At present, the most widely regarded techniques for foul prevention are preventing growth by keeping the boat clear of water (as well as regular scrubbing), the application of some sort of ablative antifoul, coating with a semi-permanent copper treatment, and in more modern developments, foul release coatings.
Of these options, keeping your boat out of the water without any form of paint applied is the best way to increase speed, reduce fuel efficiency (a 34-knot boat can lose 2 knots from a generous layer of paint alone) and prevent fouling. Together with being the most environmentally sound option, having a polished gelcoat with no paint will seamlessly cut through the water with reduced drag compared to copper-oxide based antifoul coating. But unfortunately, unless you can afford to keep your boat out of the water and suspended on a lift or dry stacking system, this method is highly inconvenient. A newly polished hull will need scrubbing down every few weeks and a scratched or pitted one will attract growth in a few days.
Antifouling paints and semi-permanent treatments work by dissuading and, more often than not, killing off organic matter by use of a biocide, usually a copper compound. Copper oxide and copper thiocyanate are common biocides incorporated by antifouls that can work in conjunction with co-biocides that target specific types of algae and slime.
Cuprotect and copper coat are examples of longer term treatments which rely on copper alone. They are usually in the form of tiny copper granules sprayed onto or suspended on a non-eroding resin coating.
A more contemporary solution to fouling is the use of foul release coatings such as AquaMarine FRC. These coatings use silicone and fluropolymer technologies to create a super-smooth hydrophobic layer which segregates an apparent repulsion between water and nonpolar substances. So, it repels and attracts at the same time. This surface means that marine life finds it difficult to attach to. Therefore, this means any biofoul can literally be wiped or jet washed off.
It is widely regarded that a conventional eroding antifoul paint is harmful but effective initially, becoming much less so over time. The longer-term treatments should maintain a similar, yet arguably less effective performance year after year.
Over time, all antifouls become less effective and this relates to the fact that all ablative paints work in the same way. The active biocides, like cuprous oxide and other algaecides, are held in an inert resin paint matrix (pigments, solvents, binders and small amounts of other additives). The active biocides progressively leach out of the paint matrix after being submerged in water in order to hinder any fouling growth. Consequently, this eventually leaves behind a honeycomb of ‘dead’ paint.
As the boat moves through the water or if left to the effects of a tidal birth, this ‘dead’ paint will be worn away revealing a fresh biocide-laden layer. When boats are left unused for extended periods of time or in non-tidal births, problems start to develop. Slime and barnacles are able to settle on a thicker layer of ‘dead’ paint that accumulates.
In an effort to tackle this issue, some antifouling paints have been tinkered with by fine-tuning the leach rate of the biocides and the eroding properties of the paint matrix. This has allowed manufacturers to extend the life of antifoul paints by two or more seasons. However, this does not nullify the issue that boats are left unused for long periods of time.
Tributyl tin (TBT) paints of the 1980’s are true self polishing copolymers that were thought to maintain the same high level of performance regardless of whether the boat was static or moving. The active biocide, tributyl tin oxide, is a colourless soluble product that is chemically part of the paint matrix itself. As the TBT is exposed to the water, a chemical reaction can take place in which a soluble compound is formed that can dissolve in the water.
This antifoul does not rely on the physical action of the water passing over the hull, instead allowing for the chemical reaction to expose the fresh new layer of biocide-laden paint. As a result, this means that it prevents the annual build-up of paint, can be brightly coloured or left clear, may make older boats faster by smoothing out imperfections on the hull surface and most importantly provide consistent performance even when the boat is left in the marina.
Unfortunately, TBT left in high enough concentrations around estuaries was found to cause severe, long lasting damage to marine life. This lead to a ban on the use of TBT’s for leisure vessels under 25m in the UK and Holland in the 1980’s.
Although many boat owners stocked up on TBT’s during this time or even attempted to purchase it at present from unscrupulous sources, the culmination of a worldwide ban in 2002 means that its use is prohibited and heavily frowned upon.
Conversely, foul release coatings are eco-friendly as compared to toxic antifouls and possess the same consistent long term effect of TBT based foul repellents. The silicone based coatings can act as a non-harmful reverse adhesive layer that biofoul find very difficult to adhere to and lasting around 5 years!
Thanks for using the www.aquamarineuk.com website. It is solely owned and controlled by AquaMarine (owned by Fresh Formulations Ltd, Stanroyd Mill, Colne, Lancashire, BB8 7BW). Use of the name AquaMarine, refers to Fresh Formulations Ltd for the purpose of this document here on in. The following terms and conditions apply to your use of this website. In using this website you acknowledge that you have read and understood and agreed to comply with the terms of this agreement and any directives in application / use of AquaMarine products including, AquaMarine PROP, AquaMarine HULL and AquaMarine RIB.
AquaMarine may make changes to the website that include modifications, improvements and additions, change of images, products and services referred to within the website without notice. AquaMarine may also, without notice, make changes to the terms and conditions herewith and any changes will be available. Your use of this website following these changes constitutes your agreement to follow and be bound by the terms as changed. On occasion, additional terms and conditions may apply to the purchase of specific products and other uses of this website. By purchasing from the site and by using the website, you agree to such terms and conditions.
WEBSITE CONTENT DISCLAIMER & LIMITATION OF LIABILITY
The www.aquamarineuk.com website and the information, names, logos, icons and pictures relating to our products is provided on an ‘available’ basis without representation or warranty of any kind. To the maximum extent permitted by law, AquaMarine excludes all warranties, obligations, representations, liabilities, terms or conditions (whether implied or not or arise in contract, by statute otherwise and irrespective of the negligence of AquaMarine, it’s employees or agents) in connection with the information, materials or graphics on this website (including, without limitation, any implied warranty of satisfactory quality, fitness for a particular purpose or non-infringement of intellectual property rights).
AquaMarine does not warrant that the items contained in this website or it’s content will be error-free, that defects will be corrected, or that this website or it’s server are free of viruses or other harmful components. However, it shall use reasonable process to ensure that the website is free of viruses or other harmful components.
While information and content on this website has been provided in good faith to provide information about the AquaMarine paint coating range, AquaMarine (Fresh Formulations), it’s employees, affiliates and subsidiaries shall in no event be liable for any damages of any kind whatsoever, including limitation, direct, incidental, special indirect or consequential losses or any losses whatsoever resulting from loss of use, data, damage or profits, whether in an action for breach of contract, negligence or other tortious action, arising out of or in connection with the use of or access to this website or in connection with any materials, products, information or recommendations on this website.
Please note that the information, materials and graphics available on the AquaMarine website may be incomplete, out of date or incorrect. It is therefore important that you verify and confirm information directly with AquaMarine before taking any action in reliance upon it. The information, materials and graphics available on this website may be subject to change without notice.
This website may contain links to or may contain references to other websites, which are neither, directly, or indirectly operated by AquaMarine. Therefore, we have no responsibility whatsoever for the contents of any such linked website or any link contained in such a linked site. The links supplied are solely for your convenience and therefore, they do not imply any endorsement by the AquaMarine brand whatsoever. In no event is AquaMarine liable for the contents or practices of third party websites linking to this website or for third party websites linked to.
Use of content from the AquaMarine site is prohibited. By visiting the website you agree not to add to, alter, substitute or amend wholly or in any part any information, images or other such content from this website.
ONLINE SALES / PURCHASE OF AQUAMARINE PRODUCTS
Any products displayed on this website for sale, that are purchased by a customer or business, will constitute an offer to buy and shall be subject to our standard conditions of sale.
PRIVACY & CONFIDENTIALITY
You agree that AquaMarine may use or disclose information about your demographics and use of the website in a manner that does not reveal your identity.
The name AquaMarine is trademarked and owned by AquaMarine and therefore, any use of the name AquaMarine is wholly prohibited. Any use without express permission by AquaMarine in writing, will constitute an infringement of copyright. AquaMarine reserves the right in this instance to pursue damages for use of the trademark and request by law that any use of the name is stopped immediately.
The contents of the AquaMarine website including without limitation all images, illustrations, designs, photographs, icons, video content, graphics, written materials and any other materials that appear as part of this website are the property of AquaMarine.
The copying or modification of any item on this website is strictly prohibited, unless written permission is obtained from AquaMarine.
You may print or download extracts of materials for non-commercial, informational or personal use and you may also copy this material for the purposes of sending it, with no commercial objective to individuals for their personal use, as long as you acknowledge that AquaMarine is the source.
Nothing contained herein shall be construed as conferring by implication, estoppel or otherwise any licence or right under any patent or trademark of AquaMarine.
In relation to any materials on this website, AquaMarine gives you permission to download items and use them for the purpose of promoting sales if you are a distributor or stockist of AquaMarine products.
You will use these materials in such a way as to promote AquaMarine’s name and reputation.
SEVERANCE & WAIVER
If any provision of these terms and conditions is found to be invalid by any court having jurisdiction the invalidity of such provision shall not affect the validity of the remaining provisions of this agreement, which shall remain in force.
This agreement constitutes the entire agreement between AquaMarine and you and super-cedes any prior understanding or agreements (written or oral).
APPLICABLE LAW & JURISDICATION
These terms and conditions shall be governed by, construed and enforced in accordance with English Law.
OTHER IMPORTANT INFORMATION
All programs, products, processes, software, technology, information, know-how, publications, designs, or ideas may be the subject of other rights, including other intellectual property rights, which are duly acknowledged.
Nothing contained within our website constitutes a contract unless specifically agreed with you.
None of LBS Global’s (T/A AquaMarine) employees or Directors will be liable for any indirect, incidental, consequential, or punitive damages or any other damages whatsoever, whether in an action of contract, statute, tort (including, without limitation, negligence), or otherwise, relating to the use of the website or any of the information contained within it.
Our website is intended to provide general information on a particular subject or subjects and is not an exhaustive treatment of such subject(s). Accordingly, the information in this document is not intended to constitute consultancy advice or services.
By using our website, you agree to these Terms of Usage.
If you have any queries on any of the above, please Contact Us
+44 1282 873 320
We call you