thebarentsobserver.com/en/industry-an…
h/t @nobit7
sputniknews.com/russia/2016121…
...but that doesn't really prove anything; it's an icebreaker after all.
marinetraffic.com/en/ais/home/sh…
They arrived from Murmansk 2018-07-29.
Specifications from her sale in 2014:
cornels-gmbh.de/downloads/Spec…
e-maksimov.livejournal.com/76620.html
(cited by @bibken, @russianforces)
The launch site for the missile test (one of four) was at 73.12° N, 53.27° E
tv21.ru/news/2018/06/1…