HEMPEL
Hempel is shaping a brighter future with sustainable coating solutions. The company plans to be carbon neutral in its own operations by 2025 and has made a commitment to set science-based targets in their value chain. Hempaguard X7 and Hempasil X3+ bring real tangible benefits to the industry and are fundamentally different and unique compared to all currently available hull coatings. These innovative coatings provide exceptional performance in both warm and cold waters, when cruising at slow or fast speeds and even when static for extended period of time. This innovative range of underwater hull coatings will help reduce annual fuel consumption, minimise green-house gas emissions, reduce paint volume and consumption and keep the hull fouling free. For more details visit
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in white paints are more resilient than the inorganic pigments used in coloured topcoats and as such give the impression of significant longevity.”
“Another, but hopefully lesser issue if you are using a competent paint supplier,” says Hempel’s Chris Toole, “is the batch to batch variation that can occur using coloured products. Despite significant improvements and better QC methods, ultimately coloured pigments are either natural and subject to variation or have strong tint strength meaning even a small amount can impact the colour more than expected. Painting larger yachts and not being officious ensuring the same batch for the complete job can lead to the well-known tiger striping also seen when colour paints aren’t fully mixed. Of course, with whites this is less of a problem.”
Micheli Gabriele the Technical Manager at MCR Marine, the yacht painting surveyors in Italy believes white is the colour that guarantees the best performance and is standard maintenance. Dark colours, moreover, would require different procedures during the yacht building phase, to prepare the surfaces and structures for when they will be exposed to UV rays and thus withstand extreme temperatures.
Clearly, Ultra Violet absorption plays a significant role. Inge De Jonge, Imron Marine, Product and Marketing Manager for Axalta in Europe, the Middle East and Africa, has a more technical and scientific answer. He says, “UV absorption is controlled by the final product used when painting a yacht. There are two paint systems available to painters – a direct gloss 2K topcoat or the clear-over-base system. UV sensitivity is a property built into both of these as part of the manufacturing process - the 2K topcoats in the direct gloss system, and our Imron Marine DP6940 Clearcoat, in the clear-over-base system.”
“This works effectively regardless of the colour of the basecoat, from black to white and all shades in between. While both paint systems handle UV absorption equally well, at Axalta we tend to favour the clear-over-base system largely due to the colour choice our Imron Marine Basecoat offers yacht designers and owners. It can be mixed to create any colour, including all solid, metallic, and pearlescent colours, as well as tri-stage and tinted clear colours. This really provides an infinite colour palette from which to choose while still having outstanding UV absorption properties.”
Today, Map Yachting is the only French paint brand specifically aimed at the yachting and shipbuilding market. The company, part of the Sicomin group, develops and distributes complete finishing systems for naval, military, and other high-tech industries. Ken Marcovich the company CEO says, “Another aspect of a white paint finish is that it can be a little more forgiving in terms of showing any slight surface defects or inconsistencies in the hull finish.” He adds, “This isn’t so much of a problem on the highest quality superyachts with a fully faired finish, but a coloured or metallic paint really does need the substrate to be perfect before painting. Lastly, if the vessel ever needs a repair, it is much easier to rework a section of a white painted hull, with the repair needing less technical effort and there being less risk of the repair being visible.”
174 | WINTER 2022 | ONBOARD
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