Container vessels Elbwave and Elbblue were for 2 weeks one by one in dry dock for 10-year class renewal. For Elbblue was made additional works: complete overhauling of steering gear and also first inspection of the installed LNG system and tank dome, which needed to be cooled down after that to -140 degree via nitrogen. As for Elbwave vessel  was also made complete overhauling of propellershaft and propeller blades of CPP. Both container vessels got installed new hotwell tanks and new coating.