<b>Live updates: follow the latest news on </b><a href="https://www.thenationalnews.com/world/2022/02/18/russia-ukraine-latest-news/"><b>Russia-Ukraine</b></a> Russian billionaire Alisher Usmanov’s superyacht, the world’s largest by volume, has been seized by German authorities in Hamburg, according to <i>Forbes </i>business magazine. The German government has frozen <i>Dilbar</i>, Mr Usmanov’s 512-foot yacht, the publication said, citing industry sources. Built in 2016 and named after his mother, the boat is estimated to be worth $594 million, according to the Bloomberg Billionaires Index. The European Union adopted sanctions on six of Russia’s wealthiest individuals on Monday, including Mr Usmanov, who called the decision “unfair” and “defamatory.” The <i>Dilbar </i>had been undergoing refitting in the northern German city. Superyachts and other opulent displays of wealth among Russia’s elite have drawn intense scrutiny since the country’s invasion of Ukraine, even being referred to in US President Joe Biden’s State of the Union address. “We are joining with our European allies to find and seize your yachts, your luxury apartments, your private jets,” Mr Biden said during Tuesday’s address. Five other individuals were named in the latest EU sanctions: Mikhail Fridman, Petr Aven, Alexey Mordashov, Gennady Timchenko and Alexander Ponomarenko. Mr Mordashov owns two superyachts: <i>Nord</i>, which is in the Seychelles, and <i>Lady M</i>, anchored in Imperia, Italy. Russian tycoons also still have superyachts docked in Europe. Roman Abramovich’s <i>Solaris</i> is in Barcelona; Iskandar Makhmudov’s Predator is in Genoa, Italy; and Vagit Alekperov’s <i>Galactic Super Nova </i>is in Montenegro, among others, according to data tracked by Bloomberg. Mr Usmanov, 68, owns a major stake in USM, a Russian investment group with holdings in Metalloinvest, one of the world’s largest iron ore producers, and telecoms company MegaFon. He is the sixth-richest Russian with a fortune of $19.5 billion, according to Bloomberg’s wealth index, though that figure includes <i>Dilbar.</i> Russian President Vladimir Putin has also been sanctioned by US, EU and UK authorities. He has been linked by news organisations including <i>Business Insider</i> to the superyacht <i>Graceful.</i> That boat left Hamburg on February 7, about two weeks before Russia invaded Ukraine. It is now in Kaliningrad, Russia.