Dripless shaft seals
As their name implies, dripless shaft seals are designed to completely stop water from entering a boat’s hull via the stern tube. There are two main types of dripless seals known as face seals and lip seals which many boat manufacturers now fit to production...
Stern gear maintenance
The term “stern gear” encompasses propellers, propeller shafts, shaft couplings, rudder tubes, rudder assemblies, propeller shaft brackets, propeller shaft seals, stern tube assemblies, bearings and more. The stern gear of a boat needs to be checked...
Marine engine electrical system
Boat owners who grew up sailing boats without engines often treat the idea of boat engine maintenance with a fair amount of trepidation, whether inboard or outboard varieties. This trepidation has a tendency to go up a notch when the subject of maintaining an...
Boat engine cooling systems
Some boat engine breakdowns are unavoidable but those caused by lack of maintenance or regular checks can be avoided. Failure to maintain an engine’s cooling system is a well known example of this, so it is well worth spending time checking over the cooling...
Marine diesel exhaust checks
Most marine exhausts are water cooled, with water from the engine’s raw water cooling system used to cool the exhaust gas. The water and exhaust gas mix together in the injection bend, where it turns into steam before cooling and condensing back into water which...
Electric motors and hybrid systems
As with the car industry, in recent years there have been considerable advances with the development of electrically powered propulsion in the leisure marine sector. This has resulted in electric drives which have increased power and much greater ranges than in the...
Marine engine oil system maintenance
The regular maintenance of a marine diesel is key to preventing engine failure at sea. This means doing regular checks of the fuel, cooling, electrical and oil systems. The oil system needs daily checks of the engine oil level and additional checks for oil leaks. It...
Boat engine fuel system
If engines are installed and serviced correctly then most marine engines are very reliable, but they are not infallible and problems are more likely to occur if an engine is not taken care of and inspected from time to time, in addition to carrying out the all...
Diesel engine winterisation
Why is engine winterisation so important? The answer is because an inactive boat engine needs to be protected from corrosion during the winter, caused by the rising humidity levels through the cold months and the salty coastal air. This applies whether the boat is...
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