2026Edition · Command Kit · 3 documents
The Engine & Drivetrain Command KitBaseline, Alignment & Cooling
The complete engine cluster: diesel baseline and trend log, drivetrain alignment record, cooling and exhaust record. 120 pages + 9-page Kit Guide.
Free sampleReal pages of the Marine Diesel Baseline & Trend Log, fillable, no email needed. Download US Letter · A4
One payment. Yours to keep.Free sampleDiesel Log pages, no email: US Letter · A4
- Instant download
- A4 and US Letter
- Works offline
- Links never expire
Instant download. You can change your mind within 14 days of your order for a full refund. After that, we do not refund a change of mind. A file that is faulty or not as described is always replaced or refunded. Refund policy
Marine Diesel Baseline & Trend Log
Trend entries at cruise RPM
Drivetrain Alignment & Shaft Record
Cutless bearing play
Cooling & Exhaust Service Record
Trend entries at cruise RPM
- documents
- 3
- pages
- 120
- live fields
- 2,646
- models
- 18
Look before you buy
Real pages of the delivered PDF. Open a page to read it full size.
The page, blank As delivered
Kit Guide page 5 as delivered; printed example row, invented figures.
Every job, by engine hoursOpen Kit Guide page 5
The page, filled Example
The first four lines, example entries; Acrobat Reader calculates the rest.
Not a real boatOpen the filled page
Replaced or refunded Section 3
If a file
- will not download
- will not open
- is corrupt
- is missing pages
- does not contain what this store said it contains
Email us your order number and a short description. We look into it and, at your choice, supply a working file or refund you in full.
Faulty or not as described: a working file or full refund.
No time limitRead section 3
Your next step
Everything in order before you start.
- Instant download
- Working file or full refund
Instant download. You can change your mind within 14 days of your order for a full refund. After that, we do not refund a change of mind. A file that is faulty or not as described is always replaced or refunded. Refund policy
Technical specification
- Documents
- 3
- Size
- 120 pages, 2,646 fields, 18 models
- Formats
- Fillable and Pencil & Print, each in A4 and US Letter
- Calculated in
- Adobe Acrobat Reader on computer, iPhone and Android
- Delivery
- Instant download, links never expire, no account needed
For the careful buyer
Read it all before you decide
5 sections · about 4 minutes · the full brief, nothing held back
01In shortAn engine's history is written in small changes.1 min
An engine's history is written in small changes. Somebody has to write them down.
Every figure that matters about a marine diesel, exhaust temperature, coupling gap, raw water rise, anode wastage, is meaningless as a single reading and decisive as a series. The Engine and Drivetrain Command Kit is the whole cluster bought at once, so that the baseline you set this spring is still there to measure against in four years' time.
What is in the kit
One baseline, one engine-hours axis, three registers
- Marine Diesel Baseline & Trend Log, your manual's figures transcribed once, a commissioning baseline, and sixteen trend entries indexed by engine hours, 41 pages
- Drivetrain Alignment & Shaft Record, all four coupling gaps every session, never averaged into one figure, 38 pages
- Cooling & Exhaust Service Record, raw water temperature rise, exchanger effectiveness and the impeller and anode chronology, 41 pages
Includes a spreadsheet edition: Excel and Numbers. The Marine Diesel Log also comes as one workbook, with its registers and models and a chart of your coolant against your own baseline. The PDFs stay the reference.
02Why the three together beat the three apartA rising exhaust temperature is a cooling question until you check the alignment and find the shaft is dragging.1 min
A rising exhaust temperature is a cooling question until you check the alignment and find the shaft is dragging. The three documents share one commissioning baseline and one engine-hours axis, so a deviation shows up in whichever register is actually responsible for it, rather than in the one you happened to open.
03Where to start, by how she is drivenThe cruising boat that motors out of every harbour.1 min
The cruising boat that motors out of every harbour. Baseline first, in the spring, then the cooling register through the season. Your hours accumulate in short loaded bursts, which is the pattern that wears impellers and anodes fastest.
The boat with a vibration nobody can pin down. Alignment first, and take the vibration reading at a stated RPM before anything is touched. Without that figure, whatever the yard does next cannot be judged.
The boat you have just bought. All three, this season, even if the readings mean nothing yet. A baseline is only worth having if it was taken before the thing you will one day be trying to explain.
The rule every document in the kit obeys
Not one published tolerance, clearance, torque or service interval anywhere in 120 pages + 9-page Kit Guide. Those belong to the maker of your engine and your gearbox, in the revision of the manual that matches your serial number. Each document opens with a reference page where you transcribe your own figures, with the source document and page recorded beside each, and every model measures against that page and nothing else.
04What you receiveEvery figure, edition and format, in one table.1 min
| Kit reference | AML-KIT-MECH |
| Documents | 3, the complete Engine & Drivetrain cluster |
| Extent | 120 pages across the three documents, plus the 9-page Kit Guide |
| Interactivity | 2,646 live PDF form fields across the three documents, plus 244 in the Kit Guide; results calculated in Adobe Acrobat Reader on computer, iPhone and Android |
| Models | 18 reduction models |
| Files | 18: a Start here page, then the three documents and the Kit Guide, each Fillable and Pencil & Print, in A4 and US Letter, plus the Marine Diesel Log spreadsheet edition for Excel and Numbers |
| Kit Guide | Included: the order of work across the three records, and every job on one page, sorted by engine hours for you in Adobe Acrobat Reader |
| Which file to open | Fillable in Adobe Acrobat Reader or Apple Files; Pencil & Print in GoodNotes, Notability or on paper; A4 or US Letter by the paper you print on |
| Tested in | Adobe Acrobat Reader on Mac, iPhone and Android, Apple Files, GoodNotes, Notability |
| Offline | No app, no account, no connection required once downloaded |
As a kit, the three documents cost less than bought one at a time (the price block on this page works out the exact figures from current prices), and the three share one baseline instead of three separate starting points.
05What it is notThese documents record and organise.1 min
These documents record and organise. They are not a service manual, not engineering advice, and not prepared by a qualified marine engineer. They reach no conclusion about any engine or any installation.
Instant download. Your links appear on screen the moment payment clears, and a copy arrives by email, usually within a few minutes. They do not expire.
2026 Edition, Revision 2.1, AML-KIT-MECH. Apex Marine Labs designs the organisational process behind good seamanship.
You already know what to check. What's missing is the order.
Walk aboard with a record, not a memory.
- Instant download
- Fillable or pencil
- Working file or full refund
- One payment, yours to keep
Instant download. You can change your mind within 14 days of your order for a full refund. After that, we do not refund a change of mind. A file that is faulty or not as described is always replaced or refunded. Refund policy
Start the log today, on your own engine
The reference page, the commissioning baseline and the trend log of the Marine Diesel Baseline & Trend Log, fillable in Adobe Acrobat Reader. Your latest entry is set against your baseline as you type.
Free, no email needed. PDF, fillable in Adobe Acrobat Reader.
Optional: the next guides by email
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Questions
Before you buy the Engine & Drivetrain Command Kit
The five questions asked about every document, answered for this kit.
Which file do I open first?
Open the Start here page, then the Kit Guide: it sets the order of work across the three records. Every document and the Kit Guide come in two editions, each in A4 and US Letter. Type in Adobe Acrobat Reader, which is free, or write by hand in GoodNotes, Notability or on paper.
Does it calculate on iPhone or Android?
Yes. In Adobe Acrobat Reader on iPhone or Android every document in the kit calculates as it does on a computer, and the Kit Guide sorts every job by engine hours for you. Entries are saved into the files: no app of ours, no account, no connection.
What does it deliberately not contain?
A service manual or engineering advice. The three records compare your readings with your own manuals and baseline, and reach no conclusion about any engine or installation.
Does the kit suit a power boat?
Yes, if she has an inboard marine diesel. The alignment record is written for a conventional shaft drive. It does not cover saildrives, and no record in the kit covers a saildrive leg.
A4 or US Letter?
Both, for every file in the kit, in both editions. Choose by the paper you print on: A4 in Australia, New Zealand and Europe, US Letter in the United States and Canada. The pages and fields are the same in each.
Before you start