more practical by combining placement, routine testing, chirp diagnosis and a clearly bounded gas-locker drainage check."},{"rank":17,"target_qids":["q02","q05","q12","q20"],"title":"Narrowboat Shore Power Safety: Galvanic Isolators, RCDs and Safe Isolation","slug":"narrowboat-shore-power-rcd-galvanic-isolator-safe-isolation","outline":["H2 How does a galvanic isolator protect a narrowboat on marina shore power?","H2 What is an RCD and why does it trip on boat shore power?","H2 How can I test a shore power RCD safely on a boat?","H2 How do I safely isolate shore power before electrical maintenance?","H2 Which parts of shore-power testing should not be improvised?","H2 What should I check before reconnecting a shore-power supply?","H2 When should repeated RCD trips be investigated by a qualified electrician?"],"blocks":["tldr","definition","steps","faq","list"],"schema":["Article","HowTo","FAQPage"],"words":[1900,2700],"displaces":[],"why":"This hypothesises that institutional and manufacturer references can be made more usable with a shore-power isolation sequence that prevents readers confusing an RCD test button with full fault diagnosis."},{"rank":18,"target_qids":["q23","q33","q41","q57"],"title":"UK Narrowboat Shore Power Leads, RCD Trips and Isolation Transformers","slug":"uk-narrowboat-shore-power-leads-rcd-trips-isolation-transformers","outline":["H2 What is the best shore power lead for UK marina use?","H2 Which features matter when buying a replacement shore power cable?","H2 Is a galvanic isolator or isolation transformer better for marina shore power?","H2 Why does my narrowboat shore power RCD trip immediately after connecting?","H2 Which shore-power lead ratings, connectors and lengths are suitable?","H2 How can I inspect a shore-power lead before plugging in?","H2 Which hookup faults require a marina electrician or boat electrician?"],"blocks":["tldr","comparison_table","spec_table","steps","faq","verdict"],"schema":["Article","FAQPage"],"words":[1900,2700],"displaces":[],"why":"This tests whether existing product and technical citations can be improved through UK marina connector specifications, lead-inspection steps and a fault boundary between onboard equipment and bollard infrastructure."},{"rank":19,"target_qids":["q08","q25","q37","q40"],"title":"Battery Monitors, Battery-to-Battery Chargers, Solar and Shore Power for Narrowboats","slug":"narrowboat-battery-monitor-b2b-solar-shore-power-charging","outline":["H2 How does a Victron SmartShunt calculate battery state of charge?","H2 What is the best battery monitor for a 12V boat system?","H2 Is a Sterling battery-to-battery charger better than solar charging while cruising?","H2 Is marina shore power or a generator better for charging boat batteries?","H2 Which charging sources work together on a liveaboard narrowboat?","H2 What battery-monitor readings should I use to assess charging performance?","H2 Which charging upgrades should come before adding more battery capacity?"],"blocks":["tldr","comparison_table","spec_table","definition","verdict","faq"],"schema":["Article","FAQPage","ItemList"],"words":[2200,3100],"displaces":[],"why":"This hypothesises that the cited charging-brand pages can be complemented by a system-level comparison of charging sources, monitoring accuracy, cruising patterns and generator trade-offs."},{"rank":20,"target_qids":["q46","q47","q56","q59"],"title":"Narrowboat Charging Faults: Bollard Breakers, Engine Charging, CTEK Chargers and Lithium Checks","slug":"narrowboat-charging-faults-ctek-lithium-buying-checks","outline":["H2 Why does my battery charger trip the marina bollard breaker?","H2 How do I diagnose a narrowboat engine battery that is not charging?","H2 Is a CTEK charger suitable for charging narrowboat leisure batteries?","H2 What should I inspect before buying a boat with lithium batteries?","H2 Which charger settings can damage or undercharge a battery bank?","H2 What charging evidence should I ask a seller to provide?","H2 Which charging faults should be diagnosed by a marine electrician?"],"blocks":["tldr","steps","spec_table","list","faq"],"schema":["Article","HowTo","FAQPage"],"words":[2000,2900],"displaces":[],"why":"This tests whether separate charger and lithium-brand answers can be improved with a fault-log method, charger-setting checks and a pre-purchase evidence list for existing lithium installations."}],"generated_at":"2026-09-15T15:00:01.793Z","provider":"codex/gpt-5.6-terra","based_on":["jdnarrowboats.com","whiltonmarina.co.uk"]}