{"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":"2026-04-27T23:23:40","modified_gmt":"2026-04-27T22:23:40","slug":"engine-home","status":"publish","type":"page","link":"https:\/\/maritimehub.co.uk\/engine-home\/","title":{"rendered":"engine"},"content":{"rendered":"\n<!-- =========================================================\nMaritimeHub \u2013 Engine Home (HTML drop-in)\nSame nav pattern as AIS Hub: single tree, animated progress line,\nmobile drawer. Pair with the matching CSS + JS snippets.\n========================================================= -->\n\n<div class=\"mh-eng-mobilebar\" role=\"navigation\" aria-label=\"Engine Room mobile\">\n  <button class=\"mh-eng-mobilebar__toggle\" type=\"button\" id=\"mhEngDrawerOpen\" aria-controls=\"mhEngDrawer\" aria-expanded=\"false\">\n    <svg viewBox=\"0 0 16 16\" fill=\"currentColor\" aria-hidden=\"true\"><rect y=\"2\" width=\"16\" height=\"2\" rx=\"1\"\/><rect y=\"7\" width=\"16\" height=\"2\" rx=\"1\"\/><rect y=\"12\" width=\"16\" height=\"2\" rx=\"1\"\/><\/svg>\n    Contents\n  <\/button>\n  <div class=\"mh-eng-mobilebar__title\">Engine Room<\/div>\n  <span class=\"mh-eng-mobilebar__spacer\"><\/span>\n<\/div>\n\n<div class=\"mh-eng-drawer-backdrop\" id=\"mhEngDrawerBackdrop\" aria-hidden=\"true\"><\/div>\n<aside class=\"mh-eng-drawer\" id=\"mhEngDrawer\" aria-hidden=\"true\" aria-label=\"Engine Room navigation\">\n  <div class=\"mh-eng-drawer__head\">\n    <span class=\"mh-eng-drawer__title\">Engine Room<\/span>\n    <button class=\"mh-eng-drawer__close\" type=\"button\" id=\"mhEngDrawerClose\" aria-label=\"Close menu\">\u00d7<\/button>\n  <\/div>\n  <div class=\"mh-eng-drawer__body\"><\/div>\n<\/aside>\n\n<div class=\"mh-eng-shell\">\n\n  <nav class=\"mh-eng-nav\" id=\"mhEngPrimaryNav\" aria-label=\"Engine Room sections\">\n    <p class=\"mh-eng-nav-title\">Engine Room<\/p>\n    <ul class=\"mh-eng-tree\">\n      <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path \/><\/svg>\n\n      <li class=\"mh-eng-cat\" data-open=\"true\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Engines &amp; Prime Movers<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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-eng-link-tools\" href=\"https:\/\/maritimehub.co.uk\/calculators-data-sheets\/\">Calculators &amp; Data Sheets<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Fuel &amp; Lubrication<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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-eng-link-tools\" href=\"#checklists\">Calculators &amp; Checklists<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Air &amp; Gas Systems<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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 &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<\/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-eng-link-tools\" href=\"#fault-finder\">Fault Finder<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Cooling &amp; Heat Transfer<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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-eng-link-tools\" href=\"#diagrams\">Core Diagrams<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Propulsion Train &amp; Drives<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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\/\">Faults &amp; Troubleshooting<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Steering, Deck &amp; Aux Machinery<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Pumps, Piping &amp; Water<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Boilers, Steam &amp; Thermal<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Electrical Power &amp; Energy<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Automation, Sensors &amp; Monitoring<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\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<\/a><\/li>\n          <li><a href=\"https:\/\/maritimehub.co.uk\/condition-monitoring\/\">Condition Monitoring<\/a><\/li>\n        <\/ul>\n      <\/li>\n\n      <li class=\"mh-eng-cat\" data-open=\"false\">\n        <button class=\"mh-eng-cat-toggle\" type=\"button\">Operations, Safety &amp; Compliance<span class=\"caret\">\u25be<\/span><\/button>\n        <ul>\n          <li><a href=\"https:\/\/maritimehub.co.uk\/permits-to-work-loto\/\">Permits to Work &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      <\/li>\n\n    <\/ul>\n  <\/nav>\n\n  <main class=\"mh-eng-main\">\n\n    <section class=\"mh-eng-hero\">\n      <div class=\"mh-eng-hero-top\">\n        <div class=\"mh-eng-hero-left\">\n          <span class=\"mh-eng-eyebrow\">Engine Room<\/span>\n          <h1>Marine Engineering Hub<\/h1>\n          <p>Built like a real engineer&#8217;s reference: learn, troubleshoot, and run the plant. This page is your hub &mdash; the left menu is your system map.<\/p>\n        <\/div>\n        <div class=\"mh-eng-hero-right\">\n          <img decoding=\"async\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2025\/12\/World-record-800-x-600.webp\" alt=\"Marine engineering hub hero image\" loading=\"lazy\">\n        <\/div>\n      <\/div>\n\n      <div class=\"mh-eng-cta-row\">\n        <a class=\"mh-eng-cta\" href=\"https:\/\/maritimehub.co.uk\/fundamentals-cycles\/\">\n          <img decoding=\"async\" class=\"mh-eng-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-eng-cta-title\">Start Learning<\/div>\n          <div class=\"mh-eng-cta-sub\">Fundamentals &amp; Cycles &rarr; Components &rarr; Real watchkeeping mindset.<\/div>\n        <\/a>\n        <a class=\"mh-eng-cta\" href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting\/\">\n          <img decoding=\"async\" class=\"mh-eng-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-eng-cta-title\">Troubleshoot Now<\/div>\n          <div class=\"mh-eng-cta-sub\">Symptom &rarr; checks &rarr; safe actions &rarr; recovery steps.<\/div>\n        <\/a>\n        <a class=\"mh-eng-cta\" href=\"https:\/\/maritimehub.co.uk\/calculators-data-sheets\/\">\n          <img decoding=\"async\" class=\"mh-eng-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-eng-cta-title\">Tools<\/div>\n          <div class=\"mh-eng-cta-sub\">Calculators, reference sheets, quick numbers on watch.<\/div>\n        <\/a>\n      <\/div>\n    <\/section>\n\n    <section class=\"mh-eng-block\" id=\"on-watch\">\n      <div class=\"mh-eng-block-head\">\n        <h2>On Watch<\/h2>\n        <p>Fast entry points for the common &#8220;engine room reality&#8221; moments.<\/p>\n      <\/div>\n      <div class=\"mh-eng-cards\">\n        <a class=\"mh-eng-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-eng-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-eng-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-eng-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-eng-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-eng-card\" href=\"https:\/\/maritimehub.co.uk\/water-chemistry-treatment\/\">\n          <strong>Boiler water tests due<\/strong>\n          <span>pH, phosphate, chloride, alkalinity &mdash; treatment decisions.<\/span>\n        <\/a>\n      <\/div>\n    <\/section>\n\n    <section class=\"mh-eng-block\" id=\"fault-finder\">\n      <div class=\"mh-eng-block-head\">\n        <h2>Fault Finder<\/h2>\n        <p>Type a symptom and filter common fault paths (fast, practical).<\/p>\n      <\/div>\n      <div class=\"mh-eng-searchrow\">\n        <input id=\"mhFaultSearch\" class=\"mh-eng-search\" type=\"text\" placeholder=\"e.g. high temp, low LO, purifier overflow, reefer warm\u2026\">\n        <button id=\"mhFaultClear\" class=\"mh-eng-btn\" type=\"button\">Clear<\/button>\n      <\/div>\n      <div class=\"mh-eng-faultgrid\" id=\"mhFaultGrid\">\n        <a class=\"mh-eng-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-eng-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-eng-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-eng-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-eng-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-eng-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    <section class=\"mh-eng-block\" id=\"diagrams\">\n      <div class=\"mh-eng-block-head\">\n        <h2>Core Diagrams &amp; Visuals<\/h2>\n        <p>Reference visuals to anchor the systems above.<\/p>\n      <\/div>\n      <div class=\"mh-eng-diagrams\">\n        <div class=\"mh-eng-diagram\">\n          <img decoding=\"async\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/Central-Cooling-System-HT-LT-pptx-15-20484.jpg\" alt=\"HT\/LT + Central Cooler P&amp;ID\" loading=\"lazy\">\n          <div class=\"mh-eng-diagram-cap\">Cooling overview &mdash; where margins are won or lost.<\/div>\n        <\/div>\n        <div class=\"mh-eng-diagram\">\n          <img decoding=\"async\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/Viscotherm-system.gif\" alt=\"Fuel Changeover &amp; Viscosity Control Loop\" loading=\"lazy\">\n          <div class=\"mh-eng-diagram-cap\">Stability and correct monitoring points.<\/div>\n        <\/div>\n        <div class=\"mh-eng-diagram\">\n          <img decoding=\"async\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2026\/01\/IMG_37441-scaled.jpg\" alt=\"Good rounds example\" loading=\"lazy\">\n          <div class=\"mh-eng-diagram-cap\">Train the eye: what &#8220;healthy plant&#8221; looks like.<\/div>\n        <\/div>\n      <\/div>\n    <\/section>\n\n    <section class=\"mh-eng-block\" id=\"checklists\">\n      <div class=\"mh-eng-block-head\">\n        <h2>Checklists &amp; Logs<\/h2>\n        <p>Operational documents that make the site sticky for working engineers.<\/p>\n      <\/div>\n      <div class=\"mh-eng-cards\">\n        <div class=\"mh-eng-card mh-eng-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-eng-card mh-eng-card-static\">\n          <strong>Fuel Changeover Checklist<\/strong>\n          <span>PLACEHOLDER: HFO &harr; MGO steps + limits + monitoring.<\/span>\n        <\/div>\n        <div class=\"mh-eng-card mh-eng-card-static\">\n          <strong>Cooling Trend Log<\/strong>\n          <span>PLACEHOLDER: inlet\/outlet temps, &Delta;P, approach temps.<\/span>\n        <\/div>\n      <\/div>\n    <\/section>\n\n  <\/main>\n\n  <aside class=\"mh-eng-side\">\n    <div class=\"mh-eng-sidebox\">\n      <div class=\"mh-eng-sidebox-header\">Sponsored<\/div>\n      <div class=\"mh-eng-ad-slot\">[the_ad id=&#8221;47885&#8243;]<\/div>\n    <\/div>\n\n    <div class=\"mh-eng-sidebox\">\n      <div class=\"mh-eng-sidebox-header\">Engine Room Photos<\/div>\n      <figure class=\"mh-eng-gallery-figure\" id=\"mhEngineGalleryWrap\">\n        <img decoding=\"async\" id=\"mhEngineGalleryImg\" src=\"https:\/\/maritimehub.co.uk\/wp-content\/uploads\/2024\/06\/2019-04-21-10.07.43-scaled.jpg\" alt=\"Engine room photo\" loading=\"lazy\">\n      <\/figure>\n      <div class=\"mh-eng-gallery-controls\">\n        <button class=\"mh-eng-gallery-btn\" id=\"mhGalleryPrev\" type=\"button\">&larr; Prev<\/button>\n        <button class=\"mh-eng-gallery-btn\" id=\"mhGalleryNext\" type=\"button\">Next &rarr;<\/button>\n      <\/div>\n    <\/div>\n\n    <div class=\"mh-eng-sidebox\">\n      <div class=\"mh-eng-sidebox-header\">Latest Engine Posts<\/div>\n      <ul class=\"mh-eng-rail-links\">\n        <li><a href=\"https:\/\/maritimehub.co.uk\/temperature-control\/\">Temperature Control <i>&rarr;<\/i><\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/water-chemistry-treatment\/\">Water Chemistry &amp; Treatment <i>&rarr;<\/i><\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/refrigeration-chilled-water\/\">Refrigeration &amp; Chilled Water <i>&rarr;<\/i><\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/thermal-recovery\/\">Thermal Recovery <i>&rarr;<\/i><\/a><\/li>\n        <li><a href=\"https:\/\/maritimehub.co.uk\/faults-troubleshooting\/\">Faults &amp; Troubleshooting <i>&rarr;<\/i><\/a><\/li>\n      <\/ul>\n    <\/div>\n\n    <div class=\"mh-eng-sidebox\">\n      <div class=\"mh-eng-sidebox-header\">Sponsored<\/div>\n      <div class=\"mh-eng-ad-slot mh-eng-ad-slot--tall\">300 &times; 600<\/div>\n    <\/div>\n  <\/aside>\n\n<\/div>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Contents Engine Room Engine Room \u00d7 Engine Room 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; Troubleshooting Calculators &amp; Data Sheets Fuel &amp; Lubrication\u25be Fuels Bunkering &amp; Changeover Storage, Heating &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,"c2c-post-author-ip":"","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":32,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46378\/revisions"}],"predecessor-version":[{"id":52497,"href":"https:\/\/maritimehub.co.uk\/?rest_route=\/wp\/v2\/pages\/46378\/revisions\/52497"}],"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}]}}