BERLIN (Reuters) – German authorities have seized a nearly $600 million luxury yacht owned by Russian billionaire Alisher Usmanov who has faced European Union sanctions over Russia’s invasion of Ukraine, Forbes reported, citing sources in the yacht industry. The 512-foot yacht, Dilbar, was taken in the northern port of Hamburg, the Forbes website reported. The yacht had been undergoing a refit in shipyards of Blohm + Voss, Forbes reported, adding that the German government had frozen the asset and employees working on the ship did not appear for work on Wednesday. No one at Germany’s General C…