In August 2003 the Navy also participated in the Far Eastern exercise Vostok 2003, which saw the "Slava"-class cruiser "Varyag" and the "Sovremennyy"-class destroyer "Bystryy" active, as well as an amphibious landing carried out by three Pacific Fleet Ropucha class landing ships. Warships and helicopters from the Japanese and South Korean navies also took part. The Northern Fleet followed in January 2004 when thirteen ships and seven submarines took part in exercises in the Barents Sea. The involvement of "Admiral Kuznetsov" and nuclear-powered cruiser "Pyotr Velikiy" was overshadowed however by two ballistic missile launch failures, made more embarrassing because President Vladimir Putin was afloat aboard the Typhoon-class SSBN "Arkhangelsk" to witness the tests. Neither of the "Delta IV"-class "Novomoskovsk" nor "Kareliya" were able to successfully launch what were apparently RSM-54 SLBMs. Former navy commander-in-chief Vladimir Kuroyedov's early dismissal may have resulted from these gaffes. He was replaced by Admiral Vladimir Masorin in September 2005.