Name the country which launched the world's first floating nuclear reactor with a capacity of 35 megawatts.

Russia launched the world's first floating nuclear reactor. The vessel weighs 21,000 tons and has two reactors with a capacity of 35 megawatts each. This reactor loaded with nuclear fuel, the Akademik Lomonosov left the Arctic port of Murmansk to begin its 5,000 kilometres (3,000-mile) voyage to Pevek in northeastern Siberia.