Fiji's Supreme Court lifted a stay order which had prevented the U.S. from seizing the superyacht Amadea.
A US Justice Department's Taskforce has focused on seizing yachts and other luxury assets of Russian oligarchs in a bid to pressure Russian President Vladimir Putin over the war in Ukraine.
The 106m Amadea arrived in Fiji on 13 April after an 18-day voyage from Mexico.
It was seized by Fiji authorities after the country's High Court granted a US warrant last month that linked the yacht to sanctioned Russian oligarch Suleiman Kerimov.