Submarines of the Project 667BDR/Delta III class are fairly old - most of them began their service in the 1970s. Nevertheless, the subs seem to be operational - two submarines conducted successful launches of their missiles in October 2009. Still, the START numbers indicated that one of the subs has been in the decommissioning process for some time - it had some missiles unloaded. Now it is reported that the oldest submarine of the Project 667BDR class - K-506 Zelenograd, built in 1975 - has indeed been removed from service and will be dismantled. Last time the K-506 submarine launched a missile was in October 2008. It was based in Vilyuchinsk.