{"id":46378,"date":"2025-12-06T11:31:39","date_gmt":"2025-12-06T11:31:39","guid":{"rendered":"https:\/\/maritimehub.co.uk\/?page_id=46378"},"modified":"2026-01-15T00:32:00","modified_gmt":"2026-01-15T00:32:00","slug":"engine-home","status":"publish","type":"page","link":"https:\/\/maritimehub.co.uk\/engine-home\/","title":{"rendered":"engine"},"content":{"rendered":"\n<!-- =========================================================\nMaritimeHub \u2013 Engine Home (FULL PAGE, SAFE)\nHTML ONLY (no <style> \/ no <script>) to avoid WP JSON save errors\nUpdate:\n- DIAGRAM placeholders replaced with real images (3)\n- Right column \"Engine Room Photos\" carousel uses onboard images (5)\nNOTE: Auto-rotate + pause-on-hover is handled by the JS snippet below (WPCode)\n========================================================= -->\n\n<div class=\"mh-engine-shell\">\n\n  <!-- ================= LEFT NAV ================= -->\n  <aside class=\"mh-engine-nav\">\n\n    <div class=\"mh-engine-nav-inner\">\n      <div class=\"mh-engine-nav-title\">Engine Menu<\/div>\n      <p class=\"mh-engine-nav-hint\">\n        Choose a system area below. Each entry opens its own articles, tools and troubleshooting pages\n        <br>inside the Engine section.\n      <\/p>\n      <hr>\n    <\/div>\n\n    <!-- 1) Engines & Prime Movers -->\n    <nav class=\"mh-engine-menu mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"true\">\n        <span class=\"mh-engine-group-index\">1<\/span>\n        <span class=\"mh-engine-group-title\">Engines &amp; Prime Movers<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\" style=\"display:block;\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/fundamentals-cycles\/\">Fundamentals &amp; Cycles<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/two-stroke-marine-engines\/\">Two-Stroke Marine Engines<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/four-stroke-marine-engines\/\">Four-Stroke Marine Engines<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/steam-turbines-in-marine-engineering\/\">Steam Turbines<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/dual-fuel-marine-engines\/\">Dual-Fuel Marine Engines<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/electric-hybrid-marine-propulsion\/\">Electric &amp; Hybrid Propulsion<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/starting-reversing-of-marine-engines\/\">Starting &amp; Reversing<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/engine-performance-tuning\/\">Performance &amp; Tuning<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/emissions-control-in-marine-engines\/\">Emissions Control<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting\/\">Faults &amp; Troubleshooting<\/a><\/li>\n        <li><a class=\"mh-engine-link-tools\" href=\"https:\/\/maritimehub.co.uk\/calculators-data-sheets\/\">Calculators &amp; Data Sheets<\/a><\/li>\n      <\/ul>\n    <\/nav>\n\n    <!-- 2) Fuel & Lubrication Systems -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">2<\/span>\n        <span class=\"mh-engine-group-title\">Fuel &amp; Lubrication Systems<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/fuels\/\">Fuels<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/bunkering-changeover\/\">Bunkering &amp; Changeover<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/storage-heating-transfer\/\">Storage, Heating &amp; Transfer<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/purification-treatment\/\">Purification &amp; Treatment<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/fuel-injection-systems\/\">Fuel Injection Systems<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/cylinder-system-oil\/\">Cylinder &amp; System Oil<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/oil-monitoring-analysis\/\">Oil Monitoring &amp; Analysis<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/contamination-control\/\">Contamination Control<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/environmental-protection-marpol\/\">Environmental &amp; MARPOL VI<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/fuel-lubrication-systems-faults-failures-troubleshooting\/\">Faults &amp; Troubleshooting<\/a><\/li>\n        <li><a class=\"mh-engine-link-tools\" href=\"#checklists\">Calculators &amp; Checklists<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 3) Air & Gas Systems -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">3<\/span>\n        <span class=\"mh-engine-group-title\">Air &amp; Gas Systems<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/scavenging-charge-air-systems\/\">Scavenging &amp; Charge Air<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/starting-air-systems\/\">Starting Air<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/control-instrument-air-systems\/\">Control\/Instrument Air<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/inert-gas-systems-igs\/\">Inert Gas<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/exhaust-system-waste-heat\/\">Exhaust System &amp; Waste Heat<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/ventilation-hvac\/\">Ventilation &amp; HVAC<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/relief-safety-valves-burst-discs\/\">Relief\/Safety Valves &amp; Burst Discs<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/gas-detection-monitoring\/\">Gas Detection &amp; Monitoring<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting-air-gas-systems\/\">Faults &amp; Troubleshooting<\/a><\/li>\n        <li><a class=\"mh-engine-link-tools\" href=\"#fault-finder\">Fault Finder<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 4) Cooling & Heat Transfer -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">4<\/span>\n        <span class=\"mh-engine-group-title\">Cooling &amp; Heat Transfer<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/seawater-cooling\/\">Seawater Cooling<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/ht-lt-freshwater-circuits\/\">HT\/LT Freshwater Circuits<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/oil-fuel-coolers\/\">Oil &amp; Fuel Coolers<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/heat-exchangers\/\">Heat Exchangers<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/temperature-control\/\">Temperature Control<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/water-chemistry-treatment\/\">Water Chemistry &amp; Treatment<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/refrigeration-chilled-water\/\">Refrigeration &amp; Chilled Water<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/thermal-recovery\/\">Thermal Recovery<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting-cooling-heat-transfer\/\">Faults &amp; Troubleshooting<\/a><\/li>\n        <li><a class=\"mh-engine-link-tools\" href=\"#diagrams\">Core Diagrams<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 5) Propulsion Train & Drives -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">5<\/span>\n        <span class=\"mh-engine-group-title\">Propulsion Train &amp; Drives<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/propellers\/\">Propellers<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/shafting-bearings-seals\/\">Shafting, Bearings &amp; Seals<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/gearboxes-clutches\/\">Gearboxes &amp; Clutches<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/thrusters\/\">Thrusters<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/pods-electric-drives\/\">Pods &amp; Electric Drives<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/waterjets-special-drives\">Waterjets &amp; Special Drives<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/alignment-torsional-vibration\/\">Alignment &amp; Torsional Vibration<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting-for-propulsion\/\">Propulsion Faults &amp; Troubleshooting<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 6) Steering, Deck & Aux Machinery -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">6<\/span>\n        <span class=\"mh-engine-group-title\">Steering, Deck &amp; Aux Machinery<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/steering-gear-rudders\/\">Steering Gear &amp; Rudders<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/deck-auxiliary-machinery\/\">Deck &amp; Auxiliary Machinery<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/hydraulics\/\">Hydraulics<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 7) Pumps, Piping, Bilge\/Ballast & Water Systems -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">7<\/span>\n        <span class=\"mh-engine-group-title\">Pumps, Piping &amp; Water Systems<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/pumps-piping\/\">Pumps &amp; Piping<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/bilge-ballast-oily-water\/\">Bilge, Ballast &amp; Oily Water<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/freshwater-ro-sewage\/\">Freshwater, RO &amp; Sewage<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/hvac-refrigeration\/\">HVAC &amp; Refrigeration<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 8) Boilers, Steam & Heat Use -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">8<\/span>\n        <span class=\"mh-engine-group-title\">Boilers, Steam &amp; Thermal Systems<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/boilers-steam-systems\/\">Boilers &amp; Steam Systems<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/thermal-recovery\/\">Thermal Recovery<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/heat-exchangers\/\">Heat Exchangers<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/oil-fuel-coolers\/\">Oil &amp; Fuel Coolers<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 9) Electrical Power, Generation & Energy Management -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">9<\/span>\n        <span class=\"mh-engine-group-title\">Electrical Power &amp; Energy<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/power-generation\/\">Power Generation<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/emergency-power\/\">Emergency Power<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/energy-power-management\/\">Energy &amp; Power Management<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 10) Automation, Instrumentation & Monitoring -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">10<\/span>\n        <span class=\"mh-engine-group-title\">Automation, Sensors &amp; Monitoring<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/automation-ias-ams\/\">Automation (IAS\/AMS)<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/instrumentation-sensors\/\">Instrumentation &amp; Sensors<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/alarm-shutdown-esd-philosophy\/\">Alarm \/ Shutdown \/ ESD Philosophy<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/condition-monitoring\/\">Condition Monitoring<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <!-- 11) Operations, Safety Systems & Documentation -->\n    <div class=\"mh-engine-group\">\n      <button class=\"mh-engine-group-head\" type=\"button\" data-mh-toggle=\"engine-group\" aria-expanded=\"false\">\n        <span class=\"mh-engine-group-index\">11<\/span>\n        <span class=\"mh-engine-group-title\">Operations, Safety &amp; Compliance<\/span>\n        <span class=\"mh-engine-group-caret\">\u25be<\/span>\n      <\/button>\n      <ul class=\"mh-engine-sublist\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/permits-to-work-loto\/\">Permits to Work (PTW) &amp; LOTO<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/ism-sms-risk-assessment\/\">ISM \/ SMS &amp; Risk Assessment<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/standard-operating-procedures\/\">Standard Operating Procedures<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/watchkeeping-logs\/\">Watchkeeping &amp; Logs<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/documentation-forms\/\">Documentation &amp; Forms<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/bridge-engine-interfaces\/\">Bridge\u2013Engine Interfaces<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/cybersecurity-networks\/\">Cybersecurity &amp; Networks<\/a><\/li>\n      <\/ul>\n    <\/div>\n\n  <\/aside>\n\n  <!-- ================= MAIN CONTENT ================= -->\n  <main class=\"mh-engine-main\">\n\n    <!-- HERO -->\n    <section class=\"mh-engine-hero\">\n\n      <!-- HERO TOP ROW: left text + right image -->\n      <div class=\"mh-engine-hero-top\">\n        <div class=\"mh-engine-hero-top-left\">\n          <div class=\"mh-engine-eyebrow\">ENGINE ROOM<\/div>\n          <h1>Marine Engineering Hub<\/h1>\n          <p>\n            Built like a real engineer\u2019s reference: learn, troubleshoot, and run the plant.\n            This page is your hub \u2014 the left menu is your system map.\n          <\/p>\n        <\/div>\n\n        <div class=\"mh-engine-hero-top-right\">\n          <img decoding=\"async\"\n            class=\"mh-engine-hero-img-800x600\"\n            src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/World-record-800-x-600.webp\"\n            alt=\"Marine engineering hub hero image\"\n            width=\"800\"\n            height=\"600\"\n            loading=\"lazy\"\n          >\n        <\/div>\n      <\/div>\n\n      <!-- CTA ROW -->\n      <div class=\"mh-engine-cta-row\">\n\n        <a class=\"mh-engine-cta\" href=\"https:\/\/maritimehub.co.uk\/fundamentals-cycles\/\">\n          <img decoding=\"async\" class=\"mh-engine-cta-icon\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/elearning_4651496.png\" alt=\"\" width=\"34\" height=\"34\" loading=\"lazy\">\n          <div class=\"mh-engine-cta-title\">Start Learning<\/div>\n          <div class=\"mh-engine-cta-sub\">Fundamentals &amp; Cycles \u2192 Components \u2192 Real watchkeeping mindset.<\/div>\n        <\/a>\n\n        <a class=\"mh-engine-cta\" href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting\/\">\n          <img decoding=\"async\" class=\"mh-engine-cta-icon\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/10595761.png\" alt=\"\" width=\"34\" height=\"34\" loading=\"lazy\">\n          <div class=\"mh-engine-cta-title\">Troubleshoot Now<\/div>\n          <div class=\"mh-engine-cta-sub\">Symptom \u2192 checks \u2192 safe actions \u2192 recovery steps.<\/div>\n        <\/a>\n\n        <a class=\"mh-engine-cta\" href=\"https:\/\/maritimehub.co.uk\/calculators-data-sheets\/\">\n          <img decoding=\"async\" class=\"mh-engine-cta-icon\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/tollbox_9847813.png\" alt=\"\" width=\"34\" height=\"34\" loading=\"lazy\">\n          <div class=\"mh-engine-cta-title\">Tools<\/div>\n          <div class=\"mh-engine-cta-sub\">Calculators, reference sheets, quick numbers on watch.<\/div>\n        <\/a>\n\n      <\/div>\n    <\/section>\n\n    <!-- ON WATCH -->\n    <section class=\"mh-engine-block\">\n      <div class=\"mh-engine-block-head\">\n        <h2>On Watch<\/h2>\n        <p>Fast entry points for the common \u201cengine room reality\u201d moments.<\/p>\n      <\/div>\n\n      <div class=\"mh-engine-cards\">\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/ht-lt-freshwater-circuits\/\">\n          <strong>High jacket temperature<\/strong>\n          <span>HT\/LT balance, SW restriction, cooler fouling, control valve stability.<\/span>\n        <\/a>\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/refrigeration-chilled-water\/\">\n          <strong>Reefer \/ chilled water performance drop<\/strong>\n          <span>Superheat, condenser fouling, low charge, oil return, pump flow.<\/span>\n        <\/a>\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/purification-treatment\/\">\n          <strong>Purifier problems<\/strong>\n          <span>Interface, heater temp, bowl fouling, seal water, alarms.<\/span>\n        <\/a>\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/storage-heating-transfer\/\">\n          <strong>Fuel heating \/ viscosity instability<\/strong>\n          <span>Changeover discipline, heater faults, viscosity control loop behaviour.<\/span>\n        <\/a>\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/gas-detection-monitoring\/\">\n          <strong>Gas detection alarm<\/strong>\n          <span>Verify, ventilate, isolate, follow alarm\/shutdown philosophy.<\/span>\n        <\/a>\n        <a class=\"mh-engine-card\" href=\"https:\/\/maritimehub.co.uk\/water-chemistry-treatment\/\">\n          <strong>Boiler water tests due<\/strong>\n          <span>pH, phosphate, chloride, alkalinity \u2014 treatment decisions.<\/span>\n        <\/a>\n      <\/div>\n    <\/section>\n\n    <!-- FAULT FINDER -->\n    <section class=\"mh-engine-block\" id=\"fault-finder\">\n      <div class=\"mh-engine-block-head\">\n        <h2>Fault Finder<\/h2>\n        <p>Type a symptom and filter common fault paths (fast, practical).<\/p>\n      <\/div>\n\n      <div class=\"mh-engine-searchrow\">\n        <input id=\"mhFaultSearch\" class=\"mh-engine-search\" type=\"text\" placeholder=\"e.g. high temp, low LO, purifier overflow, reefer warm\u2026\" >\n        <button id=\"mhFaultClear\" class=\"mh-engine-btn\" type=\"button\">Clear<\/button>\n      <\/div>\n\n      <div class=\"mh-engine-faultgrid\" id=\"mhFaultGrid\">\n        <a class=\"mh-engine-fault\" data-keywords=\"high temp jacket ht lt cooling seawater strainer cooler fouling valve\" href=\"https:\/\/maritimehub.co.uk\/ht-lt-freshwater-circuits\/\">\n          <strong>High Jacket Temp<\/strong>\n          <span>HT\/LT flow, SW restriction, cooler approach temp, valve hunting.<\/span>\n        <\/a>\n        <a class=\"mh-engine-fault\" data-keywords=\"low lube oil pressure pump filter strainer bearing viscosity leak\" href=\"https:\/\/maritimehub.co.uk\/oil-monitoring-analysis\/\">\n          <strong>Low LO Pressure<\/strong>\n          <span>Pumps, filters\/strainers, viscosity, bearing clearances, leaks.<\/span>\n        <\/a>\n        <a class=\"mh-engine-fault\" data-keywords=\"starting air low pressure compressor drain leak non return\" href=\"https:\/\/maritimehub.co.uk\/starting-air-systems\/\">\n          <strong>Starting Air Weak<\/strong>\n          <span>Compressor performance, drains, NRVs, receiver leaks.<\/span>\n        <\/a>\n        <a class=\"mh-engine-fault\" data-keywords=\"purifier overflow water interface heater gravity disc sludge\" href=\"https:\/\/maritimehub.co.uk\/purification-treatment\/\">\n          <strong>Purifier Overflow<\/strong>\n          <span>Interface set-up, heater temperature, gravity disc, bowl fouling.<\/span>\n        <\/a>\n        <a class=\"mh-engine-fault\" data-keywords=\"reefer warm chilled water high superheat condenser fouling low charge\" href=\"https:\/\/maritimehub.co.uk\/refrigeration-chilled-water\/\">\n          <strong>Reefer Warm \/ Low Capacity<\/strong>\n          <span>Superheat, low charge, condenser fouling, oil return issues.<\/span>\n        <\/a>\n        <a class=\"mh-engine-fault\" data-keywords=\"gas alarm detector calibration ventilation inert safety igs\" href=\"https:\/\/maritimehub.co.uk\/gas-detection-monitoring\/\">\n          <strong>Gas Alarm \/ Detector<\/strong>\n          <span>Confirm, ventilate, isolate, follow shutdown logic safely.<\/span>\n        <\/a>\n      <\/div>\n    <\/section>\n\n    <!-- DIAGRAMS -->\n    <section class=\"mh-engine-block\" id=\"diagrams\">\n      <div class=\"mh-engine-block-head\">\n        <h2>Core Diagrams &amp; Visuals<\/h2>\n        <p>Swap these placeholders for your onboard photos\/diagrams (no repeated visuals).<\/p>\n      <\/div>\n\n      <!-- UPDATED: placeholders replaced with images -->\n      <div class=\"mh-engine-diagrams\">\n\n        <div class=\"mh-engine-diagram\">\n          <img decoding=\"async\"\n            class=\"mh-engine-diagram-img\"\n            src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/Central-Cooling-System-HT-LT-pptx-15-20484.jpg\"\n            alt=\"HT\/LT + Central Cooler (P&amp;ID style)\"\n            loading=\"lazy\"\n          >\n          <div class=\"mh-engine-diagram-cap\">Cooling overview \u2014 where margins are won or lost.<\/div>\n        <\/div>\n\n        <div class=\"mh-engine-diagram\">\n          <img decoding=\"async\"\n            class=\"mh-engine-diagram-img\"\n            src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/Viscotherm-system.gif\"\n            alt=\"Fuel Changeover + Viscosity Control Loop\"\n            loading=\"lazy\"\n          >\n          <div class=\"mh-engine-diagram-cap\">Stability and correct monitoring points.<\/div>\n        <\/div>\n\n        <div class=\"mh-engine-diagram\">\n          <img decoding=\"async\"\n            class=\"mh-engine-diagram-img\"\n            src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/IMG_37441-scaled.jpg\"\n            alt=\"Good rounds example (leaks, vibration, temps)\"\n            loading=\"lazy\"\n          >\n          <div class=\"mh-engine-diagram-cap\">Train the eye: what \u201chealthy plant\u201d looks like.<\/div>\n        <\/div>\n\n      <\/div>\n    <\/section>\n\n    <!-- CHECKLISTS -->\n    <section class=\"mh-engine-block\" id=\"checklists\">\n      <div class=\"mh-engine-block-head\">\n        <h2>Checklists &amp; Logs<\/h2>\n        <p>These make the site feel operational. Add a few early and it becomes sticky.<\/p>\n      <\/div>\n\n      <div class=\"mh-engine-cards\">\n        <div class=\"mh-engine-card mh-engine-card-static\">\n          <strong>EOOW Rounds Checklist<\/strong>\n          <span>PLACEHOLDER: Link to a post or downloadable template.<\/span>\n        <\/div>\n        <div class=\"mh-engine-card mh-engine-card-static\">\n          <strong>Fuel Changeover Checklist<\/strong>\n          <span>PLACEHOLDER: HFO\u2194MGO steps + limits + monitoring.<\/span>\n        <\/div>\n        <div class=\"mh-engine-card mh-engine-card-static\">\n          <strong>Cooling Trend Log<\/strong>\n          <span>PLACEHOLDER: inlet\/outlet temps, \u0394P, approach temps.<\/span>\n        <\/div>\n      <\/div>\n    <\/section>\n\n  <\/main>\n\n<!-- ================= RIGHT COLUMN ================= -->\n<aside class=\"mh-engine-adcol\">\n\n  <section class=\"mh-engine-adbox\">\n    <div class=\"mh-engine-adbox-header\">Sponsored<\/div>\n\n    <div class=\"mh-engine-ad-slot\">\n      <?php echo do_shortcode('[the_ad id=\"47885\"]'); ?>\n    <\/div>\n  <\/section>\n\n\n\n\n    <section class=\"mh-engine-gallery\">\n      <div class=\"mh-engine-gallery-header\">Engine Room Photos<\/div>\n\n      <!-- UPDATED: default src set to first onboard image -->\n      <figure class=\"mh-engine-gallery-figure\" id=\"mhEngineGalleryWrap\">\n        <img decoding=\"async\"\n          id=\"mhEngineGalleryImg\"\n          src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2024\/06\/2019-04-21-10.07.43-scaled.jpg\"\n          alt=\"Engine room photo\"\n          loading=\"lazy\"\n        >\n      <\/figure>\n\n      <p class=\"mh-engine-gallery-caption\">\n        .\n      <\/p>\n\n      <div class=\"mh-engine-gallery-controls\">\n        <button class=\"mh-engine-gallery-btn\" id=\"mhGalleryPrev\" type=\"button\">\u25c0 Prev<\/button>\n        <button class=\"mh-engine-gallery-btn\" id=\"mhGalleryNext\" type=\"button\">Next \u25b6<\/button>\n      <\/div>\n    <\/section>\n\n    <section class=\"mh-engine-adbox\">\n      <div class=\"mh-engine-adbox-header\">Latest Engine Posts<\/div>\n      <ul class=\"mh-engine-latest\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/temperature-control\/\">Temperature Control<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/water-chemistry-treatment\/\">Water Chemistry &amp; Treatment<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/refrigeration-chilled-water\/\">Refrigeration &amp; Chilled Water<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/thermal-recovery\/\">Thermal Recovery<\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting\/\">Faults &amp; Troubleshooting<\/a><\/li>\n      <\/ul>\n    <\/section>\n\n    <section class=\"mh-engine-adbox\">\n      <div class=\"mh-engine-adbox-header\">Sponsored<\/div>\n      <div class=\"mh-engine-ad-slot\">300 \u00d7 250 Engine sponsor slot<\/div>\n    <\/section>\n\n  <\/aside>\n\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Engine Menu Choose a system area below. Each entry opens its own articles, tools and troubleshooting pages inside the Engine section. 1 Engines &amp; Prime Movers \u25be Fundamentals &amp; Cycles Two-Stroke Marine Engines Four-Stroke Marine Engines Steam Turbines Dual-Fuel Marine Engines Electric &amp; Hybrid Propulsion Starting &amp; Reversing Performance &amp; Tuning Emissions Control Faults &amp; [&hellip;]<\/p>\n","protected":false},"author":199,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"ngg_post_thumbnail":0,"footnotes":""},"class_list":["post-46378","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46378","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/users\/199"}],"replies":[{"embeddable":true,"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fcomments&post=46378"}],"version-history":[{"count":30,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46378\/revisions"}],"predecessor-version":[{"id":47888,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46378\/revisions\/47888"}],"wp:attachment":[{"href":"https:\/\/maritimehub.co.uk\/?rest_route=%2Fwp%2Fv2%2Fmedia&parent=46378"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}