Cruise & Ferry Review - Autumn/Winter 2020

8 9 Willem Barentsz is the first passenger ferry to operate fully on LNG fuel that mechanically drive efficient CR azimuth thrusters,” says Melles. “The entire aluminum hull shape, which contributes to a light and efficient design, is propelled with relatively little power and emissions. The vessels have a heat recovery system, where residual heat is partly converted into electricity to drive the bow thrusters. As a result, we saved an extra auxiliary engine and further reduced emissions.” The new vessels imply Rederij Doeksen’s firm commitment to LNG. “In our view LNG is still a very good transition fuel for the next 20-30 years,” explains Melles. “Availability, reliability and certifiability are important factors for shipowners when evaluating new fuels and technologies. LNG ticks all these boxes, which is far from being the case for a number of new technologies at this stage.” In the context of the vulnerability of the Wadden Sea, reducing harmful emissions such as particulate matter and nitrogen oxides is a particularly important step for the company. But Melles and his team still have an investment in the future. “With regard to further reducing the carbon dioxide, our strategy is to boost the production of bio-LNG in the region and, in time, to gradually replace the fossil LNG to bio-LNG,” he says. Rederij Doesksen’s sustainability strategy has taken a significant step forward with these new vessels. “In keeping with our tradition, we have stuck our necks out with these ships by thinking outside the box and taking a chance with many new innovations,” says Melles. “The urgency of sustainability is tangible and necessary, and many new technologies are under development.” Consequently, the company’s next major project is to research the sustainability of the existing and somewhat older fleet. “These are interesting times and we will not sit back when both new ships are in service,” says Melles. “We already have a fleet of ro-pax ferries and fast ferries and there is still a lot to be gained by reducing harmful and greenhouse gas emissions from these vessels. This investigation will start immediately if both Willems are in safe operation. “Special attention will be paid to making our medium-sized fast ferries (300-400 passengers) more sustainable. This category of high-performance vessels poses a major challenge with regard to sustainability because of the large power density, low weight and limited space,” concludes Melles. CFR Photo: Joachim de Ruijter