- Silicone-based antifouling coatings work by creating an ultra-smooth, non-stick surface with low surface energy.
- This prevents the build-up of microfouling (slime), which, if not removed, is said to lead to a GHG increase of up to 25-30% depending on the ship type, speed, and sea conditions.
A recent report by the Maritime Emissions Reduction Center (MERC) highlights the potential of silicone-based antifouling paints in promoting sustainable shipping practices, reports Offshore Energy.
These advanced hull coatings create ultra-smooth, non-stick surfaces that prevent microfouling, or slime, accumulation. If left unchecked, such slime can increase greenhouse gas (GHG) emissions by up to 25-30%, depending on the ship’s type, speed, and sea conditions.
Silicone-Based Antifouling Paints: A Game Changer?
Research from the Swedish KTH Royal Institute of Technology indicates that even a thin biofilm on a ship’s hull can lead to an 80% rise in fuel consumption. By preventing biofilm formation, silicone-based antifouling coatings offer a promising solution for the maritime industry, with some manufacturers claiming potential fuel savings of up to 10%.
Unlike traditional antifouling paints, silicone-based coatings do not degrade over time and are free from biocides—chemicals used to control harmful organisms. This aligns with findings from the International Maritime Organization, which reported that removing slime from ship hulls could reduce GHG emissions by up to 25%.
However, MERC advises that the effectiveness of silicone-based antifouling paints can vary based on factors such as vessel type, operating profile, and trade routes. These coatings are particularly susceptible to damage in high-impact areas like the bulbous bow and propeller, where contact with anchors or docking structures can compromise their performance. To optimize cost and durability, MERC suggests that operators consider hybrid approaches, combining silicone and traditional antifouling systems, applying each where most appropriate.
In summary, while silicone-based antifouling paints present a promising avenue for reducing emissions and enhancing fuel efficiency in shipping, their application requires careful consideration to ensure optimal performance and cost-effectiveness.
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Source: Offshore Energy
