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Propshield Retail Propshield Stern Gear Antifouling Grease is a propeller and stern gear antifouling for the retail market. Primarily aimed at private yacht and motor boat owners Propshield Retail sells extremely well via physical and online chandlers/marine stores. Propshield Retail is environmentally friendly, simple to apply and easily outperforms other propeller antifoulings on the market.

Propshield Retail is a unique formulation of lanolin derivatives and non-toxic chemicals designed to prevent & limit barnacle encrustation, oxidisation and electrolysis on all types of stern gear. Propshield is suitable for propellers, prop shafts, rudders, P & A brackets, trim tabs, outdrives and outboards; and compatible with bronze, stainless steel, aluminium, Zytel (Kiwi props) and painted surfaces.

• Use on all types of stern gear
• Protects for up to 12 months (average 6 - 8 months)
• Eradicates / reduces barnacle attraction
• Stops / reduces the effects of electrolysis and oxidisation
• Saves fuel due to cleaner stern gear
• Maintains speed of vessel
• Reduces prop repair and cleaning bills
• Propellers last years longer
• Stops corrosion & barnacles on painted outdrive legs
• Economical to use
• Launch immediately after application
• No wastage
• Will not dissolve in water
• Penetrates metal up to a tenth of a millimetre
• Easy to apply
• Stops oxidation of all metals
• Compatible with all metal surfaces
  
• Increase commercial profits
  
• Lanolin based product
  
• Environmentally friendly
  
• Made from renewable resources

Operation Coverage Guidelines: 375g Tub - Treats a 12 metre twin screw vessel for 6-8 months coating both propellers, both shafts and both rudders OR Treats two outdrive legs below the water line on a 10 metre vessel for 6-8 months (Can protect up to 12 months). 175g Mini-Tub - Treats a 12 metre single screw vessel for 6-8 months coating one propeller, one shaft and one rudder OR Treats one outdrive leg below the water line on a 10 metre vessel for 6-8 months (Can protect up to 12 months). Smaller vessels - Will have enough Propshield for 3 or more seasons.

What is Propshield?

Propshield Antifouling Grease is fast becoming known throughout the maritime world as the market leader in stern gear and propeller antifouling. Our product is undoubtedly the best value propeller antifouling on the market to date, and is the only widely available product which actively protects your stern gear in the most foul of waters guaranteed! Get on board with the Propshield experience and you wont want to get back off!

What makes Propshield so special?

Propshield uses lanolin derivatives combined with a special combination of corrosion inhibitors and other non toxic chemicals which together provide protection from corrosion and prevent hard growth on all types of stern gear.

Since boats have had propellers, mariners have been trying to find ways of stopping barnacles sticking to them without very much success. We have manufactured this new affordable product that significantly reduces/stops the adhesion of these creatures and significantly reduces/stops the effects of electrolysis and oxidisation as well. The reason the barnacles can’t grow on your propellers is that Propshield is so slippery that they are unable to attach to the metal (or painted) surface; when the vessel moves through the water any barnacles that have managed to adhere themselves are swept away. The product cannot be dissolved in water and even when the surface film degenerates over time the metal retains it within its pores, and so remains active.

As mentioned this product also helps to eliminate or at least reduce the effects of electrolysis so it stops your propellers dissolving into the water when your shore power is connected. If your propellers are green at the end of the season this is a sure sign that the copper is leaching out of the bronze through galvanic action. This weakens the metal and blades can sometimes break off and penetrate the hull. At best the blade will loose efficiency and your fuel bills will increase as your vessel's top speed falls.

For further information on Propshield visit our Product, Benefits and Application pages.

Renewable resources
Propshield Antifouling Grease uses lanolin derivatives which are a renewable resource. Propshield is not based on oil like many other products are. Lanolin is a naturally occurring substance which is a by product of wool production. It is not harmful to the sheep before or during its production or to humans during its application.

Application

There are two methods to choose from when applying Propshield Antifouling Grease, Method A and Method B.

For both Methods application is preferable on a warm day above 15°C if possible, if the temperature is lower than this warm Propshield up in a bucket/tub of hot water until malleable or store at room temperature (circa 20°C) prior to use.

• Method A: Suitable for all metal surfaces including bronze, stainless steel and aluminium and is applied using heat as a penetration catalyst (requires a heatgun).

• Method B: Suitable for painted surfaces as well as all metal surfaces and is applied using white spirit (mineral spirits or turpentine) as a penetration catalyst.

Coverage and Reapplication Guide

One 375g pot of Propshield is sufficient to treat a 12 metre (40ft) boat twice (coating only the props and shafts) so effectively you only pay half the RRP per year. If you treat the props, shafts rudders and trim tabs then one pot will only be sufficient for a 12 metre (40ft) vessel once. Alternatively one pot will cover two outdrive legs below the water line on a 10 metre (33ft) boat.

Single screw craft and smaller vessels will have enough PROPSHIELD for two or more seasons.

If the vessel is in commission for 6-7 months one application is normally sufficient; this depends on local conditions and you may need to coat more frequently. If in commission for 12 months reapply more frequently, again depending on local conditions. We cannot give precise guidelines as each locality has different fouling problems. We would advise Propshield users to follow the initial guidelines and adapt these to suit locality.

Application - Method A

Suitable for all metal surfaces including bronze, stainless steel and aluminium and is applied using heat as a penetration catalyst (Further application photos can be seen here).

WARNINGS:
1) Do not use Method A on painted surfaces, i.e. outdrive legs and outboards however you can use either method on your outdrive/outboard propellers if the blades on are bare metal.
2) Do not overheat outdrive/outboard props as the rubber insert/seals in some designs of prop hub can be damaged. If unsure check with the manufacturer of your outdrive or outboard motor.

Please click here to be redirected to prop-shield-usa.com for a step by step example / guide detailing Propshield being applied to a bronze propeller.

Application - Method B

Suitable for painted surfaces as well as all metal surfaces and is applied using white spirit (mineral spirits or Turpentine) as a penetration catalyst (Further application photos can be seen here).

Please click here to be redirected to prop-shield-usa.com for a step by step example / guide detailing Propshield being applied to a bronze propeller.

Specification

• Use on all types of running gear • Eradicates / reduces barnacle attraction • Stops / reduces the effects of electrolysis • Saves fuel due to cleaner stern gear • Maintains speed of vessel • Reduces prop repair costs • Propellers last years longer • Stops corrosion & barnacles on painted outdrive legs • Economical to use • Launch immediately after application

• No wastage • Will not dissolve in water • Penetrates metal up to a tenth of a millimetre • Easy to apply • Stops oxidation of all metals • Compatible with all metal surfaces • Increase commercial profits • Lanolin based product • Environmentally friendly • Made from renewable resources

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Use on propellers, prop shafts, rudders P & A brackets, outdrives, outboards, inboards etc
Propshield is a very versatile product and can be used on virtually any type of stern gear and on any metal material (doesn't perform on plastics). It can also be used on painted surfaces so outdrive legs can be protected. Propshield is an all round stern gear antifouling work horse.

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Eradicates / reduces barnacle attraction
During our research we have been amazed at the effects of minimising the growth of barnacles. In many cases the barnacles are completely eradicated and even in the most foul of waters only a few barnacles are able to attach themselves to your stern gear. Propshield ensures hard growth cannot get a permanent grip on the surface, when the vessel is moving the force of the water dislodges any growth that has managed to adhere itself to the propeller etc.

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Stops / reduces the effects of electrolysis
Propshield forms a barrier between the stern gear and the water so insulates the metal or painted surface. If you have suffered from electrolysis (green deposits on bronze blades) then you will notice that this either completely disappears or is minimised in extreme cases.

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Saves fuel due to cleaner stern gear
You will save a significant amount of fuel if your props are clean. If you suffer from black smoke at full throttle then the chances are that you have barnacle build up on your props. Alternatively you may find that the props need slightly repitching to a finer pitch. Boat yards will always tell you that black smoke is always caused by faulty injectors or pumps on diesel boats. This is not always the case, check your props first.

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Maintains speed of vessel
Using Propshield maintains the speed of your vessel as the hydrodynamics of the propeller blades are maintained. Any fouling on your props means you will loose speed which is particularly important on planning boats.

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Reduces prop repair costs
How can Propshield reduce your repair costs? Well if they do not oxidise and don’t suffer from electrolysis then this should reduce the need for them to be re fettled quite so often. In the case of electrolysis it could mean the difference between replacing the prop or not. If you prop is green (bronze only) at the end of the season then the copper is leaching out of the bronze and weakening the blade.

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Propellers last years longer
As we have mentioned above the effects of the marine environment are very harsh and your props are finely engineered pieces of equipment which cost hundreds of pounds in most cases. If they are not maintained they will eventually fail in service. Propshield will significantly extend the life of your props by providing a barrier to that harsh environment.

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Stops corrosion on outdrive legs (can be applied over paint)
Corrosion on outdrive legs can be devastating and can ruin aluminium castings in a few months so an application of Propshield will prevent this damage.

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Economical to use
Our research shows that one pot of Propshield will cover the propshafts and propellers of a 12 metre boat for two applications. That is a primer coat and second coat, twice.

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No wastage
There is no wastage with this product. If you have some left over simply return it to the pot in a melted liquid form and use it again when you are ready. If has been diluted with white spirit simply let the carrier evaporate and re dilute it for use when you next need it.

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Vessels can be used immediately after application
After application you do not need to let the product harden as it will be solid enough as soon as the heat is removed from the metal.
Method two is slightly different in that the carrier needs to evaporate but this takes only a few minuets and it will take considerably longer than that to launch your boat. By the time it hits the water it will be hard. If for some reason you have over diluted the product then you should wait until the surface has dried to a sticky film. You may even need to apply more coats if it has been diluted too much.

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Will not dissolve in water
As this is a lanolin based product it will not dissolve in water. However it will gradually wear off but it takes a considerable amount of use before it becomes ineffective.

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Penetrates metal up to a tenth of a millimetre
Propshield penetrates the surface of the metal so forming an invisible barrier which remains active and deters barnacle attraction. This penetration also works with painted surfaces.

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Easy to apply
Propshield is easier to apply when the temperature is above 15 degrees centigrade, if below this temperature just drop the pot of Propshield into hot/boiling water until the grease is malleable. Above 15 degrees it gets even easier as the metal holds the heat more readily. Method B is better at low temperatures as the first coat is diluted with white spirit and therefore not temperature dependant. However the second coat is sensitive to the ambient temperature.

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Stops oxidation of all metals
Propshield will stop the oxidation of all metals by providing a durable barrier between the metal surface and the environment.

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Compatible with stainless steel, bronze, aluminium etc
As mentioned before you can use this product on any metal but do not use on synthetic materials such as plastics.

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Commercial vessels with fouled stern gear waste money; increase profits with Propshield
Propshield Industrial propeller antifouling can help commercial operators save 5% to 10% on fuel bills - please visit our sister website www.propshield-industrial.com for further details.

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Lanolin based product
Propshield’s base material is lanolin which has been used for years in the pacific and southern hemisphere for protecting boats stern gear. Now Giraffe UK brings you a modern version and application with all the benefits of new technology.

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Environmentally friendly
This is a green product that will not cause any harm to the environment. It will not hurt aquatic marine life forms (even barnacles, they just can’t stick to it). It is biodegradable over extended periods so will not pollute rivers or the sea. The additives in Propshield are as eco friendly as we were able to find and are used in other industries where pollution is forbidden. We are confident that this is safe to use both in the production process for the end user and the environment.

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Made from renewable resources (NOT OIL BASED)
The base product is produced from the grease which naturally occurs in sheep wool and is a by-product of the wool production process. The sheep are not harmed in any way and when it is hot this is a positive benefit to them.
The packaging we use is also recyclable and so are the drums that the raw materials are packed in when they are delivered to Giraffe UK. We have gone to extreme lengths to ensure that this product is as natural as possible whilst maintaining its effectiveness in the marine environment.

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Demonstration Photos

#1 Fig.1 - Results without using Propshield Fig.2 - Results after using Propshield These two propellers were used in the same very foul estuarial waters where barnacle encrustations are at their worst. The photos demonstrate how effective Propshield is during normal use, especially where boats lie idle most of the time. This is when barnacles attack and your very expensive propellers simply dissolve into the water through leakage in shore power systems, even some pontoon electrical systems leak into the surrounding waters.

Figure 1 - This propeller has had about seven months use and hasn’t been treated with Propshield and shows a typical level of encrustation attack and oxidised surface.

Figure 2 - This propeller was coated with Propshield and also had average use during a seven month season. The result was startling; virtually no barnacles in the working area of the prop and it looked virtually the same as at the beginning of the season. The treated blade had 24 barnacles and we estimate that the untreated blade had in the order of 500 barnacles!

#2 Duo Props without Propshield

#3 Duo Props with Propshield (after a season's use)

#4 Outdrive Legs - Application Photos: Transparent first coat, thicker second coat and ready to launch.

FAQ

(Frequently asked questions)

Question: How can I apply PROPSHIELD in the winter if the temperature is below 15°C ?
Answer: The only way to apply PROPSHIELD in low temperatures is to
1) Heat PROPSHIELD to a liquefied state
2) Heat the blades to a higher than normal temperature (Method A)
3) Build a tent around the stern of the boat and use heaters to warm the air inside
4) Alternatively use Method B.

Question: How do I know when my stern gear needs recoating?
Answer: There are no hard and fast rules but as a rule of thumb we suggest that when barnacles are starting to grow on the blade then its time to recoat. However if the boat has been idle for some time you can find that these will wash off anyway once underway, especially at high speed. A good timeframe to recoat is between 6 to 8 months which is the average lifespan of the retail product.

Question: Why can’t I get an even coat of PROPSHIELD?
Answer: It is not important for the coating to be even but if you do want it to be then just go over the surface with a heatgun to redistribute the product smoothly.

Question: How do I remove old PROPSHIELD from my propellers?
Answer: There are several way in which to do this. Use a rag soaked in white spirit to dissolve the product. You can use hot water and washing up liquid. Domestic steam cleaning equipment could be also be used.

Question: Is PROPSHIELD dangerous to use?
Answer: No this product is not in the least dangerous to use but we would advise that as with any product, prolonged contact with the skin should be avoided. Use good working practices when working with any products. Some people are allergic to Propshield.

Question: Why is PROPSHIELD such good value for money?
Answer: When you consider that our competitors have products for sale at two, three or even five times as much as our own you begin to realise how good a deal you're actually getting with Propshield Antifouling Grease. The fact that our product gives far better results, in our opinion, from independent tests and from customers (see our testimonials), means that our product is cheaper, more effective and saves you a lot more money on fuel and propeller repairs. Not to mention that a single unit may last you multiple seasons if you only coat your props.

Question: How far does PROPSHIELD go?
Answer: PROPSHIELD is designed to coat one 12 meter twin screw vessel twice (Two Propellers and two shafts. So if you have say a small fishing boat with one screw then one 375g pot of PROPSHIELD will last about 2 to 4 seasons depending on vessel usage.

Question: Is it true that PROPSHIELD doesn't have a shelf life?
Answer: Yes, Propshield will be useable and just as effective in ten, twenty or even a hundred years into the future and beyond.

Question: How long does PROPSHIELD take to apply?
Answer: There's no definitive answer to this question as it depends on what type of vessel you are applying Propshield to and how many sections of stern gear needs to be coated. For example it takes thirty minutes to three quarters of an hour to coat a 12 metre vessel's two propellers and two prop shafts however to coat an 8 metre single propeller vessel would take far less time. Note that the first couple of applications will take a little longer until you get familiar with the application process.

Question: Can PROPSHIELD stain my skin or clothes?
Answer: Propshield may stain certain materials, it may wash out but it is advisable to wear clothes that you don't mind getting a little dirty. Propshield shouldn't stain your skin and will wash off using soap and warm water - if you are worried about staining your hands use the gloves provided.

Question: Does PROPSHIELD really stop barnacles forming on my props?
Answer: Yes. Propshield significantly reduces the number of barnacles that usually form on propellers and other types of stern gear, in some instances it can stop barnacles altogether. As with all Antifouling systems Propshield will require a vessel to move through the water to ensure barnacles are forced from the Propshield coating, if a vessel is used infrequently then we recommend taking the vessel out at least every 2 months and run the vessel under power for an hour at full speed to dislodge any growth which has managed to adhere itself to the coating during inactivity - this method is also advised for Sailboats which are used frequently under sail only.

Question: Does PROPSHIELD prevent my propellers from becoming oxidised?
Answer: Yes, Propshield significantly reduces oxidization on propellers and other types of metal stern gear.

Question: Can PROPSHIELD stop electrolysis eating away my props?
Answer: Propshield reduces but cannot stop electrolysis and is not a substitute for a good bonding system. (Propshield will not prevent anodes dissolving/breaking down, unless you coat your anodes with Propshield but this would stop your anodes from working and this is not advisable under any circumstances).

Question: Is PROPSHIELD toxic?
Answer: Apart from causing minor skin irritation and adverse reactions when eaten Propshield "Retail" is not toxic. However it may contain some minor impurities due to some of the ingredients it contains.

Question: I got PROPSHIELD in my eye what should I do?
Answer: Rinse with plenty of water. Consult your doctor if any symptoms persist.

Question: My child has accidentally eaten some PROPSHIELD what should I do?
Answer: Do not induce vomiting. Drink plenty of water. Seek medical advice.

Propshield Industrial Propshield Industrial is a specially engineered propeller antifouling for the commercial sector. Propshield Industrial is fast becoming recognised throughout the maritime world as the market leader in commercial propeller antifouling. Propshield Industrial will ensure your company keeps its competitive edge saving thousands of pounds / dollars in fuel and reduced propeller repair, replacement and cleaning bills.

Building on the success of its retail sibling, see www.prop-shield.com for details, Propshield Industrial increases product strength, durability and ease of application ensuring it's well up to the task of protecting all types and sizes of vessel, from supertankers to superyachts and from cruise liners to trawlers, in the most testing of environments.

• Eradicates barnacles and hard growth
• Stops oxidisation and electrolysis
• Compatible with bronze, stainless steel & aluminium propellers
• Quick two coat application
• Protects for up to 18 months (average 8 - 12 months)
• Fuel savings will range from 5% to 10%!
  
• Save thousands on costly repair & cleaning bills
• 5 Sizes available from 2.75 Litre up to 60 Litre to cater for all sizes of vessel, from small craft up to Supertankers
  

Propshield Industrial is suitable for:

• Application Services
  
• Workboats / Tugs
  
• Trawlers
  
• Police / Government Vessels
  
• Coastguard
  
• Superyachts
  
• Ferries / Cruise Liners
  
• Fishing / Shipping fleets
  
• Supertankers  
  
• Military Vessels

Product Operation

How it works

Propshield Industrial has a lanolin base, a substance long used by mariners for prevention of fouling, however combine this with a special combination of corrosion inhibitors and other chemicals an age old remedy is transformed into a modern day solution tough enough to endure hard labour day in day out in the toughest of climes and in the foulest of waters.

Propshield Industrial bonds to the metal surface of a propeller in a simple 2 coat application process. Once applied it ensures a surface is so slippery that barnacles and hard growth are unable to securely attach to its metal surface, oxidisation and electrolysis are also nullified. Important: Propshield is no substitute for a good bonding system, the product will work in conjunction with anodes to eradicate electrolysis.

As with all antifouling products Propshield Industrial performs at its best when a vessel is used regularly; the more a vessel is used the more barnacles and hard growth are thrown off from the force created by the rotating propeller and the lack of adhesion caused by the Propshield coating. Propshield Industrial will also perform well even if a vessel is inactive for long periods of time. If a vessel has seen extended inactivity simply take to sea and run at full speed for approximately 60 minutes and most of the barnacles and hard growth that have adhered to the props will be thrown off.

Unable to be dissolved in water the Propshield coating slowly degenerates over time leaving a transparent bonded film retained in the very pores of the metal ensuring the product remains active for long periods of up to 18 months. Click here for details on product application.

A macro cross-section diagram of the product in action/application is shown in Figure 1.1 on the right. As you can see the 1st coat of Propshield bonds to the metal surface penetrating the pores of the metal up to a tenth of a millimetre. The 2nd bonding coat is then applied on top of the first in a much thicker layer. This second coat consists of two sub layers, primary and secondary.

2nd Bonding Coat
The primary and thickest layer plays a critical part in protecting the 1st bonding coat and secondary layer of the 2nd bonding coat ensuring the products overall longevity. This primary layer also has the shortest active lifespan of just 1 to 4 weeks, this may seem a short time however the primary layers job will have been achieved, protection of the secondary sub layer of the 2nd bonding coat and the 1st bonding coat.

After the Primary sub layer of the 2nd bonding coat has finished its active life it will fall away to reveal the much harder secondary sub layer of the 2nd bonding coat, this transition from primary to secondary sub layer is known as "shedding". Shedding can occur gradually over a few weeks or all at once depending on various factors such as vessel usage, local sea variables and ambient temperature during application. Regardless of the time span the primary sub layer will only "shed" itself once the secondary sub layer is hard enough to begin its active role in protecting the propeller surface. It is also important to note that any barnacles, hard growth or weed growth that has attached itself to the propeller during the initial 1 to 4 weeks will be ejected from the propeller along with the primary sub layer during shedding.

Once the secondary sub layer becomes active it will have achieved its optimum solidity for protecting the 1st bonding coat and the metal of the propeller beneath. During the lifespan of the secondary layer, approximately 5 to 6 months, the surface will become totally transparent resembling the 1st bonding coat during application. It is prudent to point out at this stage that some observers will take this transparency to mean that the product has been washed away and the prop is no longer protected, this couldn't be further from the truth as in fact the product has only reached about a quarter of its active life.

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1st Bonding Coat
The 1st bonding coat becomes active 5 to 7 months after a vessel has been launched and has a lifespan of up to 12 months depending on local fouling conditions and vessel usage. This final layer of protection for the propeller is transparent from start to finish and will act as the final defence against barnacles, hard growth, oxidisation and electrolysis. Once the 1st bonding coat has degenerated and finally left the pores of the metal a vessel can be hauled out/dry docked for Propshield Industrial to be reapplied.

If a vessel is not able to be hauled out/dry docked once Propshield has run its active life it is prudent to point out that at this time propellers will be in excellent condition to continue active duty for a lengthy period due to the protection Propshield has provided for up to 18 months previously. For instance if a prop usually needed to be cleaned after 1 year of service then after Propshield had been used a prop would only need to be cleaned after 2 and half years of service.

Application

Propshield Industrial is applied in a quick and easy 2 coat bonding process. Unlike the retail grease version  Propshield Industrial comes in the form of an easily applied paste enabling large surface areas to be coated in minutes. The principal application process is as follows:

0. Surface Preparation

Propeller surface is prepared for application. Any growth is removed and propellers are checked to ensure they are in good working order. The propeller surface needs to be taken back to bare metal using the appropriate equipment. Once fully clean the propeller surface then needs to be "keyed" ready to receive the product (this is also necessary for new props). The surface can be keyed by using 80 grade wet and dry sandpaper/emery paper or for larger props power tools can be used, i.e. sander or angle grinder with sanding attachment.

Fig. 1.1

1. First Coat The first coat can now be applied. The product comes in the form of a thick paste which is initially brushed onto the propeller surface to form a thin coat, the coat is then rubbed well into the keyed metal by hand using a rag or for larger props using a powered rotary polishing mop. To save time rather than brushing on a first coat the product can be put straight onto a rag or a polisher power tool (i.e. Bosch Polisher GPO 12 E Professional, see figure 1.3 below) and rubbed directly onto the surface. Either method produces a semi-transparent coating of Propshield Industrial over the whole of the propeller surface. Using a polishing mop (see figure 1.4 below) will produce a redder first coat than using a rag (see figure 1.2).

Fig. 1.2

		Fig. 1.4 (in this instance a drill is used with a polishing attachment)
Fig. 1.3

2. Second Coat

The second coat can now be applied. Using a suitable sized brush, or a soft bristled broom for larger propellers, a second much thicker coating of Propshield is brushed on top of the first transparent coat, see figure 1.5 below. This second coat needs to be thick enough so the metal underneath is no longer visible, see figure 1.6 below. The coating doesn't need to be uniform in thickness however if appearance is important then a blowtorch/lamp or heatgun can be used to quickly skim over the surface to produce a pleasing even gloss finish to the coating (see figure 1.7 below).

Fig. 1.5	Fig. 1.6	Fig. 1.7

3. Bonding & Launch

The coatings are now left to bond to the metal surface and to each other for approximately 1 to 3 days depending on ambient temperature. The vessel can then be launched.

Specification

Propshield Industrial is a paste and comes in 5 available sizes, 2.75, 5.5, 10, 30 and 60 Litre Kegs/Barrels. Please see our coverage table for information on propeller sizes and the number that each keg/barrel can treat.

• Saves fuel due to cleaner stern gear
• Maintains speed of vessel
• Propellers last years longer
• Stops corrosion & barnacles on painted surfaces
• Will not dissolve in water
• Penetrates metal up to a tenth of a millimetre
• Stops oxidation of all metals
• Compatible with all metal surfaces
  
• Increase commercial profits
• Environmentally friendly once applied

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Eradicates barnacle attraction
During our research we have been amazed at the effects of minimising the growth of barnacles. In many cases the barnacles are completely eradicated and even in the most foul of waters only a few barnacles are able to stay attached to propellers.

Stops / significantly reduces the effects of electrolysis
Propshield forms a barrier between the propeller surface and the water so insulates the metal or painted surface. If you have suffered from electrolysis (green deposits on bronze blades) then you will notice that this either completely disappears or is at the very least minimised in extreme cases.

Saves fuel due to cleaner propellers
You will save a significant amount of fuel if your props are clean. Slow speeds, strained engines, damaged bearings, delayed shipments, missed arrival dates, etc are just a few of the results of barnacle and hard growth encrusted propellers. Propshield Industrial will save many businesses up to 10% in fuel costs. Considering the cost of fuel this represents fantastic savings compared to the relatively low cost of the product itself.

Maintains speed of vessel
Using Propshield maintains the optimum speed of your vessel as the hydrodynamics of the propeller blades are maintained. Any fouling on your props means you will lose speed or use more fuel maintaining the same speed.

Reduces prop repair costs
How can Propshield reduce your repair costs? Propshield Industrial ensures props do not oxidise and don’t suffer from electrolysis reducing the need for them to be re-fettled quite so often. In the case of electrolysis it could mean the difference between replacing the prop or not. If you prop is green (bronze only) at the end of the season then the copper is leaching out of the bronze and weakening the blade. Propshield Industrial eliminates or at least significantly reduces the effects of electrolysis so it stops your propellers dissolving into the water when shore power is connected. If your propellers are green at the end of the season this is a sure sign that the copper is leaching out of the bronze through galvanic action. This weakens the metal and blades can sometimes break off and penetrate the hull. At best the blade will loose efficiency and your fuel bills will increase as your vessel's top speed falls. (Please note Propshield Industrial is not a substitute for a good bonding system).

Propellers last years longer
As we have mentioned above the effects of the marine environment are very harsh and your props are finely engineered pieces of equipment which cost thousands of pounds/dollars. If they are not maintained they will eventually fail in service. Propshield will significantly extend the life of your props by providing a barrier to that harsh environment.

Stops corrosion on outdrive legs (can be applied over paint)
On smaller vessels Corrosion on outdrive legs can be devastating and can ruin aluminium castings in a few months so an application of Propshield Industrial will prevent this damage. This is particularly useful for businesses running application services for smaller leisure craft.

Will not dissolve in water, up to 18 month active lifespan
As this is a lanolin based product it will not dissolve in water. It will gradually degenerate but it takes a considerable amount of time before it becomes ineffective, in some instances up to 18 months.

Penetrates metal up to a tenth of a millimetre
Propshield penetrates the surface of the metal so forming an invisible barrier which remains active and deters barnacle attraction and hard growth.

Easy to apply
Propshield has been reformulated for the commercial sector and is quickly applied to large surface areas in minutes. Click here for further details.

Can be applied to all types of stern gear
This product is specifically aimed at propeller application however like the retail version Propshield Industrial is suitable for all types of stern gear from props to P and A brackets and from painted outdrive legs to rudders as well as shafts, trim tabs etc.

Compatible with stainless steel, bronze, aluminium etc
This product can be used on any metal surface, it can even be used on painted surfaces and even some composite surfaces (please contact us to find out what composite materials are compatible with Propshield Industrial).

Increase profits with Propshield; Commercial vessels with fouled propellers waste money.
Fishing vessels lay idle for long periods due to new fishing quotas so by applying Propshield to your props you prevent the build up of encrustations which saves fuel and increases your profits. Lifeboats, ships and other vessels which remain afloat would also benefit from Propshield for the same reason.

Renewable resources
Propshield Industrial Propeller Antifouling is lanolin based which is a renewable resource. Propshield is not based on oil or any other hydrocarbon like many other products are. Lanolin is a naturally occurring substance which is a by product of wool production. It is not harmful to the sheep before or during its production or to humans during its application. (See best practice notes in the instruction guidelines included with your purchase)

Propeller Coverage Table

Rigging Guard Rigging Guard Anti-Corrosion Wax is a rust and corrosion inhibitor for marine rigging and topside corrosion control. The product is manufactured from a special blend of formulated waxes, greases and oils and is salt/fresh water and weather resistant.

Rigging Guard is an extremely versatile product suitable for use on all metal rigging, anchors, chains, cable, wire rope, winches, standing rigging plus metal hawse pipes, window frames, guard wire fittings, wiper arms and spindles, decorative bronze and copper and other corrosion prone surfaces.

Rigging Guard brushes on in seconds in a thin transparent coat which protects metal surfaces for up to a year.

Rigging Guard can also stop rust dead in its tracks although it is advisable to replace or clean up rusty surfaces prior to application (especially if they are safety critical).

• Easy to apply
• Stops oxidisation and corrosion
• Compatible with all metal surfaces
  
• Increase commercial profits
  
• Formulated blend of waxes, oils and greases
• Helps prevent failure of safety critical systems

Product Operation & Information

Rigging Guard is an Anti Corrosion Wax comprising of a special blend of waxes, oils and greases which prevents rust, corrosion, oxidisation and verdigris (green deposits) on all types of metals including: all metal rigging, anchors, chains, cable, wire rope, winches, standing rigging plus metal hawse pipes, window frames, guard wire fittings, wiper arms and spindles, decorative bronze and copper etc.

Whilst Rigging Guard is aimed primarily at Yachts it’s an extremely versatile product and will also be beneficial to small ships, workboats, motor boats and small scale architectural rigging found on bridges, walkways and buildings (for larger comercial solutions to corrosion control please see ACW Coatings).

Insurance companies are now insisting on better maintenance of standing rigging so it makes sense to use a product such as this to help limit maintenance and replacement cost of expensive gear. Rigging Guard will ensure rust prone fittings, cables, anchor chains etc remain in pristine condition. It will also aid the free running of windlasses on the foredeck and will reduce the effort of hauling in the anchor. This is especially helpful if you have an electric winch as it will take less current to lift the anchor if it is free running thereby making your battery last longer and takes the strain off the motor.

Rigging Guard prevents corrosion on all types of metal including decorative copper and brass. Just a thin smear will banish oxidisation for up to a year. The best thing is it simply wipes off with white spirit so no more trying to remove varnish from your brass clock. A quick re polish and an application of Rigging Guard will see your bright work protected.

Clearly Rigging Guard will help prevent dismasting as a lot of these situations are caused by lack of maintenance. It is not a substitute for regular inspections and replacement where necessary but it will cut the amount of down time and the costs of replacement parts will be significantly reduced.

Application

Rigging Guard can be applied to anywhere corrosion is present above the water line and is compatible with all metals surfaces. Only a thin transparent coating which can be brushed on in seconds is required for long lasting protection up to a year and it is weather, salt and fresh water resistant.

Rigging Guard can be used at any time of the year and is also very beneficial if you are going to lay up a vessel for a while as it is effectively a mothballing compound if applied more thickly. Normally you would simply brush the product onto wires and fittings to protect them and that’s it job done. Rigging Guard can even treat inside the captive ends of cable, wires and fittings, the product can be diluted and drip fed into the sealed component.

Application Process:
Apply 1 to 2 times a year or recoat as desired. Required tool: 13mm (1/2”) brush (not supplied).

Step 1. Surface Preparation:  remove surface corrosion, dirt, water etc; ensure fittings are re-useable and replace damaged cables, fittings etc.

Step 2. Application: Brush on a thin almost invisible coating with a brush. Further coats can be applied for prolonged protection or winterisation. Work into crevices. Through hull fittings, bolts & other corrosion prone surfaces inside/outside of the vessel - apply liberally or as desired. Surfaces in contact with sails/sheets – rub brushed coat well in with rag and reapply more frequently.

Step 3 (optional). Internal Application of captive ends of cables/wires – Non horizontal fittings: Remove enough Rigging Guard for components to be treated & place in another container. Dilute with 60% white spirit. Form a cup of Plasticine around top of fitting and pour in a small quantity of fluid allowing 24 hours to soak into the captive cable or wire. Horizontal fittings – loosen fitting and wire or cable and reposition vertically and follow non-horizontal guidelines above.

Specification

Two retail sizes are available 0.25 and 0.5 Litres. Rigging Guard is suitable for Yachts, Motor Cruisers and Sailboats and small scale architectural rigging. (Please note the 0.25L will be available in 2009 TBA).

Coverage Guide:
0.5 Litre - coats 330 fittings plus 110m (360ft) of standing rigging/cable.

0.25 Litre - coats 165 fittings plus 55m (180ft) of standing rigging/cable.

(Each size will last 2 to 6 seasons depending on size of vessel etc, figures are approximate)  

• Brushes on in seconds
• Compatible with all metal surfaces
• Special blend of formulated waxes and greases
• Prevents Rust, Corrosion, Verdigris (green deposits) & Oxidisation
  
• Suitable for metal rigging, anchors, chains, cable, wire rope, winches, standing rigging + metal hawse pipes, window frames, through hull fittings, wiper arms and spindles, decorative bronze and copper plus other corrosion prone surfaces inside and outside of a vessel
  
• Helps prevent dismasting
  
• Suitable for small ships, workboats, yachts, motor boats & small scale Architectural rigging
  
• Single transparent coating protects up to 1 year
  
• Save money as metal rigging lasts years longer
  
• Use on anchor chain and windlasses to aid free running
  
• Weather, salt & fresh water resistant
  

Demonstration Photos

Figures 1 & 2 below represent rust & corrosion at their worst. Aesthetics are ruined & the integrity of an object, which in most cases are relied upon for one’s very life, can be damaged beyond repair. Preventing corrosion on metals can help prevent failure of critical systems such as anchors, winches, standing rigging & fittings etc. Rigging Guard will help prevent dismasting & will provide sailors with greater confidence in their equipment.

Transform rusty and corrosion prone rigging from this:

Fig 1	Fig 2

To this:

Fig 3

Figure 3 above shows the protective power of Rigging Guard, a piece of mild steel which corrodes far quicker than other metals was submersed in salt water for a few months. The area coated with Rigging Guard on the left was completely rust free whilst the untreated part on the right was covered in rust. This simple test in extreme conditions far beyond suggested usage demonstrates how powerful Rigging Guard is in preventing corrosion.

Rigging Maintenance Guide

• Did you know standing rigging should be replaced every seven to ten years?
• You can extend the life of your rigging significantly if it’s properly maintained and inspected on a regular basis.
• Only RIGGING GUARD is designed to help combat the harsh and hostile marine atmosphere.

As you will see from the Independent Links, maintenance of your standing rigging is essential to prevent dismasting. Your life depends on having a rig that is durable and above all reliable in all weathers not just on sunny days. Whilst your rigging may look superficially OK rust is eating away at the inside of your fittings. Even slight rust marks are a tell tale that all is not well and you should investigate problems as soon as they emerge. We are not trying to be scare mongers but are merely trying to educate the sailing world to the potential risks of not maintaining the standing rig. Rigging is not fit and forget but needs constant attention to keep it fit for purpose. Your life may depend upon it.

I can hear you say but stainless steel doesn’t rust! Well look at the website photos from the Independent Links and you will see that it does. Unlike mild steel, stainless steel will rust in the absence of oxygen and especially when it is in a corrosive atmosphere such as a warm salty environment. Even in the UK we suffer from such conditions so it pays to keep an eye on your rigging. The only way to prevent this happening is to impregnate the fittings and seal the ends with Rigging Guard. No other proprietary product exists specifically designed for this purpose.

In tropical countries the problem is even worse where standing rigging can last just three years before it needs replacement. Typically in this environment fittings can fail very quickly rotting from the inside until the fitting bursts and the wire rope fails to support the mast. Additional pressure is put onto other failing fittings and they also fail bringing down the mast. This can result in serious injury, loss of life and loss of the vessel.

Insurance companies are now starting to recognise these potential problems and are starting to insist on regular inspections and maintenance. Can you convince them that you have a regular maintenance schedule? Ask yourself these questions?

When was the rig last inspected?
Are there any signs of rust on the wire rope?
Are there any signs of rust on the fittings?
Are there any broken strands of wire in the rope?
Are the wires tensioned properly? (Strain gauges are available form other manufactures)
Are chain plates inspected or are they out of sight out of mind?

If the answer to any one of these is yes then you need to inspect, overhaul or replace the items concerned.

You should never use ordinary lubricants on standing rigging as they will not prevent salt water penetration into fittings only Rigging Guard can prevent water ingress. If you do use ordinary grease or lubricants you could be speeding up the corrosion process by introducing unwanted chemicals that will react with the stainless steel and salt water.

Independent Rigging Maintenance Links

External Links:

"Sailing Today" - Mast Safety Article [PDF]

http://www.stalok.com/

http://www.dixielandmarine.com/yachts/DLrigprob.html

http://www.navtec.net/support/riggingmatt.cfm

http://www.practical-sailor.com/marine/sailboat_rig.html

http://www.practical-sailor.com/newspics/charts/905rig.pdf

http://www.cncphotoalbum.com/doityourself/mastchecklist/mastchecklist.htm

http://www.kzmarine.co.nz/images/searig/Rigcheck.pdf

http://home.cogeco.ca/~mquill/chain_rope_splice.html

http://www.bosunsupplies.com/Corrosion.cfm

http://www.hellersolutions.com/C350/rigging.asp

http://www.turbolink.co.uk/jlasurveys/surveyprep.html#Fuel%20and%20electrics

http://www.anythingmarine.co.uk/Passage/PDF/Spring_Preps.pdf

http://www.ybw.com/forums/showflat.php/Cat/0/Number/1971956/Main

http://www.popesails.com/rigging.html

http://www.juststainless.co.uk/products/wire_parts/wire_parts.asp

Rigging Maintenance Tips:

• If you have plastic sleeves fitted to any of your rigging wire rope remove them now. It will cause rust on the wires which will run down into your fittings and make them rust from the inside. Its better to have dirty sails than rusty wires.
  
• If your sails chafe on the rigging why not put a reinforcing patch on the sail where it chafes. You can then replace the patch when it wears.
  
• Never clamp anything to your standing rigging that is not 316 stainless steel and never introduce pressure points. If you do clamp 304 stainless to your rigging then these items can rust quite quickly. The resulting rust will run down the wire rope and start corroding the fittings from the inside.
  
• To test for 316 or A4 stainless always keep a magnet in your tool box. These grades of stainless are non magnetic but 304 stainless is magnetic. Reject anything that has magnetic attraction as it will corrode rapidly in the marine environment. (See the links on the Independent Links for in depth information from other sources both from the UK and USA).

FAQ

(Frequently asked questions)

Question: If I use Rigging Guard how often would I need to recoat the wires and fittings?
Answer: Its difficult to answer this as every boat has its owns set of unique environmental and usage conditions. If you are in Europe we would suggest about every six months would be sufficient but again depending on usage and conditions you may only need to recoat every 12 months. In tropical conditions and with a lot of miles being sailed we would recommend every three to four months.

Question: Will Rigging Guard mark my sails?
Answer: Rigging Guard is virtually colourless when applied so it will not mark your sails. However if it gets ingrained with dirt then the dirt may get transferred. In this case rub Rigging Guard well into the surfaces which come into contact with sails or sheets and recoat more frequently, this will prevent any rub off and will ensure sails stay clean.

Question: I have got a new boat. Can I put Rigging Guard on the engine?
Answer: You should not apply Rigging Guard to the engine but you can apply it to sea cocks and other corrosion prone items in the engine room such as stuffing boxes and copper pipes etc. Inside the boat you can apply it to decorative brass, copper and aluminium to stop oxidation and polishing as well as through hull bolts etc.

Question: I have not used Rigging Guard and my Rigging is rusty and there is one strand broken in one of the wires. Can I put Rigging Guard on top of the rust?
Answer: Rigging Guard can be applied over rust to arrest the progress of any further rust. In this case however it should be considered to be a stop gap measure until any remedial work can be undertaken. This is especially important as you say one of the strands is broken. This indicates that the rigging is past its best and should at least be inspected by a professional rigger. You should not put to sea until you are satisfied that the rigging is in good order.

Question: I have a new boat. Is there any point in putting Rigging Guard on now or should I wait a few years?
Answer: It is a very good idea to apply Rigging Guard to new rigging before any salt gets into the crevices and starts the oxidation process.

Question: Will applying Rigging Guard invalidate my warranty on a new boat?
Answer: We can’t imagine why it would invalidate the warranty but if you are concerned consult the manufacturer. We will be happy to discuss this with them if they have any concerns.

Question: I haven’t got a windlass for raising the anchor but pull it up by hand, should I coat the anchor chain with Rigging Guard?
Answer: You should not apply Rigging Guard to the chain under any circumstances as you will not be able to get a good grip to pull the anchor up.

ACW Coatings is a range of specially engineered multifunctional rust and corrosion inhibitors which protect structures and machinery from the planets harsh environments. Without some form of defense the corrosive power of the weather and the extreme conditions on land and sea will always win out over man made metals. This is why you need to use protective coatings you can rely on. At GUK Manufacturing, we are at the forefront of corrosion control. ACW Coatings has been designed to combat the corrosive and costly power of nature ensuring your machinery, structures and vessels continue to function and perform at optimum capability.

There are four ACW (Anti Corrosion Wax) coatings in the range each consisting of a special blend of waxes, oils and greases chemically formulated for its specific application. All the grades are compatible with all metal surfaces including: panelling, framework, steel and iron work, bolts, chains, cabling, wire rope, mechanical mechanisms etc catering for ships, oil rigs, bridges, walkways, buildings, pylons, heavy duty machinery, pilings, piers, theme parks, locks and various other industrial applications. Please enquire for project suitability.

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ACW Grade I - provides 1 to 3 years corrosion protection and is ideal for regularly inspected or safety critical mechanisms or surfaces that experience little to zero contact with other surfaces.

ACW Grade II - provides protection for up to 12 years on surfaces experiencing little to zero contact with other surfaces.

ACW Grade III - is suitable for low impact/abrasion and long term protection or mothballing for up to 50 years.

Specification

GUK Manufacturing produces the world’s best performing products in preventing and controlling corrosion - ACW Coatings. The unique technology and materials GUK Manufacturing employs in the formulation and production of ACW Coatings provides industry with cost effective high performance coatings suitable for a variety of applications. ACW Coatings outperforms other corrosion prevention systems in a variety of areas resulting in significantly reduced costs:

Application and removal - quick and simple ensuring labour time and costs are minimalised.

Corrosion Arrest - Whilst we advise surfaces are corrosion free prior to application ACW Coatings will arrest any corrosion present at the time of application enabling further savings in labour time and money.

ACW Coatings is a single component protection system requiring minimal application training and no specialised equipment.

Self Healing Technology - Maintenance costs are very low compared to other systems, ACW Coatings benefits from self healing technology against small sharp penetrating impacts with certain grades able to withstand more generalised impacts and abrasion ensuring premature failure is virtually eradicated. If a coating is compromised repair is a quick, inexpensive and simple process.

ACW Coatings doesn’t blister or crack
Unlike paints, resins, lead based & zinc primers etc. ACW Coatings will not crack or blister in any climate or environment due to the waxy composition of the range. Every grade is weather, salt and fresh water resistant and can be chemically tailored to individual climates.

High Adhesion, Low Erosion
ACW Coatings has excellent adhesion properties and each grade will function within its expected parameters which in some cases will be up to 50 years.

Multifunctional Coatings
ACW Coatings is suitable for all metal surfaces in a variety of industries and environments; however they are also suitable for protecting and applying to wood, painted surfaces, rubber and other various materials.

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Application & Operation

ACW Coatings is very simple to use in every respect, so much so this single page whilst not a comprehensive user guide is enough to adequately instruct a complete novice.

Surface preparation
There is no need to prepare surfaces prior to application other than to remove any oil contamination. This can be achieved with steam cleaning equipment. Any existing rust should ideally be repaired but this is not essential as ACW Coatings will arrest any existing rust until such time that it can be repaired.

ACW Coatings can be applied over dust, dirt, water and thin soil deposits if required; however best results are obtained if the majority is cleaned off first. Very often ideal conditions do not exist on site so ACW Coatings is excellent in real world situations with inexperienced staff.

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Application
Compared to the brushed versions the sprayed formulations will have higher viscosity and as such will require twice as much product to treat the same surface area; application time however is dramatically reduced. For very large surface areas we would recommend spray application at low pressure circa 1 to 2 bar or whatever is appropriate for the equipment in use at the time.

Basic application Process:
1. Choose Grade and formulation to be used
2. Spray or brush on first coat and leave for a few hours to harden
3. Apply second coat if required
4. Additional coats can be applied as desired

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Maintenance
As long as the correct grade is used and the coating requirements are met then maintenance of the ACW Coating will not be necessary. If unforeseen circumstances arise outside of the chosen grade’s parameters resulting in a compromised coating maintenance will be required. The area in need of repair can simply be brushed over and filled in with the relevant grade.

If the compromised coating is too badly damaged for the self healing process to take place and the width of the damage is less than two centimetres a heatgun can be used to heal the coating. Heatguns can also be used to achieve smooth uniform coating surfaces if appearance is important.

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Removal
ACW Coatings can be removed with either white spirit or for large items of equipment/surface areas steam cleaning can be used for removal. For complex structures with overhangs, crevices etc then steam cleaning will be quicker and more effective. Smaller items can be fully submersed in white spirit.

ACW Grade I

ACW Grade I provides 1 to 3 years corrosion protection and is ideal for regularly inspected or safety
critical mechanisms or surfaces that experience little to zero contact with other surfaces.

• Saves thousands on costly repairs and cleaning bills
  
• Can be rubbed into surfaces which experience moderate contact with external sources
• Prevents failure of critical systems
  
• Packaging options: 2, 4, 8, 30 & 60 litres (alternative options made to order)

Performance:
Length of protection: up to 12 months (single coat); up tp 3 years (multi coat)
(depending on local conditions)
Cure time: Instant (brushed); 4 to 6 hours (sprayed)
Cured Composition: soft waxy/tacky surface
Colour: Transparent (single coat); Pale Yellow (multiple coats)
Application method: Brush or Spray (single or multiple coats)
Reapplication: Single coat - every 6 months for extra protection
otherwise every 12 months depending on local conditions
Removal: white spirit or steam clean

Suitability:
i) Marine vessels and structures where safety critical items need protection
from the harsh marine environment.
ii) Architectural rigging and corrosion prone surfaces found on machinery, buildings,
walkways and bridges where appearance needs to maintained without masking
the original surface.
iii) Indoor Museum applications and regularly maintained outdoor sculptures,
monuments and exhibits. Ideal for surfaces where the original appearance is
essential but at the same time needs corrosion protection i.e. interior exhibits
which normally need regular polishing to keep a shiny surface without rust or
dulling. Stops oxidation on all ferrous non ferrous metals. Copper and brass
no longer need regular polishing saving considerable labour costs.

COVERAGE TABLE

(Corrosion protection from exposure to weather/outside storage)

ACW Grade II

ACW Grade II provides protection for up to 12 years on surfaces experiencing little to zero
contact with other surfaces.

• Saves thousands on costly repairs and cleaning bills
  
• Can be rubbed into surfaces which experience moderate contact with external sources
• Packaging options: 2, 4, 8, 30 & 60 litres (alternative options made to order)

Performance:
Length of protection: up to 3 years (single coat); up tp 12 years (multi coat)
(depending on local conditions)
Cure time: Instant (brushed); 4 to 6 hours (sprayed)
Cured Composition: firm waxy/tacky surface
Colour: Semi Transparent (single coat); Light Brown (multiple coats)
Application method: Brush or Spray (single or multiple coats)
Reapplication: as desired
Removal: white spirit or steam clean

Suitability:
i) Marine vessels and structures where longer term protection is required.
ii) Architectural rigging and corrosion prone surfaces found on machinery, buildings,
walkways and bridges where appearance is important yet not critical, or where
long term protection is required.
iii) Outdoor Museum applications, i.e. sculptures, monuments and exhibits which
need long term protection yet experience minimal human contact.

COVERAGE TABLE

(Corrosion protection from exposure to weather/outside storage)

ACW Grade III

ACW Grade III is suitable for low impact/abrasion and long term protection or mothballing for
up to 50 years.

• Saves thousands on costly repairs and maintenance bills
  
• Prevents corrosion in the long term
• Packaging options: 2, 4, 8, 30 & 60 litres (alternative options made to order)

Performance:
Length of protection: up to 10 years (single coat); up to 50 years (multi coat)
(depending on local conditions)
Cure time: Instant (brushed); 4 to 6 hours (sprayed)
Cured Composition: hard waxy surface
Colour: Translucent Light Brown (single coat); Dark Brown (multiple coats)
Application method: Brush or Spray (single or multiple coats)
Reapplication: as desired
Removal: white spirit or steam clean

Suitability:
i) Marine vessels and structures where long term protection is required.
ii) Architectural rigging and corrosion prone surfaces found on machinery, buildings,
walkways and bridges where long term protection is required.
iii) Mothballing and winterisation of industrial and military equipment and other
hardware/structures that needs to be stored/protected for extended periods
without the need for regular recoating.

COVERAGE TABLE

(Corrosion protection from exposure to weather/outside storage)

Low Resolution Brochure

Click here to download - ACW Brochure - Part 1 (9.1mb)

Click here to download - ACW Brochure - Part 2 (4.1mb)

Cargo Ships Brochure

Click here to download - ACW Cargo Ships (2.4mb) - UK

Click here to download - ACW Cargo Ships (2.4mb) - Turkey

Marine Rope Cutters manufactured from high grade(BS970-316) Stainless Steel a powerful and effective solution for retail and commercial clients. Suitable for commercial and leisure vessels British design and engineering 5 year guarantee against faulty materials & workmanship Clamp-On to fit shaft sizes 20mm (3/4") - 130mm (5") Slide-On to fit shaft sizes 20mm (3/4") - 50mm (2") Clamp-On version available for underwater fitting No moving parts to service or fail Cutting action avoids vibrations/shocks often associated with "chopping" style cutters Over 13,000 fitted worldwide
Product Operation - How does it work? The Prop Protector is a simple shaft driven rope cutter, rotating with the shaft and instantly cutting any rope, weed or debris picked up or snagged by the propeller. Manufactured from high grade (316) Stainless Steel, the Prop Protector is easy to install - fully installed in minutes - with your boat out of the water or between tides. The clamp-on version can even be fitted by a diver if underwater installation is required. The Prop Protector sits on the shaft, between the propeller hub and the stern bearing, waiting to cut anything that threatens to entangle it. There are no moving parts to fail - just a razor sharp marine grade stainless steel blade - ready to slice through most marine debris. Available to suit shaft sizes 20mm (¾ in) to 130mm (5 in). Prop Protectors can be fitted to a wide range of boats (yachts, motor cruisers, fishing vessels, barges etc), and are available in two models, the Clamp-On & the Slide-On.

"The Prop Protector sits on the shaft, between the propeller hub and the stern bearing, waiting to cut anything that threatens to entangle it. No moving parts to fail - just a razor sharp marine grade stainless steel blade - ready to slice through most marine debris".

Specifications

PLEASE NOTE: The Prop Protector is NOT designed to be used with outboard engines, stern drive engines or Saildrives. Diagrams are not to scale and the gaps shown are exaggerated for clarity.

Click here for Technical Specification Table

The Slide-On Prop Protector

Manufactured in one piece with a width of only 12mm (0.47"), it is designed for installations where the gap between the propeller and the shaft bearing is small.

A gap of 18mm (0.7") is sufficient; this includes 6mm (1/4") of space for water to circulate to the shaft bearing. This type is available for shafts of 20mm (3/4") dia. up to 50mm (2 "). It simply slides onto the shaft after the propeller has been removed and is secured with a set screw that locates into a small drill dimple made in the shaft.

The Clamp-On Prop Protector

Supplied as an assembly that is split into two halves along the longitudinal axis so that it can be installed on the shaft without removing the propeller. The width is 17mm (0.67"). A gap of 23mm (0.9") is sufficient; this includes 6mm (1/4") of space for water to circulate to the shaft bearing. It is clamped onto the shaft by two Allen screws and is also fixed by a set screw that locates into a small drill dimple made in the shaft. This type is available for shafts of 20mm (3/4") dia. up to 40mm (1 5/8").

Medium Size: Manufactured and fitted as the Standard, the width is the same, the only difference is the blade diameter that is 105mm (4.13"). This type is available for shafts of 1 3/4" dia. & 2" and 45mm & 50mm.

Special: As above but with a larger blade diameter of 127mm (5"), for vessels with extra-large stern bearings and big propeller hubs.

Large Size: Manufactured and fitted as above, these large cutters have a width of 22mm (0.87") . A gap of 32mm (1.26") is sufficient; this includes 10mm (0.39") of space for water to circulate to the shaft bearing.

Extra Large Size: For vessels that are built with large struts or stern bearings. They are fitted in the same way as other Clamp-On units and have a width of 30mm (1.18"). A gap of 42mm (1.65") is sufficient; this includes 12mm (0.47") of space for water to circulate to the shaft bearing.

Cutters in the range 65mm (2 3/4") to 130mm (5") are for use on large vessels such as trawlers, fishing boats, harbour patrol boats, luxury yachts and cruisers. These cutters have a width of 33mm (1.3"). Not all cutters in this range are held in stock. ALL EXTRA LARGE CUTTERS ARE SUPPLIED WITH SELF LOCKING FASTENERS AS STANDARD.

Technical Specifications

UNIT TYPE	FOR SHAFT DIAMETERS	Blade Dia.	Unit Width	Min Gap
Slide-on	3/4" 7/8" 1"  1 1/8" 1 1/4" 20mm 22mm 25mm 28mm 30mm	3.15" 80mm	0.47" 12mm	0.7" 18mm
Slide-on Special	1 1/4"	3.94" 100mm	0.47" 12mm	0.7" 18mm
Slide-on	1 3/8" 1 1/2" 35mm 40mm	3.94" 100mm	0.47" 12mm	0.7" 18mm
Slide-on	1 3/4" 2" 45mm 50mm	4.72" 120mm	0.47" 12mm	0.7" 18mm
Clamp-on Standard	3/4" 7/8" 1" 20mm 22mm 25mm	3.15" 80mm	0.67" 17mm	0.9" 23mm
Clamp-on Standard	1 1/8" 1 1/4" 30mm	3.35" 85mm	0.67" 17mm	0.9" 23mm
Clamp-on Standard	1 3/8" 1 1/2" 1 5/8" 35mm 40mm	3.74" 95mm	0.67" 17mm	0.9" 23mm
Clamp-on Medium	1 3/4" 2" 45mm 50mm	4.13" 105mm	0.67" 17mm	0.9" 23mm
Clamp-on Special	1 3/4" 2" 45mm 50mm	5.00" 127mm	0.67" 17mm	0.9" 23mm
Clamp-on Large	2 1/4" 2 1/2" 55mm 60mm	4.57" 116mm	0.87" 22mm	1.26" 32mm
Clamp-on Extra Large	1 1/2" 1 3/4" 2" 2 1/4" 2 1/2" 45mm 50mm 55mm 60mm	6" 150mm	1.18" 30mm	1.65" 42mm
Clamp-on Extra Large	2 3/4" 3" 3 1/4" 3 3/8" 3 1/2" 4" 65mm 80mm 85mm 90mm 100mm	7.48" 190mm	1.3" 33mm	1.77" 45mm

PLEASE CONTACT US FOR SHAFT SIZES OVER 100mm (4")

Installation The diagram on the right illustrates the components associated with the selection and installation of all types of Prop Protector. Although the diagram shows one type of stern shaft bearing, the following notes apply equally to craft fitted with either P or A struts or brackets.

In most installations, the gap between the propeller hub and the shaft bearing is wide enough to allow the installation of a Prop Protector. This gap must be sufficiently wide to accomodate the cutter plus an additional gap of 6mm (1/4 inch) between the Protector and the bearing. Extra Large cutters need a gap of approximately 12mm (1/2 inch).

This extra gap is necessary to allow water to circulate to the shaft bearing for cooling and lubrication. It also allows for any end float on the prop shaft. If there is excessive end float due to gearbox end play or over-flexible engine mounts, this extra movement has to be provided for. The recommended gaps for all types of Prop Protector are shown in the specifications. If the gap on your shaft is inadequate, it can be increased by any of the following methods:

1. For adjustments of between 2mm (0.08 inch) and 5mm (0.2 inch), it may be possible to disconnect the prop shaft from the prop shaft coupling, move the shaft aft by the required amount and re-tighten the connection. If this method is used it is important to ensure that there is still suficient engagement between the shaft and coupling to maintain a secure connection under full power.

2. For larger adjustments, a coupling spacer or a flexible coupling may be fitted between the coupling and the gearbox flange.

We can now supply coupling spacers for most of the popular gearboxes 'off the shelf'. See order page for further details. We can also arrange for the supply of spacers for gearboxes not listed. Please allow three weeks for delivery and supply full details of your engine and gearbox.

Underwater Installation

One of the unique features of the Prop Protectors is that they can be installed with the vessel afloat.

However, the thread-locking compound supplied with each cutter to secure the fastenings is intended for use only with the vessel out of the water; the compound will not cure underwater.

Owners wishing to carry out underwater installation should not use the fastenings or the thread-locking compound supplied, but should order the special self-locking fastenings we supply for this purpose and which are described below:

For all Slide-On cutters from 19mm (3/4 inch) to 50mm (2 inch) diameter shafts a single set screw is required per cutter.

For all Clamp-On standard, medium and large cutters for shafts 19mm (3/4inch) to 62mm (2 1/2inch) diameter, one set screw and two cap screws are required per cutter.

For all Clamp-On extra large cutters for shafts 37mm (1 1/2 inches) to 100mm (4 inches) diameter, a similar but larger set of fastenings is required per cutter.

These fastenings have been fitted with a plastic insert which serves as a self-locking mechanism and can be re-used up to five times. 

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Other factors to consider when selecting the correct Prop Protector for your vessel

1. The diameter of the cutter blade must be larger than the diameter of the propeller hub and of the bearing housing in the strut of stern tube. If the blade is shielded by either of these, it cannot cut entangled line. The overlap of the blade should be at least 6mm (1/4 inch).

2. The minimum gap specified for each type and size of cutter should be of UNTAPERED shaft. If all or part of the gap consists of tapered shaft, a cutter for a slightly smaller shaft diameter should be selected so that it can then be machined to match the taper of the shaft. 3. Prop Protectors may be installed with the vessel afloat. Owners wishing to carry out underwater installation should not use the standard fastenings normally supplied but should order the special, self-locking fastenings available for this purpose. All Prop Protectors are supplied with A4 Stainless steel fastenings, allen keys, thread locking fluid and installation instructions. Both types are easy to install. For instance, the Clamp-On cutters can be installed in ten minutes

Typical Prop Protector Kit

Shown on the right is a typical Prop Protector kit. Kit includes Prop Protector, allen screws, allen keys, locking fluid, safety warning labels and full fitting instructions.

Independent Reviews

Motor Boat Monthly: Comprehensive Review DEC 2008

Sailing Today: Could You Fit a Rope Cutter?

Sailing Today Test Review

Practical Sailor Test Review

FAQ

(Frequently asked questions)

Q1. How much space is required on the shaft for a PROP PROTECTOR?

A1. The SLIDE-ON type requires a gap on the shaft of 18mm (0.7") and the CLAMP-ON a gap of 23mm (0.9"). These dimensions include a 6mm (0.25") of space on the shaft to allow water to circulate to the cutless bearing.

Q2. How long does it take to install the PROP PROTECTOR?

A2. The Clamp-On version can be fitted in approximatly 10 minutes as the propeller does NOT need to be removed. TheSlide-On version would take between 30 minutes and one hour as the propeller MUST be removed before fitting.

Q3. Will I need to buy new bearings for the PROP PROTECTOR every two years or so as with other cutters?

A3. No. PROP PROTECTORS have no moving parts and require no bearings.

Q4. Will I have to install zincs for the PROP PROTECTOR?

A4. No. The zinc usually installed on the propeller shaft will also protect the PROP PROTECTOR.

Q5. Will the PROP PROTECTOR corrode?

A5. No. PROP PROTECTORS are made of high grade 316 stainless steel and will never corrode.

Q6. Will I have to send my PROP PROTECTOR to the manufacturer for sharpening as with other shaft drive cutters?

A6. In the unlikely event that your Prop Protector requires sharpening, this can be easily done by you with a ceramic sharpening stone or a metal file.

Q7. Will my PROP PROTECTOR break on sun-hardened rope as some "chopping" style cutters tend to do?

A7. No, your PROP PROTECTOR will continue cutting while the shaft is turning.

Q8. Will my PROP PROTECTOR affect hull speed to a measurable degree?

A8. For vessels cruising at 25 knots or less the affect on boat speed is negligible. For high speed vessels at above 35 knots, RPM may have to be increased by about 10%.

Q9. Will my PROP PROTECTOR make a noise when the shaft is turning as some "chopping" style cutters do?

A9. No. PROP PROTECTORS are completely silent in operation.

Q10. How long has PROP PROTECTOR been on the market?

A10. PROP PROTECTOR has been selling in Europe since 1992, and the USA since 1995. Over 13,000 are presently in use.