Wattlab, a Netherlands-based developer of maritime solar technologies, has completed its first full-scale Solar Flatrack installation on Vertom’s 7,280 DWT cargo vessel MV Vertom Tula. The 79 kWp system, which consists of 44 modular solar racks, was assembled at Wattlab’s Rotterdam production facility before its deployment. Installation was completed within a single day at the Port of Harlingen using container twist lock fittings for faster setup. According to Wattlab, the system supplies around 20% of the vessel’s hotel load under normal operating conditions at sea. Independent validation by TNO has confirmed measurable CO₂ reduction potential and a defined payback period following extended pilot trials. The deployment was co-funded by the EU’s Just Transition Fund and has been shortlisted for two IBJ Awards. It also aligns with the EU ETS and FuelEU Maritime regulations aimed at decarbonizing short-sea shipping operations. Earlier this year, Wattlab had equipped HGK Shipping’s Blue Marlin vessel with its solar-powered hybrid system for propulsion, demonstrating its growing maritime adoption.