Finding owners willing to pilot-test an onboard remotely-operated proactive hull cleaning unit wasn’t easy, but when Jotun reached out to Wallenius Wilhelmsen, they found a partner who shared their vision for a more environmentally-responsible shipping industry.
As the operator of a fleet of 126 RoRo vessels, 11 marine terminals and 71 processing centres around the world, Wallenius Wilhelmsen is a true global giant. And while the company has a long and proud history moving cargoes all over the world, Wallenius Wilhelmsen has also been a pioneer in seeking new ways to reduce its environmental impact.
For the past decade, the company has produced an annual Sustainability Report, describing initiatives undertaken to reduce the company’s emissions and safeguard life below the water line, among other target areas. According to Geir Fagerheim, SVP Marine Operations for Wallenius Wilhelmsen, the company has a holistic approach to reducing emissions that includes everything from weather routing to engine optimization, hull coatings to sophisticated hydrodynamic hull, rudder and propeller design.
“In 2019, the company achieved a 11 per cent reduction in CO2 emissions from the year before, due in part to technical improvements,” he says. Fagerheim adds that Wallenius Wilhelmsen has also joined the “Getting to Zero Coalition”, an alliance of more than 90 companies across the maritime, energy, infrastructure and finance sectors, which are working together to develop commercially viable zero emission vessels by 2030.
“Achieving zero emission vessels won’t be easy, but we recognise that by taking a collaborative approach to common challenges, we can accelerate the development of technologies that can make a difference,” says Fagerheim. “Jotun Hull Skating Solutions certainly fits that description.”
Embracing new technologies
Jotun Hull Skating Solutions consists of five solution components; A high performance antifouling coating SeaQuantum Skate, proactive condition monitoring, inspection and proactive cleaning with advanced underwater robotic Jotun HullSkater, high-end technical service and performance and service level guarantees that fit the most challenging operations. In 2016, Jotun approached Wallenius Wilhelmsen to pilot-test the system on board one of their vessels.
Fagerheim acknowledges that some at Wallenius Wilhelmsen were sceptical at first. “The concept is a radically new approach to hull maintenance so our team had a lot of questions,” says Fagerheim. “However, once we learned that Jotun had developed a prototype in cooperation with KONGSBERG and the Swedish technology company Semcon among other partners, we decided to participate.”
Fagerheim notes that unlike most hull cleaning services, Hull Skating Solutions (HSS) is proactive, not reactive. “By removing slime and fouling before organisms have time to firmly attach to the hull, HSS not only helps owners reduce fuel costs and corresponding emissions, it helps vessels stay in compliance with increasingly strict local and global regulations designed to protect marine ecosystems from alien invasive species,” he says. “The benefits of Jotun Hull Skating Solutions align perfectly with our business strategy and sustainability goals.”
In 2017, Wallenius Wilhelmsen gave the HSS team access to the Talisman, a DWT 38500 RoRo carrier built in 2000. Geir Axel Oftedahl, Jotun’s Business Development Director (Marine), explains that unlike reactive hull cleaning services offered at many ports, owners install the Hull Skater on board. “High powered magnets attach the unit to the hull, allowing it to perform underwater inspections and proactive cleaning using HD cameras and a specially designed brush that does not damage the antifouling coating or release biocides into the water,” he explains.
The HSS Project Team applied antifouling test patches on the hull, installed the unit on board and provided training for crew members on maintenance, deployment, retrieval and storage of the unit. Once underwater, the unit is remotely controlled. “We can operate HullSkater units all over the world from our control centre here in Norway, day and night,” says Oftedahl. “We learned that depending on the size of the vessel, cleaning and inspection can take between 2-8 hours.”
Oftedahl notes that the company’s multi-year pilot test with Wallenius Wilhelmsen (and other owners, including Berge Bulk and Maersk) provided the project team with valuable insight on what worked – and what didn’t. “In addition to providing us the opportunity to test the unit under different operational conditions, Wallenius Wilhelmsen was also instrumental in helping us reach out to port authorities to ensure we could operate in compliance with local regulations,” says Oftedahl.
Over the past two years, HSS has been successfully pilot-tested on vessels in different ports around the world. Today, Jotun is working to establish agreements with some ports which require documentation of a clean underwater hull prior to port call. “Because HSS is a new technology, no uniform standards currently exist,” says Oftedahl. “Our relationship with our pilot partners has been enormously helpful in working through these issues.”
Fagerheim acknowledges that reducing bunker costs, meeting the increasingly strict demands of cargo owners and complying with regulations on emissions and alien invasive species are all potent drivers for owners to improve vessel efficiency and environmental performance. But by being proactive and working in collaboration with suppliers, he believes the industry can achieve better results, faster. “As we have seen with Jotun Hull Skating Solutions, a project that involved a broad range of stakeholders, collaboration can produce some game-changing technologies that get us one step closer to a more environmentally responsible industry.”
FACT BOX: Antifouling matters
In August 2019, Jotun signed an agreement with Wallenius Wilhelmsen to provide its Hull Performance Solutions (HPS) anti-fouling coating system across 42 vessels in the leading shipowner’s advanced RoRo fleet. HPS combines premium SeaQuantum X200 antifouling with technical and digital solutions to accurately measure hull performance. The antifouling works to increase vessel efficiency, cut fuel costs and reduce CO2 emissions.
Jotun’s Hull Performance Solutions encourages participating vessels to install sensors to enable performance monitoring based on standardized principles (ISO 19030) for the measurement of changes in hull and propeller performance.
“As a company we are focused on enhancing sustainability and reducing the environmental impact of our operations – maintaining clean hulls is a key enabler for that,” explains Geir Fagerheim, SVP Marine Operations, Wallenius Wilhelmsen. “On vessels where we have applied HPS, we have already seen significant, measurable reductions in speed loss over time, which saves fuel costs. We have opened a digital window onto how hull condition affects fleet-wide performance, efficiency and emissions, strengthening a culture of transparency and accountability.”
Since the launch of HPS in 2011, Jotun Marine Coatings has collected data on hull performance from different types of vessels on different trades, creating one of the industry’s most comprehensive data sets on hull performance.
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