Benefits of Anti-Fouling
What is Fouling?
Fouling is the term generally used to describe the settlement and growth of marine plants and animals on submerged structures.
- Macrofouling – which includes plant (weed) and animal fouling
- Microfouling – which includes unicellular algae and bacteria (also referred to as 'slime')
It is estimated that there are in excess of 4,000 known fouling species, all of which have the potential to form colonies in a submerged surface
What is Anti-Fouling Paint?
Antifouling paint is a specialised coating, normally containing a formulation of water-soluble bioactive ingredients and organotin compounds, that is then applied to the hull of your yacht which slows the growth of barnacles, algae and marine organisms that attach to the hull.
Antifoulings tend to fall into two main categories; self-polishing and conventional antifouling. Generally, most raw materials used to make up these antifouling are similar and it is the proportions, quality and binders used that determine their properties.
Self-polishing antifouling is the most widely used for regular moving vessels, depending upon vessel speed. This type is partially soluble in water and so once immersed the resin binders are broken down in a controlled manner which continually exposes a fresh layer of biocide.
Conventional antifouling work on a principle known as contact leaching. Upon application, antifoulings dry to form an insoluble resin that is packed with biocides which leach out on contact with water to prevent fouling. The leaching process is chemically controlled ensuring that biocide is released throughout the season, however, the amount of biocide released will steadily decline.
Why Do You Need It?
Once fouling takes a hold on the hull then it can rapidly colonise the surface causing ongoing problems with performance, safety and structure, such as,
- Decreased performance
- Increased fuel consumption and cost
- Damage to propellers
- Block engine water inlets and outlets
- Cause damage to the hull’s surface, by marine growth boring into the hull.
Which system is right for you?
Choosing the correct antifouling is critical. Factors such as vessel type, speed, sailing pattern, geographical location and mooring characteristics should all be taken into account. Berger supplies a range of products to meet your needs. You may contact Berger’s representative for more details.
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