Sibir (1977 icebreaker)
Sibir, built 1977, is a retired Russian nuclear-powered icebreaker of the. She is the only icebreaker of her class that does not feature a red superstructure.
She was withdrawn from service in 1992 and was reported in 2012 as being moored at Murmansk awaiting scrapping.
She has a gross tonnage of 20,655 and a dead weight of 4,096 tonnes.
