https://www.engadget.com/2018/04/30/...r-power-plant/

Multiple nations, including China and the US, have pursued offshore or floating nuclear reactors, but neither will be first to christen one. Russia has launched the world's first floating nuclear power plant, the 70-megawatt Academik Lomonosov, on the Baltic Sea. Starting from St. Petersberg, it will be towed around Norway to a Russian town called Murmansk to take on nuclear fuel. From there, it will head to the Arctic to power the oil-industry town of Pevek, along with a desalination plant and drilling rigs.

Construction on the ship began way back in 2007, and it reportedly cost $232 million to build. The state-run company that owns it, Rosatom, originally planned to load the reactor with nuclear fuel at St. Petersberg, then send the ship directly to Pevek. But Greenpeace and several Baltic states mounted a successful petition, so the firm decided to load and test it in Murmansk, instead.