Approved Engine Course 1 (AEC 1)

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AEC1-M1 · The marine diesel engine

2 lessons

AEC1-M1-A How a small marine diesel works and its main components. Practice in examiner →

How a diesel engine works

Almost every small vessel is driven by a diesel engine, and understanding in plain terms how it turns fuel into rotation is the foundation for operating and looking after it. This lesson explains the diesel cycle and what the engine needs to run.

AEC1-L1.2

The main components and systems

Knowing the main parts and the systems that serve them helps you operate the engine and look after it. This lesson names the key components and the supporting systems every small diesel depends on.

AEC1-M2 · Routine care and common faults

2 lessons

AEC1-M2-A Daily checks, routine maintenance and diagnosing the faults you will actually meet at sea. Practice in examiner →

AEC1-L2.1

Daily checks and routine maintenance

Most breakdowns are prevented by simple, regular checks and servicing, so the routine care of the engine is time well spent. This lesson covers the daily checks before starting and the routine maintenance that keeps a diesel reliable.

AEC1-L2.2

Diagnosing and fixing common faults

A few faults account for most engine failures on small craft, and with a little knowledge you can fix them at sea. This lesson covers the common ones and how to work through them logically.

Aligned to the published MCA syllabus. Official syllabus (GOV.UK).

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