Navathome Diesel engine Course

An absolute must for all sailors and only £35

Free with Day Skipper and Coastal Yachtmaster theory courses taken with Navathome

This course is perfect for those wishing to go to sea and keep themselves, friends and family safe.

Immediate start no postage required

Navathome online training

  • No classroom pressure
  • Online 3D animated videoes
  • Simple quizzes at every stage
  • Can be completed worldwide
  • More content and information
  • Complete the course at times convenient to you
  • Completion certificate
  • You have a statuary right to opt out of the course within 14 days of booking.

Free trial

No need to guess if the course is going to be good or not. Try it free. At we offer the most comprehensive free trial so you can see how much more advanced it is than other training courses.

Retries until you achieve

Most students achieve their certificate first try but no stress. Have as many goes as you like.
Pass your Day Skipper

User friendly

We welcome feedback and suggestions from our students. We make good use of the feedback to help make our courses the most user friendly available.

Great 3D Videos

Is this the correct course for me?

The diesel engine course covers all you need to know to maintain, fault find and look after your diesel engine so it is ready for use when needed and in an emergency.
The course takes approximately 20 hours to complete, It is continuous assessment so no exam. Your certificate will be available once you have successfully completed the course.

Not convinced?

Over 1000 reviews

Over 1000 five star reviews

Excellent course with amazing 3D videos.
I used the new found knowledge to solve a problem on my land rover. Its ace.

Diesel Engine Theory Syllabus


Checking oil, water, belts, bilges and electrics.


Changing the oil and oil filters, checking annd replacing the air filter and adjusting V belt tension.

Fault finding

Reasons for slow running, starting issues, overheating and more

Types of oil

Making sure you are using the correct oils for the climate and the engine.


On sucessful completion of the course you can print off your certificate.

Why People Choose Us

Navathome is one of the longest providers of RYA courses online. Our automated feedback systems, animated graphics and optional voice-overs give a learning experience unmatched by any of our competitors.

Fast access

Access to you course is immediate when you book, and your learning can start straight away.

Dedicated Team

You are provided with backup and help by our RYA Ocean Yachtmaster instructors.

Support seven days a week

Your instructor will be available from 0900 until 1900 UK time seven days a week to provide help and support should you need it.

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Our Team

We Are Available Worldwide

Navathome provides courses all over the world and will send your RYA pack to any country.

RYA qualifications are recognised in more countries than any other training body.

Go with the RYA and be safe at sea.