NavyRecognition reports that the Russian Navy is building a fleet of six ice-capable underway replenishment tankers. The ships are relatively small,
“Project 23130 tanker has a displacement of 9 thousand tons. It is 130 meters long and 21 meters wide. The maximum speed is 16 knots. The autonomous navigation can last two months. The maximum range is 8 thousand nautical miles. The tanker can operate in 0.8-meter thick Arctic ice.”
But on the other hand the US Navy has nothing comparable.
The article also seems to point to a serious shortage of underway replenishment vessels in the Russian Navy.