New antifouling reduces fuel costs and emissions still further

Sep 06 2019


Denmark-based coatings manufacturer, Hempel has launched a new fouling defence system – Hempaguard MaX.

This is effectively a three-coat system to provide vessels with a smoother hull. It is also claimed to reduce drag resulting in significantly lower fuel requirements, and will deliver a guaranteed maximum speed loss* of 1.2% percent over five years. 

Hempaguard MaX is applied in three layers, meaning it can be applied more quickly, thus reducing time in drydock by up to two days. The combined savings generated by new coating through reduced time in dock and increased fuel savings, could payback the cost of the coating within three months**.

Speaking at its launch in London, Hempel's Head of Marine Group Product Management, Davide Ippolito, said: "The high level of fuel savings and hull protection are achieved due to the low average hull roughness (AHR) level delivered by the whole coating system, very low speed loss over the entire operational period and improved anti-corrosive capabilities.

"Hempaguard MaX is the next logical step for shipowners and operators seeking to maximise their efficiency and reduce associated CO2 emissions. At a time where marginal gains are of importance and environmental regulations are becoming stricter, the choice of hull coating can make a significant difference."

Hempel's new system builds on the success of its flagship hull coating Hempaguard X7. Since its launch in 2013, this coating has been applied to over 1,500 vessels allowing those owners to collectively reduce their annual bunker bill by $500 mill and over 10 mill tonnes in CO2 emissions.

Hempaguard MaX’s strength lies in its ability to successfully exploit the synergies between its three different layers - Hempaprime Immerse 900, tie-coat Nexus II, and Hempaguard X8.

Top coat Hempaguard X8, which drives the antifouling performance, is built on Hempel's patented Actiguard technology. This system combines the smoothness of a silicone coating with an improved hydrogel microlayer and active ingredient to provide outstanding antifouling performance, full operational flexibility and smooth hull, the company claimed.

Hempaprime Immerse 900 is an anti-corrosive primer that can be applied in one coat, while Nexus II is a tie-coat technology with improved anti-corrosive capabilities. Together, they provide the same protection delivered by two standard maintenance epoxy coats, reduce time in the dock for faster return to service and ultimately save money for the shipowner and operators.

Hempaguard MaX used together with SHAPE, Hempel's System for Hull and Propeller Efficiency, is now the new peak for fuel efficiency available to commercial shipowners and operators, Hempel claimed.

 

*Speed loss: If a vessel’s main engine is set at a certain power output, it will propel the ship through the water at a certain speed. Over time, fouling accumulation will increase drag and cause the speed of the ship to reduce even if the main engine power output remains constant.

**Based on a VLCC with activity level of 70% and burning low sulfur fuel costing 35% more than standard bunker fuel over a five-year life cycle. Hempaguard MaX system delivers an annual saving of around $1.8 mill, compared to a market average antifouling. This equates to a return on Investment (ROI) of three months.

 



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