was installed. Most of the ships were decommissioned from 1995, when their next overhaul became due. Only the newest submarine, K-44 Ryazan, had a second general overhaul and refuelling during 2005–2007, which gave it a potential service life to 2017. It underwent another overhaul in 2012 and returned to service in 2017. In 1994–2002 the submarine was rebuilt in Zvezdochka shipyard to be a special purpose submarine of Project 09786 (carrier of mini submarine) and renamed as BS-136 Orenburg. On 30 September 2008, a Russian Navy spokesman reported that Ryazan had successfully completed a 30-day transit from a base in northern Russia under the Arctic ice cap to the Rybachiy submarine base, Kamchatka Peninsula. The Navy added that Ryazan would soon be assigned to regularly patrol the Pacific Ocean. In July 2008, six Delta III boats were active, of which two were believed to be in the process of decommissioning. As part of Russia's "Thunder 2019" military exercise, Ryazan attempted to launch two R-29R ballistic missiles on 17 October 2019. However, only one did so successfully while the other remained in its launch tube. Sections of pressure hull Forward torpedo section Battery and forward habitable section Command and control section Forward missile section Rear missile section Auxiliary mechanism and rear habitable section Nuclear reactor section Forward turbine section Rear turbine section Stern section Boats See also List of submarine classes in service References External links Submarine classes Russian and Soviet navy submarine classes Soviet inventions Nuclear-powered submarines Ships built by Sevmash fr:Classe Delta#Delta III zh:德尔塔级核潜艇#德尔塔III级