Why Russia Built a Floating Nuclear Power Plant

Instead of nuclear power icebreakers, why not redistribute the heat in hot water pipes so you can melt through the ice like a hot knife 🔪 in butter.. 
This would save tons of energy and cost of wear and tear on the ships hulls along with opening the pathway for other ships much longer as your not leaving behind a bunch of broken ice chunks to fuse freeze back together or damage when traveling at faster speeds.
Not to mention, a much more efficient cooling system if you have a network super hot reactor spread out to cool..
This save so much on the environment, so many ships have to make Trip's all the way down to the Panama canal.. to go back north again..
There should always be a shipping lane in the arctic..
Better yet, use these nuclear floating plants as electrical refueling stations for electrical cargo ships in the Arctic..