"The world's first floating nuclear reactor"

From The Daily Mail:

The world's first floating nuclear reactor dubbed 'Chernobyl on ice' has arrived at its permanent location in the Arctic after a perilous sea voyage of almost 3,000 miles.

The Russian-made power station is due to start providing power to the most northerly settlement in Asia by December.

Named the Akademik Lomonosov, the 472ft vessel carries two 35-megawatt nuclear reactors, and has been under construction since 2006.

The world's first?

Have they not heard of nuclear submarines or nuclear-powered aircraft carriers, all of which float? Admittedly, Russian nuclear submarines are better at catastrophically failing and then sinking than they are at floating, but I don't think that's what they meant.