Author: abmarineservice

On a boat, there are numerous ways for water to find its way in. Whether it’s rainwater, water from the pipes, a leaking propeller shaft, or spray during sailing: some rainwater often ends up in the bilge.

The bilge is the lowest part of a ship, where the two sides meet to form the keel. This is where water, oil, mud, and other rubbish can collect. You ideally want to keep this area clean and dry.

The solution for dampness and dirt in the bilge is a reliable bilge pump. At AB Marine Service you’ll find automatic bilge pumps that do the work themselves as soon as there’s water in the bilge. This way you don’t have to keep an eye on whether pumping is needed.

What a bilge pump does

The bilge pump has a number of functions. Without a bilge pump, your vessel could become heavier, unstable, or sustain damage. In the worst-case scenario, it could even sink your boat. Naturally, we’d rather avoid that.

Pumping water out of the bilge

The main job of the bilge pump is to pump out water that’s ended up in the bilge. This could be rainwater, or water that’s got in through a leak or spray. That’s why a bilge pump is always fitted at the lowest point of the bilge, because water collects there and can be pumped out efficiently.

Protection against oil and debris

The bilge can accumulate much more than just water. Think of small residues of oil, dirt, or even diesel. A strong pump prevents this muck from building up and potentially causing damage. It’s important, however, to regularly check the pump and hoses for blockages or debris.

How does a bilge pump work?

There’s a range of bilge pumps on the market. The key difference is between manual and automatic models.

Manual bilge pump with switch

With a manual bilge pump, you operate the pump yourself using a switch or a control panel. This allows you to decide when to turn the pump on and off. You’ll need to be the one monitoring whether pumping is actually required, though.

Automatic bilge pump with built-in float

When a pump has automatic operation, it has a float switch or built-in float. As the water level rises, the float moves up, and the pump switches on automatically. It then pumps out the bilge water until the level drops below a certain point again.

What do you need to connect a bilge pump?

Connecting a bilge pump is a job most DIYers can manage quite well. The aim is a safe and watertight connection for the pump, with no risk of a short circuit. Make sure you have the following bits and bobs to hand:

• A suitable bilge pump
• A switch or control panel
• Wiring tools
• Sturdy cables
  
• A fuse
• Hose clamps
• A cooling water hose
• A battery connection

Connecting the bilge pump: step-by-step explanation

Right then, time to get that bilge pump wired up. We’ll walk you through it in five straightforward steps. If you’re missing a bit or fancy asking a question, just give our experts a shout.

Step 1: Choose the right location

Find the location of the bilge pump. You’ll want the pump in the lowest part of the hull, as that’s where all the water will drain. Ensure the pump is securely mounted and easy to install. Allow ample space for the hose and wiring.

Step 2: Connect the hose

Attach the drain hose to the pump. Use one or two hose clamps to create a secure and watertight seal. Route the hose upwards, ensuring the outlet always remains above the waterline. This prevents water from flowing back down the hose.

Step 3: Wiring and fuse

Connect the pump to the boat’s power supply. Always fit a separate fuse between the pump and the battery to prevent short circuits or overloading. Neatly conceal the wiring and use waterproof connectors or heat-shrink tubing to prevent corrosion.

Step 4: Switch or automatic mode

Figure out how you want to run the pump. For manual operation, you’ll connect the pump to a switch or a control panel. If you’re going for an automatic setup, you’ll use a float switch. A lot of bilge pumps give you the option to have both.

Step 5: A thorough test

Run a pre-sail installation test. Pour a controlled amount of water into the bilge and check if the pump activates. Ensure there are no leaks at the connections and that the drainage functions as expected. A test run will prevent unwelcome surprises out on the water.

Practical tips for a reliable bilge pump

For the bilge pump to work reliably, here are a few more tips. We’ve put them in a list for you.

• Consider placing the pump in a holder or fitting a small shelf beside it. This will stop the pump from getting mucky or sitting directly in any loose debris.
• Never install wiring without a fuse. Such a simple fuse can save your entire vessel in the event of a short circuit.
• When selecting a pump, be sure to factor in its capacity. For bigger boats, you’ll likely require a pump with a greater litres-per-hour output.
• Always use a non-return valve. This prevents the pumped-out water from flowing back and refilling your bilge.

Frequently asked questions about bilge pumps

We regularly get the same questions about bilge pumps. Therefore, we’re providing some answers to such questions. If your question isn’t here, please don’t hesitate to get in touch.

My bilge pump keeps running. What should I do?

If your automatic bilge pump keeps running, then the float switch is sticking. This can be due to wear and tear or the build-up of dirt or oil. If the pump continues to run, clean it and see if that helps. If not, it’s probably time for a new pump.

Where should the discharge hose lead?

Ensure the drainage hose always exits above the water level. This allows the water to escape freely. We advise against excessive bends in the hose and suggest using hose clips to prevent any leakage.

Does the pump always have to operate automatically?

No, that’s not strictly necessary. Some people prefer manual control to maintain more oversight. Generally, an automatic pump is considered safer, as it will activate even if there’s a leak and you’re not on board.

How do I know if it’s working without water in the bilge?

Ideally, you should test the bilge pump every few weeks when the boat is in the water. Especially if the boat’s been moored for a while or is connected to shore power. Just chucking a bucket of water into the bilge is enough to see if the pump’s still doing its job.

What do you need for large or small motorboats?

For small motorboats, a standard bilge pump will suffice. On bigger boats, you’ll have a deeper bilge and might need a pump with a higher capacity. In that case, it’s sensible to opt for a bigger, more powerful pump.

Buy a bilge pump and more at AB Marine Service

At AB Marine Service, we have everything your boat needs. Order your automatic bilge pump with built-in sensor, including all the connection materials you need to get started safely on board. Do you have any questions? Feel free to get in touch. We’re happy to help.

Many boat owners have a Volvo Penta engine. That’s an excellent choice, but sometimes the water pump can start to leak. Are you experiencing a leaking Volvo Penta water pump? Then you’ve come to the right place. A leaking water pump can cause serious engine damage if not addressed promptly. Especially if you regularly sail in saltwater, you can eventually experience wear, contamination, or a defect in the cooling system. In this article, we will explain how these problems arise, what to look out for, and how to resolve everything with top-quality parts.

Common issues with impeller pumps

The water pump is a crucial part of the cooling system of your Volvo Penta engine. The water pump ensures that cooling water is pumped through the engine, preventing it from overheating. Inside the water pump is an impeller, a fan with flexible rubber blades, which circulates the cooling water.

The water pump and impeller are constantly exposed to water, dirt and temperature fluctuations. Over time, the water pump of a Volvo Penta engine can start to leak. Common causes of leakage include:

• Wear of the shaft seal: The seal prevents water from running into the engine along the rotating shaft. In an old water pump, extensive use in saltwater, or insufficient water lubrication, the shaft seal can wear out. If the water seal is not replaced quickly, the pump shaft can corrode and water can get into the engine oil.
• Clogged weed filter or cooling water supply: A blocked weed filter can prevent seawater from reaching the pump. This causes the impeller to run without sufficient water, leading to overheating and wear.
• Corrosion in the pump housing: Rust and wear can cause metal parts of the casing to deform, preventing O-rings and gaskets from sealing properly and allowing water to leak in through small cracks.

These causes can lead to the water pump leaking and it’s important to intervene promptly. In the following section, you’ll learn how to recognise a leak.

If the pump no longer has sufficient output, first check the following:

• Worn impeller: The impeller forces cooling water through the pump and can wear out or dry out over time. This can cause leakage through the housing or the drain hole of the water pump.
• Broken impeller: A vane can break off or come loose from an old impeller. Rubber particles can enter the cooling system and block hoses, valves, or water pipes, leading to increased wear.

 

Pay attention to these signs on various Volvo Penta engines

A leaking water pump can often be recognised by various signs. By recognising them in time, you can prevent greater damage to your engine. Also, always check if there is a strong stream of cooling water coming from the exhaust; this indicates a well-functioning impeller.

Five engine warnings are:

• Water drips or a puddle at the pump: Are there any drips or even a small puddle under the engine? Check if water is escaping from the drain hole, lid, or seal. This water loss is often the first sign of a problem with the pump.
• Unusual noises from the water pump: If you hear whining, grinding, or tapping noises, this could mean a bearing is worn or a shaft has seized. This also increases the chance of leakage.
• Overheated engine or warning light: If the coolant flow decreases, the engine will overheat faster. You will notice this through a loss of power and possibly a warning light illuminating.
• Foul smells from standing water: With a prolonged leak, water will accumulate around the engine. Standing coolant in the bilge can cause an unpleasant odour.
• Water in the engine oil: If the oil is creamy and starts to look like mayonnaise, water has got in. This water can enter the crankcase, which reduces lubrication and can lead to serious engine damage.

If you recognise any of these signs, it’s important to act quickly. In the next section, you’ll read how to solve the problem.

Solutions for leaks on Volvo Penta engines

Leaks from a Volvo Penta engine’s water pump are often caused by a faulty seal or a worn impeller. The seal, or shaft seal, prevents water from running along the rotating shaft into the engine. Over time, these parts can wear out, causing leaks. In many cases, the entire pump or a complete overhaul kit including the seal and shaft needs to be replaced. Sometimes the pump needs to be dismantled to properly assess the problem.

Have you noticed your water pump is leaking? Then it’s time to resolve this issue. We have outlined a number of steps for you and would like to refer you to our overhaul kits, which you can find on the product page for each specific: Volvo Penta impeller pump or look for complete Volvo Penta service kits for the entire engine maintenance.

Step 1: Stop the engine

You don’t want to sail on with a leaking water pump. Turn off the engine as soon as possible and let it cool down completely before you start your inspection.

Step 2: Check the water pump

Map out where things could go wrong. See where the water is coming from, look for signs of rust or wear and check the pump housing, the seal, the drain hole, the O-ring, and the hoses around the pump. Also, check the engine block for water loss. Don’t forget the impeller either.

Step 3: Replace the impeller

Is the impeller the culprit? If so, you can replace it. Fit a new impeller with plenty of lubricant and always replace the gasket or O-ring to prevent leaks. Note that some parts, such as seals, need to be pressed in for proper operation and sealing. At AB Marine Service, we have the right impeller for every Volvo Penta engine.

Step 4: Replace other parts

Is it not the impeller or are you still experiencing problems after replacing the impeller? Then look at other parts. The seals or shaft seals may be worn. Often these seals and shaft seals are identical in shape and specifications, but they are fitted in reverse of each other. You can also order these parts easily and quickly from AB Marine Service.

Step 5: Replace the water pump or repair kit

If the shaft is worn or the pump housing is pitted or scored, it is wiser to opt for a new pump. Keep in mind that replacing the water pump may depend on how the engine is installed, which affects accessibility and the dismantling of parts. Also, pay attention to purchasing the correct connections and hoses. You are also in the right place with us for a new water pump or a reconditioning kit.

By following these steps, you can effectively resolve water pump leaks on your Volvo Penta engine. In the next section, you’ll learn how to prevent future leaks.

How do I prevent future leaks?

Good maintenance can prevent a leaking water pump. We give you some tips to keep your Volvo Penta engine in good condition:

1. Regularly inspect everything: It is advisable to check your engine at least once a season. For example, look at the water pump, the impeller and seals. Look for signs of wear, rust or small leaks. Also check the waterline, as this is important for assessing the cooling system and detecting potential water intake problems. This gives peace of mind, certainty and the opportunity to act early.
2. Replace the impeller in good time: We recommend replacing the impeller annually or after 200 running hours and checking the housing. Even if the impeller still looks good, the rubber may have lost its flexibility. Proactively replacing the impeller prevents many potential problems. If you are missing impeller blades, also consider that they have entered the cooling system and are likely still somewhere in the system.
3. Keep your weed filter clean: Good flow is of great importance for every water pump. Check now and then to see if your weed filter is not clogged and check hoses and water pipes for blockages. This will extend the lifespan of all parts.

With these tips, you can keep your cooling system in top condition and reduce the risk of leakage. In the final part, you’ll read how to solve problems with top-quality parts.

Resolve all issues with A-grade parts

A leaking water pump is no fun, but with parts from AB Marine Service, you can resolve it expertly. In our webshop, you’ll find water pumps, impellers, seals, shaft seals, and more for various Volvo Penta engines.

Please note: the exact procedure for repairing a water pump varies depending on the engine model. Therefore, always mention your engine’s serial number when searching for parts, so we can help you choose the correct product.

Leaking seals can allow water to pass through, which can lead to water in the engine oil. A new impeller is relatively inexpensive compared to the cost of an overheated engine or a damaged cylinder head. If you find water in the oil, the water pump may be the cause, but also check other potential causes such as the cylinder head gasket. The story that water in oil is always caused by the water pump is not true; get properly informed.

Do you have a question or do you need help at the location where your boat is moored, for example in the harbour or at your berth? Please feel free to contact us. We will be happy to help you find the right parts. This way you can get back on the water carefree with a reliable cooling system.

If you have a marine diesel, you’ll know: maintenance not only determines how smoothly the engine runs, but also how reliable it remains. Yet, we see with boat owners (for example, with a Volvo Penta) that one maintenance step is regularly skipped or remains a bit vague: flushing the engine.

Flushing can help loosen contaminants and deposits in the oil system, particularly in older engines, when there’s uncertainty about their maintenance history, or if the engine frequently idles. In this blog, we’ll explain what engine flushing is, when you should or shouldn’t do it, and what it generally costs.

What is engine flushing?

Engine flushing is the cleaning of the internal oil system. You add a special cleaning agent to the old engine oil, then run the engine briefly according to the product’s instructions, and then drain the oil. The aim is to loosen sludge and accumulated deposits from the crankcase and oil channels, so that this contamination is removed with the old oil. Afterwards, you replace the oil filter and fill with new oil.

On marine diesels, you sometimes see varnish deposits: a thin, sticky film that can range in colour from golden to brown. This can be caused not only by a engine not reaching its operating temperature but also by extended oil change intervals, a lot of idling/low-load running, prolonged periods of inactivity, and contamination (such as water or a bit of diesel in the oil). This deposit can impair lubrication and cause parts to move less smoothly. With heavy contamination (sludge), there’s even a risk that oil passages or a strainer could become partially blocked, which is why flushing is something you undertake deliberately and properly.

When is it advisable to flush an engine?

You don’t need to flush your engine with every service. However, in some cases, it has clear advantages. We’ll list those cases for you.

When the engine doesn’t run much

Boat engines that run infrequently often benefit from a flush. This is because they don’t often reach operating temperature, and the stagnant oil ages. This can lead to contamination, (partial) blockages, and the formation of acids and ‘black sludge’ in the crankcase. A flush can reduce this.

When the engine idles a lot

Also when the engine primarily runs at idle, the system doesn’t always reach an optimal temperature. This promotes oxidation of the engine oil and lacquer deposits. This, therefore, affects lubrication and the oil’s performance. In cases of heavy soiling, it can even (partially) block oilways.

When the engine has direct cooling

In the case of direct-cooled diesel engines, they often run cooler than closed systems. This gives dirt and the formation of ‘black sludge’ more of a chance. For direct-cooled engines, it can therefore be advisable to flush them slightly more often, especially if the engine runs at low load a lot or the maintenance history is unclear.

When the maintenance history is unknown

Perhaps you’ve bought a boat with an unclear maintenance history. In that case, the oil might not always have been changed on time. A flush reduces the risk of hidden contamination in the engine block and ensures a fresh start.

When the engine oil is old

If engine oil remains in the block for too long, it loses its lubricating and cleaning properties. Additives become depleted, dirt can accumulate, and acids may start to form. This leads to increased wear on components such as the bearings.

Should you have further doubts about the engine’s condition, it can also be helpful to follow a step-by-step guide for cleaning an diesel engine. Also in the case of a smoking diesel engine solutions are possible.

In what ways can you flush an engine?

There are several ways to flush an engine. Depending on the extent of the deposits, you can opt for using a cleaning agent, flushing with a standard flushing oil, or flushing with a more powerful flushing oil. We will cover these three options.

Add Oil System Flush to used oil

The most popular and cost-effective way to flush your engine is with a cleaning agent. We recommend Oil System Flush. This is a concentrated cleaner that you add to the old, warm engine oil before draining it.

This cleaner mixes with the oil and helps to loosen dirt, varnish deposits and ‘black sludge’ from engine parts, so they are drained away with the old oil. It helps to neutralise acid residues in the oil and is suitable for both petrol and diesel engines. Oil System Flush typically works within 5 to 15 minutes.

Oil System Flush is a good choice during a regular oil change. You can consider it a preventive measure for light to moderate contamination. Afterwards, you change the oil and filter so the system runs again with clean oil.

Step-by-step guide for using Oil System Flush

Always follow the instructions on the packaging and do not exceed the recommended running time.

1. Let the engine run until warm.
2. Switch off the engine.
3. Add Oil System Flush to the oil.
4. Let the engine idle.
5. Switch off the engine.
6. Drain the warm, old oil.
7. Replace the oil filter.
8. Fill the engine with fresh oil.

Flushing the engine with Flushing Oil when internally contaminated

If there is internal contamination, it is advisable to go a step further. Then we recommend Flushing Oil. The favourable choice of viscosity, high-quality base oils and special detergent and dispersant additives make Flushing Oil extremely effective.

Flushing Oil contains additives to prevent wear, corrosion, and foaming. It is also suitable for use when the old engine Oil contains a lot of condensation or white sludge. The recommended operating time is typically around 20 to 30 minutes for both diesel and petrol engines.

Flushing Oil is a good choice when there is significant internal contamination. It cleans more intensively than a cleaning agent added to the old oil. You can also use it before switching to a different or higher quality oil.

Step-by-step guide for using Flushing Oil

Beforehand, check that the engine has sufficient oil pressure and only run the engine at idle during flushing.

1. Let the engine run until warm.
2. Switch off the engine.
3. Drain the warm, old oil.
4. Pour Flushing Oil into the empty engine.
5. Let the engine idle.
6. Switch off the engine.
7. Drain the warm flushing oil.
8. Replace the oil filter.
9. Top up the engine with new engine oil.

Heavy contamination? Choose Flushing Oil Pro and Neutralizer Oil Pro

For a professional cleaning of heavily soiled engines, it is advisable to opt for a thorough approach with Flushing Oil Pro and Neutralizer Oil Pro. Thanks to Flushing Oil Pro, you can tackle deposits, ‘black sludge’, and more like never before.

For a thorough cleaning of heavily soiled engines, you can opt for Flushing Oil Pro in combination with Neutralizer Oil Pro. Flushing Oil Pro has been developed to loosen heavy deposits and ‘black sludge’ in engines with severe internal contamination.

Because Flushing Oil Pro is even stronger than regular Flushing Oil, it’s important to also rinse with Neutralizer Oil Pro after using Flushing Oil Pro. This product has been specially developed to completely remove any residue from the flushing agent and clean the engine.

This combination of products is recommended when there is heavy contamination and no oil change has taken place for a long time. Changing the oil in combination with the flushing process often prevents costly repairs.

Step-by-step guide for using Flushing Oil Pro and Neutralizer Oil Pro

1. Let the engine run until warm.
2. Switch off the engine.
3. Drain the warm oil.
4. Pour Flushing Oil Pro into the empty engine.
5. Let the engine idle.
6. Switch off the engine.
7. Drain the warm flushing oil.
8. Replace the oil filter.
9. Pour Neutralizer Oil Pro into the empty engine.
10. Let the engine idle.
11. Switch off the engine.
12. Tap again.
13. Replace the oil filter again.
14. Top up the engine with new engine oil.

What are the costs of flushing an engine?

Do you choose a cleaning agent like Oil System Flush? This works out at about €17 for a 310ml bottle. One bottle typically allows you to treat 4 to 6 litres of oil. You can add the costs of new oil and a new oil filter to this.

Taking it a step further with Flushing Oil? Then a 1-litre bottle costs around 14 euros. For a professional clean, opt for Flushing Oil Pro and Neutralizer Oil Pro. Flushing Oil Pro costs around 80 euros and Neutralizer Oil Pro around 68 euros.

Flushing almost always offers significant benefits and better performance when it comes to oil consumption. If you have it done by a professional mechanic, you will naturally also have to factor in labour costs.

Clearing out ‘black sludge’? Order everything from AB Marine Service

In the case of a dirty engine, flushing is necessary. It ensures a clean engine with better lubrication, prevents increased wear, and extends the engine’s lifespan. It is particularly necessary for engines that idle or do not reach operating temperature, to remove deposits.

Do you also want to keep your engine in optimal condition? With us, you can order everything you need to get this job done. If you have any questions, please feel free to contact us. We’re happy to help.

Getting your boat ready for winter is always important, whether you’re keeping it in the water or storing it ashore. With AB Marine Service’s winter Check, you can be sure your boat is fully prepared for winter and you’ll be back out on the water enjoying it again sooner when the boating season starts. You get your boat ready when you’re no longer going to use it this season. Exactly when this is will, of course, vary from person to person. Most boat owners get their boats winter-ready in October. Getting your boat ready for winter consists of 6 steps. In this article, you’ll find the 6 steps to get your boat winter-ready, the necessary products, and all the information in pdf format so you can easily save it.

1. The engine
2. Technical parts
3. Water supply
4. The hull and the deck
5. Sailing boat
6. Equipment
7. Required products
8. Download the manual

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1. The engine

At the end of the boating season, it’s crucial to winterise your boat’s engine. Don’t skip this step, as your engine could otherwise suffer significant damage. To begin, it’s important to know whether your boat has an open or closed cooling system. A closed cooling system is filled with coolant. Not much can go wrong with this system. Do you have an open cooling system? In this case, water from the waterway is used to cool the engine. Absolutely no water must remain in the engine over winter. Follow the next steps to get your engine winter-ready.

SUPPLIES:

• Antifreeze

DURATION:
Average 15 minutes

STEP 1:
Close the water inlet valve. Do you not have a draining valve? If not, make sure to blow the water out of the valve before closing it. A valve with water in the ball will otherwise still break.

STEP 2:
Unscrew the weed filter.

STEP 3:
Ensure there is absolutely no water left in the engine. Look in the manual for the drain points. These points are often found on the side of the engine and underneath the manifolds.

STEP 4:
Is all the water out of the system? If so, you can proceed to the next step. You can optionally blow out the system with compressed air first before continuing.

STEP 5:
Run the engine while you slowly pour antifreeze into the weed filter, or place the supply hose into the jerrycan with antifreeze and then start the engine. Switch off the engine when antifreeze starts flowing from the exhaust of the cooling water system and catch the liquid in a bucket. Do not let it enter the waterway, as antifreeze is very harmful to the environment. Alternatively, use our biodegradable antifreeze.

STEP 6:
For boats that remain in the water over winter, the valve must also be filled with antifreeze. You can do this by filling the weed filter with antifreeze and opening and closing the inlet valve once, so that antifreeze seeps into the ball valve. Or even better, blow air into it and seal the valve under pressure so that only air is present.
And note, for boats that are ashore, keep the valve open to drain all water from the ball valve!

STEP 7:
Change the engine oil and replace the oil filter and the fuel filter. Diesel and fuel attract water. After the sailing season, it is advisable to replace these with new oil and filters to drain moisture in advance. New oil also protects the engine better due to the various additives.

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2. Technical parts

After winterising the engine, it’s time for the technical aspects. During this step, we’ll cover the gas and electrical supplies, and the technical components.

SUPPLIES:

• Grease for lubricating parts
• Cleaning supplies and bucket
• Anti-corrosion spray (multi-purpose spray)

DURATION:
Average 1-3 hours

STEP 1:
Disconnect the gas bottles and store them somewhere off the boat, for example at home. It’s best to store the bottles in a dry, well-ventilated place. Check the gas hoses and connections and replace them in good time. Any sign of wear means the parts need replacing to prevent accidents. Have gas hoses replaced by an authorised specialist (at least every three years).

STEP 2:
When batteries discharge, the acid is drawn into the plates. In winter, this can freeze. It is advisable to keep batteries fully charged. For example, you could opt to charge batteries occasionally with a trickle charger. You can also remove the batteries from board and store them in a dry place. It is still advisable to fully charge the batteries completely from time to time. Also check if the batteries need topping up with distilled water.

STEP 3:
Remove electrical equipment from board, as far as possible. Store the equipment in a dry and warm place. spray the exposed points and contact points on board with a moisture-repellent spray to prevent corrosion.

STEP 4:
Rotating parts such as the steering column, winches and gears must be checked. In addition, ensure that parts such as gears, the rudder tube and the propeller shaft are lubricated. During lubrication, force the water out so that it cannot freeze in the tube.

STEP 5:
Remove water from the bilge and clean the bilge thoroughly. Also, clean and dry the gas locker thoroughly.

STEP 6:
Check the level and condition of the coolant using our Glycol meter. Remove the impeller during the winter period so that it does not deform in the same position. Store the impeller in a dark place (the rubber is not UV resistant). Tension or replace the V-belt. Replace the coolant approximately every three years or if it is dirty and the frost resistance is too low (-25 degrees is the limit).

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3. Water supply

Now that the technical parts are ready for winter, we’ll move on to the water supply. Think about the toilet and the tap. Be aware that you must use a non-toxic antifreeze! The antifreeze used for cars is often toxic and therefore cannot be used now. Non-toxic antifreeze is better for the environment, but also for the pump’s rubber seals. Regular coolant will damage these. Please note: it’s not enough to pump your toilet dry, as residual water can remain in bends and corners.

SUPPLIES:

• Non-toxic antifreeze
• Cleaning supplies
• Sponge
• Optional: lubricant for the valves e.g. petroleum jelly or multi-spray

DURATION:
Average 30 minutes to 2 hours

STEP 1:
Close the skin fitting and disconnect the hose from the toilet’s water inlet. Hang the hose in the jerrycan with antifreeze. Pump the antifreeze through the toilet and close.

STEP 2:
Empty the fresh water tank completely. The last bit of water in the tank can be removed via the inspection hatch with a sponge, or hire a wet vacuum cleaner connected to the drain point, then turn on the taps one by one. Clean the tank. No water should remain in the hoses and water pumps. Don’t forget the outside shower and tap.

STEP 3:
Drain the water heater. Do you have an electric water heater? If so, disconnect the power first. To ensure all water is out of the system, disconnect the top hose from the water heater (hot water) and blow compressed air through the system. By opening each tap one by one, you will blow out all remaining water. Be careful not to build up too much pressure in the system; always keep a tap open.

STEP 4:
Fill all remaining valves with antifreeze. To do this, pour antifreeze into the supply point or hose and open the valve once so that antifreeze remains in the ball.

STEP 5:
Is your boat ashore? If so, drain the water from the valves and then close them. Cold and moisture can enter through open valves. It is advisable to lubricate the valves to prevent corrosion.

We’re halfway there!
Time to get the outside of your vessel shipshape for winter.

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4. The hull and the deck

The inside of your ship is all ready for winter. Time to make the outside of your boat ready for winter.

SUPPLIES:

• Cleaning supplies
• Wax (optional)
• Paint (optional)
• Grease for rubber
• Antifouling (optional)
• Boat cover

DURATION:
Average 1-3 hours

STEP 1:
Thoroughly clean the hull and the deck. If dirt remains on your boat during winter, it can become even more embedded. Also clean components such as fenders.

STEP 2:
Is your boat made of polyester? If so, apply a coat of wax. Polish the wax off in the spring.

STEP 3:
Does your boat have any bare patches? Treat any areas on the boat where the paint has worn away to protect them.

STEP 4:
To prevent rubber from cracking, lubricate all window and hatch rubbers with petroleum jelly spray.

STEP 5:
Leave internal hatches and lockers open for ventilation to prevent mould.

STEP 6:
Examine the underside of your boat. Can it last another year or does it need attention? If the underside of the boat requires treatment, you can apply antifouling paint.

STEP 7:
Protect your boat with a cover if you have one. A cover helps prevent frost damage.

STEP 8:
Secure everything properly! It can get quite windy in winter, and ropes and covers can flap about, quickly causing wear and tear or damage.

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5. Sailboat

Are you preparing your sailboat for winter? Then there are some extra parts to consider.

SUPPLIES:

• Cleaning supplies
• Lubricant for roller systems

DURATION:
Average 30 minutes to 1.5 hours

STEP 1:
Remove the sails and running rigging (ropes and wire) and store them in a dry place.

STEP 2:
Grease the furling systems for the jib or mainsail.

STEP 3:
Inspect the standing rigging. Is everything still intact? Are there any burrs or kinks? Are all split pins present and in good condition?

STEP 4:
Clean all blocks and sheaves.

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6. Equipment

In the final step of the checklist, you clean the equipment and prevent further damage from cold and damp.

SUPPLIES:

• Cleaning supplies
• Lubricant for roller systems

DURATION:

Between 30 minutes and 3 hours

STEP 1:
Remove all cushions, clean the cushion covers (if possible in the washing machine) and store them in a dry place.

STEP 2:
Thoroughly clean the boat. Remove all food and perishable items from board. Bottles or cans of drinks can also

STEP 3:
Remove other items that are not resistant to moisture and/or cold.

STEP 4:
Remove clothing and life jackets from the vessel. Check that the life jackets are still in good condition and replace if necessary.

STEP 5:
Check the fire extinguishers and have them inspected if necessary.

STEP 6:
Place moisture absorbers in all areas of the boat to prevent dampness.

7. Recommended products for preparing your boat for winter

8. Download the manual

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You have completed all the steps to prepare your boat for winter. Please remember that the steps you follow will vary depending on your boat. Does your boat have any parts where water can remain, or where moisture and cold could cause damage? If so, ensure these parts are also prepared for winter.

Tip: It’s also worth popping down to your boat during the winter. For instance, check that the cover is still secure. It would be a shame to have gone to a lot of trouble preparing your boat for winter, only for it to suffer damage nonetheless.

We wish you the best of luck with preparing your boat for winter!

Whether you’re an experienced boater or just starting out with tinkering on your own boat, it’s good to know what an anode is. We’ll explain the meaning of an anode, what an anode does, what types of anodes there are, and how they protect your boat from galvanic corrosion.

What is an anode?

An anode is an electrode that functions as a positive electrode, thereby forming the positive pole within an electrochemical cell. It is the electrode along which electrons move when an electric current is generated.

During this process, electrons are central. The anode releases electrons via an external circuit, creating a controlled current flow between the different components. The anode is a charged plate, often positively charged, which releases an equivalent number of electrons and leaves an equivalent number of electrons behind in the material.

An anode is an essential part of your boat’s protection system against galvanic corrosion. This corrosion occurs when different metals come into contact with an electrolyte, such as distilled water, fresh, salt, or brackish water.

How does a boat anode work?

On a boat, the anode is deliberately the least noble metal. This electrode is used to protect other metal components. The anode forms the positive pole, while the cathode, also called the cathode, is the negative pole.

The cathode is the electrode that actually accepts electrons, while the anode gives them up. This interaction causes current to flow from the anode to the cathode, thereby preventing corrosion damage. This principle is very similar to what happens during electrolysis, but applied as a protective mechanism.

Through this action, current flows from the anode towards the cathode, creating a controlled current. This electric current ensures that it is the anode itself that corrodes, not the important metal parts. This protects components such as the propeller, the propeller shaft, and other metal components.

Types of anodes: magnesium, zinc or aluminium

There are various types of anodes available, each designed for specific water conditions and materials. The most commonly used are zinc, aluminium, and magnesium. These materials gradually dissolve in the surrounding solution or mixture in which the metal is located.

Magnesium anodes: perfect for fresh water

A magnesium anode is most suitable for use in fresh water. Magnesium is the least noble metal of the three and therefore corrodes the quickest. This makes magnesium anodes ideal for use in fresh water, where corrosion is less aggressive. However, it is important to note that magnesium anodes are not suitable for use in salt water, as they would corrode too quickly there.

Zinc anodes: ideal for saltwaterr

A zinc anode is best suited for use in saltwater. Zinc is the least noble metal and is highly resistant to the corrosive effects of saltwater. For boats that primarily navigate the sea or other saltwater environments, zinc anodes are the best choice. They offer effective protection for metal components such as the propeller shaft and the stern gear of vessels.

Aluminium anodes: versatile and lightweightt

Aluminium anodes are very versatile and can be used in both saltwater, freshwater, and brackish water. An aluminium anode is lighter than zinc and offers excellent protection against corrosion. Furthermore, aluminium anodes are more environmentally friendly as they contain fewer harmful substances. These are often fitted to boats that navigate in various waters, as they are effective in both freshwater sailing and saltwater.

Can stainless steel and aluminium be used together on a boat?

A common question is whether stainless steel and aluminium can be used together on a boat. Combining different metals, such as stainless steel and aluminium, can lead to galvanic corrosion, especially in saltwater.

It’s important to choose the right anode to prevent this. For example, an aluminium anode can help minimise corrosion by sacrificing itself instead of the aluminium or stainless steel on your boat. The anode absorbs the electrical current and prevents damage to other metal components.

How often do you need to replace an anode?

Over time, an anode will visibly corrode. Regularly checking and replacing anodes is essential for maintaining your boat. A general rule of thumb is to inspect your anodes at least once a year. If you see an anode has lost more than 50% of its mass, you should replace it.

This applies to all types, whether you’re using zinc, aluminium, or magnesium. Failing to replace the correct anode in good time can lead to serious damage to the metal parts of your vessel.

How many anodes do you need for your boat?

The number of anodes you’ll need depends on the size of your boat, the type of water you sail in, the amount of metal components that come into contact with the water, and how a component is fed. For smaller boats, one shaft anode might suffice, whereas larger vessels often require several anodes.

The answer to the question ‘how many anodes do I need?’ depends on factors such as the waterline, the presence of an outboard engine, and the materials used. Also consider what type of anode you need, depending on the water conditions and the materials of your boat.

Purchase the correct anodes from AB Marine Service

The use of the correct anodes is essential to protect your boat from galvanic corrosion. Whether you’re sailing in fresh, brackish, or saltwater, choosing the right anodes and replacing them in good time will ensure your boat remains well-protected. Make sure you are properly equipped with the correct anodes and thus prevent unnecessary damage to your vessel.

Brass is a versatile and popular material in the maritime sector and other industries. It is an alloy of copper and zinc. This unique combination offers numerous advantages such as good electrical conductivity, resistance to corrosion, and an attractive sheen. Over the years, brass has become a favourite for various applications, from decorative items and musical instruments to marine parts, plumbing fittings, and electronic components. However, brass also presents its challenges, especially in damp and salty environments.

Brass corrosion can have serious consequences for the safety and functionality of crucial components, such as skin fittings and seacocks. This blog tells you all about the properties of brass, the causes of corrosion, and how CR brass offers the definitive solution for durable and safe application in damp environments.

How does corrosion occur in brass?

Most metals are subject to corrosion, but in the case of brass, the process of dezincification plays a particularly significant role. Additionally, galvanic corrosion can occur, especially when brass is combined with other metals in a damp environment.

Dezincification: the hidden threat

Dezincification occurs when the zinc content in brass is affected by a chemical reaction with water and oxygen. This process leaves behind a weak, porous material primarily composed of copper. Brass fittings, such as pipes, valves, and skin fittings that are constantly in contact with seawater, are susceptible to this form of corrosion.

• Key factor: The percentage of zinc in the alloy determines how quickly dezincification occurs. The higher the zinc content, the greater the risk.
• Damp environments: In saltwater, dezincification is accelerated, leading to structural weakness in parts that play a crucial role in the safety of your boat. This corrosive effect can be particularly severe below the waterline.

Galvanic corrosion: interaction between metals

Galvanic corrosion occurs when brass comes into contact with dissimilar metals, such as iron, nickel, or aluminium. In combination with seawater, which acts as an electrolyte, an electric current is generated that attacks the less noble metal in the combination.

How to recognise corrosion on your boat parts?

Spotting corrosion early is crucial to prevent damage and dangerous situations. Regular inspection and maintenance can significantly extend the lifespan of your boat parts.

Visual signs

• Discolouration: Brass can develop a green or white deposit due to oxidation. These are early signs of corrosion.
• Pitting: Small indentations on the surface indicate advanced galvanic corrosion and should be taken seriously.
• Loss of shine: Brass that loses its shine has often been exposed to damaging elements, such as salt and moisture.

Functional issues

• Reduced strength: Dezincification makes brass brittle, meaning it can no longer withstand loads.
• Leaks: Check through-hulls and shut-off valves for leaks, as these are often the first signs of corrosion.

By combining visual inspection and functional tests, you can identify problems early and limit damage. If you are using brass, these tests are very important.

CR-brass versus standard brass: what are the differences?

In marine applications, not all brass is created equal. The distinction between standard brass and CR brass (dezincification resistant brass) is of great importance, especially in sub-aquatic applications.

Standard brass

• Composition: Contains a high zinc content, making it more susceptible to dezincification.
• Applications: Standard brass is suitable for applications in less aggressive environments, such as freshwater areas or above the waterline. It is ideal for decorative applications, light loads, or parts that do not have constant exposure to moisture. Additionally, it is a cost-effective choice for situations where maximum durability is not required, such as temporary solutions or less critical components.
• Low hardness: Due to its relatively soft structure, standard brass is less suitable for load bearing.

CR-brass

• Dezincification-free: Due to the use of other alloying elements, such as manganese and a lower zinc component, CR brass is more resistant to corrosion.
• Higher strength: Ideal for applications where durability and safety are crucial, such as through-hulls and brass plates below the waterline.

Choosing the right type of brass is an important factor in ensuring the safety and performance of your boat.

CR-brass: the solution for below-waterline corrosion

For underwater applications, CR-brass is the best choice. This type of brass is designed to perform in the most challenging conditions, where standard brass would quickly fail.

Advantages of CR brass

1. Corrosion resistance: Due to its unique composition, CR brass remains strong and durable, even in saltwater.
2. Long service life: Thanks to its improved dezincification resistance, CR brass components have a significantly longer service life.
3. Reliability: Ideal for critical components such as through-hulls, brass profiles, and valves.

By choosing CR brass, you’re investing in quality and safety. You’ll benefit from this product’s most notable properties: it’s dezincification-free, corrosion-resistant, and therefore reliable.

When to choose standard brass or CR brass?

Choosing between standard brass and CR brass depends on the specific application and the environmental factors the material will be exposed to.

Standard brass

• Dry or freshwater environments: Standard brass is suitable for above-waterline applications or in freshwater areas, where corrosion and dezincification are less likely to occur.
• Cost considerations: For less critical applications, standard brass is a cost-effective option.
• Light load: In situations where mechanical strength and durability are not crucial.

CR-brass

• Damp environments: For applications below the waterline or in other damp conditions, CR-brass offers better protection.
• Mechanical load: Use CR brass in parts where strength and durability are important, such as through-hulls and valves.
• Safety and reliability: For critical components where failure could have serious consequences, such as marine parts.

The importance of proper brass maintenance

Proper maintenance is important to extend the lifespan of brass parts. Here are some practical tips:

1. Regular inspection: Check components such as hull fittings and valves for signs of corrosion.
2. Polishing: Regular polishing, for example with a soft cloth, removes oxidation layers and preserves the aesthetic appeal of the material.
3. Protective coatings: Use coatings to limit exposure to moisture and salt.
4. Preventive replacement: Replace standard brass parts promptly with CR-brass if they are exposed to damp or salty environments.

With proper maintenance, brass remains a reliable and attractive material in a wide range of applications. This ensures you continue to benefit from its unique properties in various uses.

Buying brass from AB Marine Service

At AB Marine Service, we offer a comprehensive range of brass products, from brass rods and tubes to skin fittings and seacocks, available in both standard brass and CR-brass fittings. Our products are designed to withstand harsh conditions and provide a long service life.

With this extensive knowledge of brass and corrosion, you are now better equipped to make the right choices and protect your boat against the challenges of saltwater. Trust in quality, choose the right materials, and maintain your boat with the expertise of AB Marine Service. contact us to learn more about how we can assist you with your marine maintenance projects.