▁when ▁communication ▁with ▁Kur sk ▁was ▁lost . ▁The ▁sub marine ▁was ▁later ▁found ▁to ▁have ▁suffered ▁cat ast roph ic ▁tor ped o ▁det on ations , ▁resulting ▁in ▁the ▁loss ▁of ▁all ▁ 1 1 8 ▁crew ▁members . ▁Py otr ▁Vel iki y ▁guard ed ▁the ▁area ▁where ▁the ▁sub marine ▁s ank ▁during ▁the ▁subsequent ▁salv age ▁operation ▁in ▁ 2 0 0 1 . ▁ ▁In ▁March ▁ 2 0 0 4 , ▁Russian ▁Navy ▁Chief ▁Admir al ▁Vladimir ▁K uro yed ov ▁declared ▁Py otr ▁Vel iki y ▁un fit ▁for ▁service ▁due ▁to ▁problems ▁with ▁the ▁ship ' s ▁engineering ▁maintenance . ▁On ▁ 1 9 ▁April ▁ 2 0 0 4 , ▁the ▁cru iser ▁was ▁dock ed ▁in ▁the ▁floating ▁dry d ock ▁P D - 5 0 ▁for ▁painting ▁of ▁the ▁unders ide ▁of ▁the ▁h ull , ▁rep airs , ▁and ▁exam ination ▁of ▁the ▁ste ering ▁system . ▁The ▁rep airs ▁were ▁completed ▁later ▁that ▁year , ▁and ▁it ▁was ▁carrying ▁out ▁miss ions ▁again ▁by ▁August . ▁ ▁From ▁September ▁ 2 1 ▁to ▁October ▁ 2 2 , ▁ 2 0 0 4 ▁she ▁sa iled ▁on ▁her ▁first ▁long ▁voyage . ▁Ac company ing ▁the ▁aircraft ▁car rier ▁, ▁the ▁destroy ers ▁Admir al ▁Ch aban en ko ▁and ▁Admir al ▁U sh akov , ▁as ▁well ▁as ▁several ▁auxili ary ▁ships , ▁she ▁went ▁into ▁the ▁north - western ▁Atlantic ▁in ▁what ▁was ▁the ▁largest ▁Russian ▁naval