Laid down by Sevmash, Severodvinsk with yard number 379 on 23 February 1981, launched as Imeni XXVI Siezda KPSS on 7 March 1984, commissioned on 28 December 1984, after modernisation renamed Verkhoturye in February 1999 and modernized 2010–2012. Of the Delta IV (Project 667BDRM Delfin) strategic nuclear missile submarines, consisting of the Verkhotury, Ekaterinburg, Podmoskovye, Tula, Bryansk, Karelia and Novomoskovsk, preceded by the Delta III and Typhoon-classes and succeeded by the Borei-class. Designed by Rubin Design Bureau in 1975. Totally7 boats built for the Northern Fleet with as home base the Sayda Guba Naval Base earlier at Olenya Bay. Similar to the preceding Delta III (Project 667BDR) using a double hull with the missiles silos situated in the inner hull. Fitted out with horizontal hydroplanes fitted on the sail. To prevent damaging when the submarine breaks through the ice is it possible the turn the hydroplanes vertically.
With a displacement of 13.500 (surfaced)-18.200 (submerged) tons and as dimensions 166 x 12,3 x 8,8 metres or 544.7 x 40.4 x 29 feet. He machinery consists of 2 pressurized water-cooled reactors and 2 steam turbines with as horsepower 59.900 shp allowing with the two screws a speed of 15,35 (surfaced)-24 (submerged) knots. The action radius is just limited by a food supply limit of 80-90 days. Crew numbers 135 men. The original armament consisted of 16 missiles and 4-53,3cm/21” bow torpedo tubes able to launch several types of torpedoes. Diving depth 320 (operational)-400 maximum) metres.
Sources
https://en.wikipedia.org/wiki/Delta-class_submarine
http://russianships.info/eng/submarines/project_667bdrm.htm
Several editions of Jane's Fighting Ships.
A.S. Pavlov. Warships of the USSR and Russia 1945-1995.
