Technical Talk
Your Technical Questions Answered....February 2012
The exterior of my engine is rusty. What could be causing it and is it something which needs attention?
This may be an indication that there is a water leak from a pipe joint or from a gasket or casting. This should be investigated and ...
Your Technical Questions Answered....December 2011
Why is there a lot of noise and vibration coming through the boat, particularly form the stern end?
A common cause of noise and vibration through the boat from the stern is a worn cutlass bearing. The cutlass bearing, which supports the shaft, can be found inside the p-bracket or stern tube, ...
Your Technical Questions Answered....October 2011
How often should I replace my anti-freeze?
Antifreeze is important - not only does it protect your engine from frost & ice damage, it is also a good summer coolant as it will protect all areas of the engine's cooling system against rust and corrosion, so is best used all year round.
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Repowering Your Engine
With the nights drawing in, and the so-called summer almost behind us, in boating terms the end of the season is almost upon us.
Once again it's the time of year to start thinking about any winter jobs and as the Southampton Boat Show is just around the corner, this provides an ideal opportunity to source any information ...
New season.........New fuel?
As we look forward to the new season and begin the usual preparations, this is an ideal time to perhaps consider the new EC Directive applicable to Ultra Low Sulphur Diesel (USLD) fuel which came into effect from 1st January 2011 and how it will affect us boat owners.
The Directive sets the environmental ...
Are you exhausted at the end of the season?
Inspecting and maintaining your engine's system is vital.
Here's how to do it................
Starting at the engine end, it may not be absolutely clear which is the last part of the engine and the first part of the exhaust system.
So the best thing is to start with the water injection elbow and pipe, ...
Winter Maintenance
It's the ideal time of year, with the London Boat Show upon us, to think about winter maintenance and servicing. Correct preparation will ensure a successful boating season, and involves several different areas:-
Hull Condition
If your boat is out of the water, it is an ideal to check and ...
Nannidiesel Hybrid fitted to Broads Cruiser
Since installing the first Nannidiesel Hybrid with a conventional gearbox into a steel canal boat the first Hybrid River Cruiser with ARP Hydraulic Propulsion is now in place.
Hydraulic propulsion has proved to be the most reliable method to drive Broads' type river cruisers whilst also giving the builder ...
Issues at Sea
Regular maintenance of engines and following service schedules are of paramount importance on any craft, wherever you sail. When you head out to sea it's even more important as a breakdown may well not just endanger your own life but risk the lives of your rescuers.
Planning the trip
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The Nannidiesel Hybrid System
The Nannidiesel Hybrid System, which was launched in September 2009 combines with a diesel engine of up to 200hp and has been tested since 2007 to ensure that it can be easily and securely fitted, either intially or as a later option.
The Hybrid System is based on the principles of a generator. The ...
Preparation for the new season
After experiencing the very cold snap this winter, it will be necessary to pay extra attention to your boat, in particular the engine when preparing for the new season.
Firstly check the water level in the header tank. It should be 3/4 inch from the top. If it isn't, replenish ...
Kabola Diesel Powered Combination Boilers
Instant hot water and a powerful heating solution - Home comforts onboard a becoming now becoming expected features today - whether hiring, living aboard or buying a new boat customers are looking for raised standards.
Having to run your engine for half an hour before ...
The Principles behind the Insert Generator
With today's demands for onboard electrical power, both DC and AC becoming more popular, Nanni Diesel has developed an innovative new concept to add to it's already comprehensive range of marine engines.
It's that time of year again when the nights are drawing in and the temperature is cooling off and it is time to start thinking about preparing your boat for storage during the winter months. 'Winterising' an engine is a key maintenance task for any boat owner. Failure to do so ...
Nanni Diesel now offers three new marine engines, 165, 180 & 200hp, based on common rail Toyota blocks from their rugged 4x4 automotive sector. The common rail system used high-pressurised fuel for improved fuel economy and provides robust engine power, while reducing noise and vibration.
Liquid flow rate and pressure are the basic measures of pump performance. Flow rate is commonly measured in litres per second, per minute or per hour or sometimes in cubic metres per hour. Pressure is commonly ...
The circulation of the lubricating oil around the engine has quite rightly been likened to the human blood circulation system. The oil is pumped from the sump through the filter and into the bore holes leading to the main bearings on the crankshaft. After leaving these main bearings, the oil flow is divided. ...
Turn your engine's waste heat into useful domestic hot water with a C-Warm Calorifier. Made in the UK and fitted as standard by leading UK and European boat builders, C-Warm heaters are designed for use at system pressure up to 3 bar (44 psi). Maximum ...
With the introduction of higher output alternators and electronic charge Xsplitters charging systems on boats have vastly improved. To benefit fully from a decrease in recharge time and longer runtime the correct battery choice should be made. When making a battery purchase you need to consider - Battery life ...
Temperature Gauge Problems
Marine engines traditionally have been coupled directly to the propeller drive shaft, perhaps with a stiff flexible coupling between the two. Most of the vibration is sent straight down the shaft, and the engine mounts can't so their job properly because they are strained forwards by propeller thrust. So, vibration gets into the hull, ...
Starter batteries and supply batteries are designed for different tasks. Starter batteries, in order to start the engine, must initially supply a high current level and will then serve as an energy buffer with smaller partial cycles. Supply or domestic batteries, by contrast, are charged at lower current levels for ...
If you haven’t done before, now is an ideal time to start thinking about your boat fuel efficiency. Not only because of the current economic climate and rising fuel prices but also because it can go a small way into helping the environment too.
Alarms instantly if the Sea Strainer blocks..... Why?
Tunnel systems provide a simple cost-effective solution and can be installed at two thirds their diameter below water level. To achieve optimum performance and reduce the risk of damage from surface debris, an immersion depth of one complete tunnel diameter is advised. The longer your tunnel, the ...
With Spring just around the corner, its time to start preparing your boat ready for the season. Whether your boat has been winterised or stored throughout the winter months, there are a few things that you should ensure you do prior to using the boat once again.
The technology behind the Insert ...
Winterisation of Inboard Engines
The Theory Behind Common Rail Engines
Pump Flow Rates & Pressures
Monitoring The Engine Oil Pressure
Why Waste Engine Heat? You've paid for it!
Choosing the right battery...
Dealing with Engine Temperature Problems...
Initially it is important to establish whether you have an overheating problem or a temperature gauge fault. If you suspect a problem then it is a good idea to check the gauge against a thermometer that is known to be accurate. The majority of marine thermostats open ...Why fit an Aquadrive?
Battery Chargers/Charging Converters - always a full battery
Boat Fuel Efficiency
The Sea Strainer Alarm System
Marine engines are cooled by raw sea water, drawn in through the bottom of the hull and pumped through the heat exchanger. Block this vital supply and problems follow immediately. The water pump impeller fails ...Understanding your Bow Thruster in the Inland Waterway Market
Pre-Season Preparation