Marine Electrical Training Online

My passion is vocational education and helping others to succeed, including marine electrical training online.

I formerly worked in marine electrical training, as a marine electrical lecturer and trainer at South Shields Marine School, in the UK.

During that time I was privileged to help upskill trainee electro technical officers, and deck cadets, from companies around the world.

I am so proud to have worked with people from many countries, including Nigeria, India, Qatar, as well as the UK.

Examples of companies whose employees I have trained, include Carnival Cruises, Royal Fleet Auxiliary, and the UK Border Force.

I also trained electrical apprentices from organisations, such as the NHS, and industrial maintenance engineers.

I work in RF Systems & Electrical Training, offering worldwide service. I am proud of my numerous happy clients who have improved their theory knowledge, practised vocational maintenance skills on real machinery, built their confidence, and met their career ambitions.


How Marine Generator Works & Fails


How Does a Marine Diesel Engine Work

Tips for draining oil on a marine diesel engine

Marine Radio Equipment Installation

Single Phasing In Three Phase Marine Induction Motors

Industrial & Marine Induction Motor Servicing Tips

Induction Motor Servicing Tips For Ships & Factories


Car Maintenance Tutoring Course

Car maintenance knowledge is not just for mechanics.

Having a good understanding of how a car works, helps empower you when visiting a repair garage.

The course objective is to equip you with an overview of the main components that make up a vehicle.

Components include the parts which make up an engine, such as the head gasket, cylinder head, and camshaft.

You will also learn about the ancillary components attached to the engine, such as the alternator, and sensors.

Both petrol & diesel engines are covered.

Additionally, I can offer optional tutoring on electric vehicle technology.

In addition to vehicle engine components, vehicle suspension systems are also covered. Examples include steering components & Shock Absorbers.

The aim is to make car maintenance more understandable.

Power Steering Belt Change On Jaguar Diesel Car

How can I make my diesel engine last a long time

How Does a Marine Diesel Engine Work

Morris Minor Electric Motor Conversion Kit

Morris Minor Electric Motor Conversion Kit

Morris Minor conversion to electric motor power is a topic that I am contacted about via platforms such as LinkedIn.

It can be confusing when starting a Morris Minor conversion, to know what parts you need.

When starting a Morris Minor electric conversion, the first thing to decide is what sort of performance you want.

Performance is measured in terms of maximum speed, maximum mileage range on a single charge, and acceleration time.

Let’s first consider maximum speed.

An electric motor is capable of spinning much faster than the original Morris Minor engine.

The original Morris Minor petrol engine ranged in size from 803cc, up to 1098cc, depending on the year of production.

The gearboxes that the engines were attached to, were also uprated in the later version (known as the ribbed case gearboxes).

For argument’s sake, let’s assume the maximum original Morris Minor engine speed is 6000 RPM.

That means that the Crankshaft (spinning output shaft from the engine) is rotating 6000 times in a minute.

The Crankshaft is attached to the car’s gearbox (input side), via a clutch mechanism.

At the other end of the gearbox, is a rotating output shaft.

The engine and gearbox layout on a Morris Minor is known as longitudinal, which means that the gearbox sits at the back of the engine.

By contrast, most modern cars have the engine and gearbox mounted in a ‘transverse’ arrangement, where the gearbox is mounted on the side of the engine.

Transverse Engine/gearbox arrangements are normally used in front-wheel-drive cars, whereas Longitudinal layouts are used in rear-wheel drive vehicles. There are of course always a few vehicles that don’t follow this rule.


To be continued, when I get time, so come back regularly.

I am also working on a conversion kit for the Alfa Romeo 916 GTV


Hospital Cleaning Monitoring Using IOT

Hospital cleaning monitoring can help optimise patient safety.

Hospital cleaning monitoring can be split into two categories:

The two categories are ward cleanliness and cleaning equipment location.

Daily Hospital Ward cleanliness is the responsibility of ward staff such as nurses and housekeepers.

In addition, wards are periodically closed for what is known as ‘deep cleaning’.

Deep cleaning involves taking beds and furniture apart, to clean any hairs and dirt, that may have been missed during regular cleaning.

Once the deep cleaning staff have completed this task, the Ward is sealed airtight, and a special machine pumps special vapour into the ward, to totally kill off any remaining germs.

Once the deep cleaning process has been completed, the hospital ward is ready to be handed back to the ward staff, to re-open.

Hospitals are busy places, and despite periodic deep cleaning, germs may accumulate, his is where IOT can help.

IoT, which is short for the Internet Of Things, allows sensors to monitor a variety of environmental conditions.

This data is then periodically sent from the sensors to a device called a gateway.

The job of the gateway is to put the data received from the sensors, into the Internet ‘cloud’, or a local (in building) server.

By attaching appropriate sensors to areas such as the floors of wards, water supplies and beds, enables fast reactive maintenance to resolve high contamination levels.

By using sensors to ‘know’ when areas of a hospital need cleaning, enables the cleaning schedules to be scheduled based on need, and not fixed set periodic timescales.

Legionnaires Disease procedures are carried out in hospitals on a daily basis.

The disease can spread in water systems that are infrequently used, therefore taps have to be run every day.

The task of running hospital taps & showers is usually carried out by healthcare assistants, or housekeepers.

Taps are run for a minimum of two minutes, and in many hospitals, paper-based recording systems are still used.

The completed paper-based forms are kept, as legal proof that the task has been done. These forms are signed and dated daily.

By incorporating sensors into the water pipes, and feeding the data back to a central location, bacteria levels (Legionnaires disease etc), can be monitored.

The second hospital cleaning monitoring category concerns the location of physical cleaning assets, such as mops, electric floor polishers, and even ‘wet floor’ signs.

In my experience of working in a hospital, equipment tends to move around, and is often hard, to track down its location.

This is due to staff on different shifts, needing equipment, and coming and removing it from where it normally is located.

By incorporating wireless sensors, physical assets can easily be located, which saves time.

Another bonus of incorporating location sensors into cleaning assets is that electrical items can be found for PAT (Portable Appliance Testing).

Author: Craig Miles, founder of Yesway Ltd.

Automating NHS Hospitals Using Robots

Power Steering Belt Change On Jaguar Diesel Car

Power steering belt change is required periodically on most cars.

The exceptions to this are cars with electric power steering, and those with no power steering.

The car that I did the power steering belt change on, is a 2006 Jaguar X-Type 2.2 Diesel.

The very first step was to purchase the correct belt.

Make sure you check that the product code matches suitability for your vehicle.

The first task was to remove the plastic engine cover, as shown in the next photo. The cover is held in place by round rubber supports, and the cover is removed by pulling upwards, from the front first.

Before trying to pull the engine cover off, you need to first remove the oil dipstick, as the top of it is wider than the dipstick cutout, in the engine cover.

Jaguar Engine Cover

After successfully removing the plastic engine cover, the next stage is to remove the battery.

Firstly remove the negative (-) battery terminal, followed by the positive (+).

The reason for firstly removing the negative terminal, is that if the other end of your spanner comes into contact with the cars bodywork, it won’t cause a spark.

You will need a 10mm spanner or socket, to remove the battery terminals.

IMPORTANT: Removing the battery will reset the cars radio, and therefore you will need to have the appropriate security code.

Once the two battery terminals have been removed, you then also need to undo the two nuts holding the battery support clamp.

I found that only the rear nut needed to be taken off completely, as the top plate of the clamp, will rotate out of the way.

Battery Box.

Once the battery has been removed, the battery box lifts out of the cars engine bay.

You will notice from the photo above, that there is a wire attached to the plastic battery box.

This wire, along with a pipe was fixed to the box, but not connected to anything.

You will need to unclip these from the battery box, before lifting clear of the engine bay.

Power Steering Pump

Next task is to unclip the electrical connector from the air intake, as shown in the photo below.

You also need to remove the air intake pipe, as also shown in the photo.

To remove the pipe, you squeeze together the two ‘lugs’ on the clip. This should then allow you to pull the two halves of the pipe apart. Its the front part that needs moving.

Air Intake Pipe.

Next remove the bolt at the front of the power steering cover shown below. You will also need to carefully pull out the release tab, on the other side of the cover (nearest back of engine bay).

Power Steering Belt Cover.

Then remove the bolt shown in the photo below.

Removing support bracket.

And this one!

Now you can start to remove the belt.

Firstly you will need a square socket to fit into the hole on the side of the tensioner pulley.

Once the socket is in place, rotate it in a clockwise direction, to slacken the tension on the belt.

Starting with the bottom of the belt, which goes round the power steering pump, use a long flat blade screwdriver, to gently prise the belt off the pulley.

I really wouldn’t advise using your fingers to pull the belt off. This is because if the tool used to move the tensioner slips, you could trap your fingers.

Once the belt is off the bottom pulley (power steering pump), you can remove it from the top pulley.

At this point you will realise that the belt will not come away from the engine, due to an obstruction.

You need to slacken the screw as shown below (holding the L shaped bracket), and the bracket can be moved out of the way. This then allows the belt to be removed.

Fitting the new belt, is a reverse process of the above instructions.

Firstly fit the belt to the bottom pulley, and then the top.

Then release the tensioner, and check that the belt is correctly in place.



Disclaimer: This article is for entertainment purpose only, and I am not at all liable for any consequences of you using it.


(C) 2020 Craig Miles




Supermarket Automation Improvement Using Robotics & IOT

Why Most Supermarket Automation Systems are Currently Rubbish!

Supermarket automation is something I had not thought about, until coronavirus lockdown.

This changed shortly after the start of lockdown when I got a job at a local supermarket.

Having been employed there for nearly four months from 1st April, through to late July, allowed me to observe how it worked.


Let’s consider a supermarket in terms of a machine.

In automation systems, such as PLC‘s , you can break the system down in terms of an input stage, followed by the process stage, and then the output stage.

In a supermarket, the input stage is the delivery of physical products by a delivery truck.

Once the goods, such as baked beans are delivered, then we move on to the ‘process’ stage.

The ‘process’ stage in a conventional supermarket, begins with the goods being taken off the delivery truck on wheeled metal trolleys.

The trolleys are bought into the back of the store, wrapped around with cellophane plastic.

The goods contained on each trolley, are not placed on each delivery trolley, in any logical order.

For example, a typical trolley could include beer, next to breakfast cereal, and toilet rolls.

This seemingly random loading of the delivery trolleys has two problems:

The first problem is that the delivery trolleys are large and heavy, therefore the products need to be unloaded into smaller trolleys so that the products can be taken into the ‘shop floor’.

The supermarket team leaders manually make up smaller trolleys, from the larger delivery trolleys, for staff to stock the shelves with.

This ‘making up’ smaller trolleys of goods, from the larger delivery trolleys, is inefficient in terms of staff time, and ultimately, therefore, money (wages).

Secondly, the time delay involved between unloading from the delivery truck, and getting the products onto the shop shelves, has potential food safety issues.

Some of the products that arrive on the delivery trolleys are refrigerated goods.

Whilst it should be stated, that the refrigerated goods are all on the same delivery trolley, there can be a delay in getting the goods into the store’s refrigerated cabinets.

More on supermarket automation, to come soon……





Garden Design Lighting using Lorawan

Garden design lighting is often used to enhance the visual appeal of gardens, and can be improved further using LoraWAN.

LoraWAN is a wireless communications technology, used to send data between devices.

Advantages of LoraWAN for garden design is its long range, and low power consumption.

The advantages of LoraWAN long range are pretty obvious, and allow lighting control over large areas. This is a positive advantage for large garden areas, such as stately homes and parks.

One issue with loraWAN, is that it is not designed to use optional ‘repeaters’.

Repeaters are devices in wireless radio communications, which receive a weak radio signal, and re-transmit it, at a stronger signal level.

Repeaters solve the problem that occurs with radio signals, at frequencies above 30 MegaHertz (MHz), at which radio signals are ‘line of sight’.

Line of sight means that physical features, such as hills, and buildings made of certain construction materials, will block radio signals.

Therefore physical obstacles ‘could’ block or reduce (attenuate) the LoraWAN radio signal.

Fortunately by careful positioning of LoraWAN devices can be an effective workaround.

So hopefully now you understand that LoraWAN is a wireless technology, used to send data, over wide physical areas, and at low power consumption.

You may however be wondering how it can be used in garden design lighting.

Firstly lets consider how we power lighting in the garden.

There are two methods available, solar and fixed Steel Wire Armoured (SWA) cabling, buried in the ground.

Solar has become a popular option in recent years, due to its ease of installation.

Most solar lights, have a small solar panel incorporated into the light design.

Therefore installation costs are very low (or free), as they just need putting where you want them located.

The disadvantage of solar lighting, can be light output levels.

This is because of the fact that the more light you want, the more power is consumed.

Therefore if you have bright lighting, it will have higher power consumption requirements.

Solar systems have small batteries incorporated, which store the electricity generated on sunny days, by the solar panels.

A bright light that has higher power requirements, will drain a small battery quicker, than a light with lower power requirements.

You might decide to have a larger storage battery, to supply the brighter light.

Unfortunately you would also need a larger solar panel, to charge it.

Hopefully you now understand, that having a decent level of light output from a solar based system, can be an issue.

Of course a system could be designed, using a large separate solar panel, and storage batteries. Such a system would then supply the lights, via cabling.

Such as system may work sufficiently well, in countries with high levels of all year sunshine, but not in many countries.

For most situations where high output garden lighting is required, a wired system is needed.

In its simplest form, a garden lighting system, could consist of a single cable, supplying all the lights.

Traditionally this would mean that all the lights would either be on, or off at the same time.

That’s ok, if you want to be boring, but what if you want to individually control the garden lights separately.

The ‘old fashioned’ method would be to have separate cabling from each light, to a control box.

The disadvantage of this method, is the high cost of installing individual cables.

It is also inflexible, as it is inconvenient and expensive, to alter the lighting at a later date.

A better way is to run a single cable, but control each lighting fixture, using wireless radio signals.

A number of technologies will achieve this, but LoraWAN is ideal, due to its long range.






What Is GNSS Satellite Technology Used For

GNSS is short for ‘Global Navigation Satellite System.

The system consists of a number of space satellites, which transmit positioning and timing data.

The data is then received by GNSS receivers, located on earth.

The receivers use the data received from the satellites, to determine the receiver’s location on earth.

GNSS systems provide global coverage, and a number of separate countries have their own developed systems.

Examples of systems that have been developed by countries include Europe’s ‘GALILEO’ , Russia’s ‘GLONASS’ , and the United States ‘NAVSTAR’.

Performance Considerations

To assess the performance of a system, the following benchmarking criteria are used.

1) Accuracy

2) Integrity

3) Continuity

4) Availability












Life as an NHS Deep Cleaner During Lockdown

Life as an NHS Deep Cleaner during lockdown has been very interesting.

I became an NHS Deep Cleaner, due to Coronavirus.

Prior to the lockdown, I was running Yesway Communications’, which specialises in RF Communications systems and services.

The two main income streams for yesway, are sales of two-way radio equipment to industrial users, and event equipment hire.

Both income streams were affected during following the announcement of the lockdown, especially event hire!

Therefore I decided to look for temporary work, in order to give me some ‘breathing space’ to think.

I saw a couple adverts back in late March, which seemed promising.

The first was to work for the coop, at one of there stores.

The Coop, like many other supermarkets, were recruiting extra staff to cope with the corona virus situation.

The second job that I applied for, was with my local NHS trust, and was labelled ‘Covid19 Temporary support worker’.

I was lucky to get both jobs that I applied for, and started at the Coop on April 1st 2020.

The NHS position took longer to come through, but I was emailed my contract on 12th April 2020.

After successfully completing an enhanced DBS (disclosure & barring service) background check, I started my training.

The initial training was completed online, due to Covid, and included infection control, diversity training, health and safety etc.

Once this was completed, I was invited up the the Lincoln Hospital site, for a final two hours of training, and to collect my NHS staff badge.

The first working week at the hospital, as a deep cleaner, was ‘full on’!

After collecting our uniforms, we headed for one of the MEAU wards.

MEAU is short for ‘Medical Emergency Assessment Unit’, and had been emptied of patients (including Covid patients), ready for ‘deep Cleaning’.

What is Deep Cleaning

Deep cleaning is carried out less frequently than regular hospital cleaning.

I suppose you could call it ‘forensic cleaning’, as you literally take furniture apart, to ensure no trace of dirt is left.

On the first day the experienced permanent deep cleaning staff quickly instructed us, on what to do.

They also pointed out when we had missed something.


This blog post will be expanded, when I have more time.  Come back soon.


Coronavirus Worldwide Fast Response Detection Solution

Coronavirus pandemic detection could be improved using already existing tools at our disposal.

Nearly everyone in the developed world has a smartphone, or

Most smartphones use the Google Android system, which like its Apple competitor, has voice search capabilities.

Amazon and others also have their home smart speaker systems (Alexa).

Voice search is built in already, and is triggered by trigger words, such as ‘Hey Google’.

As most of the world already has voice search technology, it can be used to detect coronavirus.

What tech companies need to do, is modify the algorithm that detects existing trigger words.

The voice search system modification that I imagine, would detect peoples coughs.

Using AI, the system could ideally differentiate between normal coughs, and the sound of a potential Cough caused by Corona-virus.

Even if a quicker to develop and deploy system that detected all coughs, was used, it would still be useful data for tackling coronavirus.

The ‘cough data’ can be sent to local authorities and health responders, who would then know who is potentially at risk, or suffering illness.

This in my humble opinion is a better solution than the one that Israel has apparently introduced. My reason for saying this is because the system that countries such as Israel, USA, UK etc are considering using, identifies ‘historical’ links (via smartphone and internet data) between those diagnosed with coronovirus, and those they have been in contact with, in the past.

The weakness of that approach, is that some people will contract coronavirus, due to exposure to others, but only experience mild symptoms.

If the virus gets really bad, it may be necessary to allow those with the virus, but not experiencing illness, to carry on working in some industries.

By instead using voice search, authorities get up to date live data on who is ill and where.

The voice search coronavirus detection idea, would also provide data on people nearby, who may not own a mobile phone, as their cough would trigger smartphones nearby.

In developing countries, where smartphone ownership is not so widespread, the use of so called ‘smart speakers’, such as Amazons ‘Alexa’ system could solve this.

An Alexa type system, connected to high sensitivity microphones, and deployed in towns and villages, could give local & national authorities an idea of corona virus spread.

These are my thoughts / ideas to help our global response to Coronavirus.

This article originally was written on my linkedin profile: Here