King Willem-Alexander and King Filip performed the official opening ceremony on the Z9, an electric ship. The ceremony was accompanied by a parade of patrol, tug and pilot boats. A historic moment because the New Lock housed a seagoing vessel for the first time, the M/V Bregaglia. With the departure of the 240-metre-long and 38-metre-wide ocean-going vessel towards ArcelorMittal, the New Lock was officially inaugurated.
After the official act, the royals interacted with representatives of companies using the North Sea locks, notably ArcelorMittal Belgium, Sea-Invest, Verbrugge Terminals Terneuzen, Ovet and DFDS Seaways. After the cruise, King Willem-Alexander and King Philippe visited the lock platform of the New Lock, where they were explained about the construction and operation of the lock. In the control building, they met representatives of local residents and employees of the contractor consortium responsible for the construction of the sea lock.