{"product_id":"cooling-exhaust-service-record-pdf","title":"Cooling \u0026 Exhaust Service Record PDF — Raw Water, Heat Exchange \u0026 Exhaust Log","description":"\u003cp style=\"font-size:1.05em;line-height:1.7;\"\u003e\u003cstrong\u003eThe raw water circuit and the exhaust are the two systems that fail quietly, and then all at once.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eA fouled heat exchanger does not set off an alarm. It gives up a little efficiency each season until a hot afternoon at cruising revs turns into an overheat. A carbonised exhaust elbow does not announce itself either — until it takes a turbocharger with it.\u003c\/p\u003e\n\n\u003cp\u003eBoth leave a trail, though, if anyone keeps one. This is that record: a thermal baseline taken while the system is clean, sixteen trend entries against it, and the full chronology of every impeller, anode, strainer clean and exchanger service, with the engine hours beside each.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#0A3F5C;border-left:4px solid #C5A059;border-radius:4px;padding:22px 24px;margin:26px 0;color:#F7F9FA;\"\u003e\n  \u003cp style=\"margin:0 0 4px;font-size:0.72em;letter-spacing:0.14em;text-transform:uppercase;color:#C5A059;font-weight:700;\"\u003eWhat you receive\u003c\/p\u003e\n  \u003cp style=\"margin:0 0 14px;font-size:1.25em;line-height:1.35;color:#FFFFFF;\"\u003eA seven-part record for both systems, kept across seasons\u003c\/p\u003e\n  \u003cul style=\"margin:0;padding-left:18px;line-height:1.75;color:#DCE6EC;\"\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003eA 22-line reference page\u003c\/strong\u003e for the intervals, figures and part numbers you transcribe, with the source and page beside each\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003eA thermal baseline\u003c\/strong\u003e over six RPM steps — sea, raw water in and out, coolant, elbow skin, effectiveness\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003e16 trend entries and 4 full sweeps\u003c\/strong\u003e, with the sea temperature on every single row\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003eA 10-line impeller chronology\u003c\/strong\u003e including how many vanes came back\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003eA 12-line anode chronology\u003c\/strong\u003e, per position, never averaged\u003c\/li\u003e\n    \u003cli\u003e\n\u003cstrong style=\"color:#FFFFFF;\"\u003eA 16-line exhaust inspection\u003c\/strong\u003e plus a backpressure page for what your engineer measured\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color:#0A3F5C;margin:30px 0 8px;\"\u003eA ratio, not a temperature\u003c\/h3\u003e\n\u003cp\u003eEvery absolute temperature in a raw water circuit moves with the sea. A reading taken in February and one taken in August are not comparable, which is exactly why a published “normal” differential is close to useless: it cannot know your sea temperature, your load, your exchanger or your flow rate.\u003c\/p\u003e\n\u003cp\u003eModel T2 gives you an effectiveness ratio instead — a dimensionless figure that survives a change in sea temperature between two readings. Compared against your own commissioning figure, a falling ratio is the earliest quantitative sign of scaling, fouling or a spent anode inside the core, long before a temperature alarm notices anything.\u003c\/p\u003e\n\n\u003cdiv style=\"background:#F7F9FA;border:1px solid #E1E8EC;border-left:4px solid #A2803C;border-radius:4px;padding:20px 22px;margin:26px 0;\"\u003e\n  \u003cp style=\"margin:0 0 6px;color:#0A3F5C;font-weight:700;\"\u003eCount the vanes. Write the number down.\u003c\/p\u003e\n  \u003cp style=\"margin:0;line-height:1.7;\"\u003eAn impeller that comes out with five of six vanes has put one somewhere, and that somewhere is usually the heat exchanger inlet. The vanes-recovered column is the cheapest diagnostic in this document, and the one nobody keeps. Same logic on the anodes: recorded per position, never averaged, because one anode disappearing far faster than the others is a finding in itself and averaging is precisely what hides it.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch3 style=\"color:#0A3F5C;margin:30px 0 8px;\"\u003eOn exhaust backpressure\u003c\/h3\u003e\n\u003cp\u003eInstalling a pressure tap downstream of a turbocharger and running an engine at eighty per cent of rated load to read it is not an owner task. This record has a page for logging what a qualified engineer measured — the reading, the RPM, the method and the name. It does not tell you how to measure it, and it does not tell you to.\u003c\/p\u003e\n\u003cp\u003eWhat it does ask you to do is find the date stamp on your exhaust hose and write it down. That is a date, not an opinion, and a hose that fails in a seaway fills a boat with water and exhaust gas at the same time.\u003c\/p\u003e\n\n\u003ch3 style=\"color:#0A3F5C;margin:30px 0 8px;\"\u003eWho it is for\u003c\/h3\u003e\n\u003cul style=\"line-height:1.75;\"\u003e\n  \u003cli\u003eOwners who have had one overheat and do not intend to have a second\u003c\/li\u003e\n  \u003cli\u003eOwners inheriting a boat with no service history and needing to start one\u003c\/li\u003e\n  \u003cli\u003eAnyone planning a passage where losing the engine is not an inconvenience\u003c\/li\u003e\n  \u003cli\u003eOwners preparing to sell, who want the cooling system to speak for itself\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3 style=\"color:#0A3F5C;margin:30px 0 8px;\"\u003eTechnical specification\u003c\/h3\u003e\n\u003ctable style=\"width:100%;border-collapse:collapse;font-size:0.95em;margin:12px 0 4px;\"\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;width:42%;\"\u003eProduct ID\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003eAML-MECH-2026-03\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eExtent\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003e28 pages · 7 parts · 6 calculation models\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eRegister lines\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003e134 across reference, baseline, trend, chronology and exhaust\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eInteractivity\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003e924 live PDF form fields — 54 tick boxes and 870 entry fields\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eFormats included\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003eA4 and US Letter, both fillable and print-ready\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eInstallations\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003eIndirect or direct cooled marine diesel — no engine-specific data\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eUnits\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003eUnit-neutral — you set them and record which you used\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;color:#0A3F5C;font-weight:600;\"\u003eOffline\u003c\/td\u003e\n\u003ctd style=\"padding:9px 0;border-bottom:1px solid #E1E8EC;\"\u003eNo app, no account, no connection required once downloaded\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3 style=\"color:#0A3F5C;margin:30px 0 8px;\"\u003eWhat it is not\u003c\/h3\u003e\n\u003cp\u003eThis document records, structures and compares figures that you supply. It publishes no temperature range, no backpressure limit and no service interval of its own, and it reaches no conclusion about any engine or installation. It is not a service manual and not engineering advice.\u003c\/p\u003e\n\u003cp\u003eWhere a reading matters, the decision belongs to a qualified marine engineer working from the manufacturer's documentation for your serial number.\u003c\/p\u003e\n\n\u003cp style=\"margin-top:26px;\"\u003e\u003cstrong style=\"color:#0A3F5C;\"\u003eInstant download.\u003c\/strong\u003e Your links appear on screen the moment payment clears, and arrive by email within a minute. They do not expire.\u003c\/p\u003e\n\n\u003cp style=\"font-size:0.9em;color:#5C6B75;line-height:1.65;margin-top:22px;border-top:1px solid #E1E8EC;padding-top:16px;\"\u003e\u003cem\u003e2026 Captain's Edition · Revision 1.0 · AML-MECH-2026-03. Apex Marine Labs designs the organisational process behind good seamanship. Our documents record and organise; they do not replace a certified marine survey, a service manual, or a qualified marine engineer.\u003c\/em\u003e\u003c\/p\u003e","brand":"Apex Marine Labs","offers":[{"title":"2026 Captain's Edition","offer_id":56014142865576,"sku":"AML-MECH-2026-03","price":97.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/1161\/2072\/files\/apex-cooling-exhaust-record-01-cover.webp?v=1789747971","url":"https:\/\/apexmarinelabs.com\/products\/cooling-exhaust-service-record-pdf","provider":"Apex Marine Labs","version":"1.0","type":"link"}