The tragedy occurred August 12, 2000, when the Russian nuclear submarine Kursk sank following an onboard torpedo explosion, killing all 118 crewmembers.
The Russian Navy has improved safety and rescue techniques since the sinking of the Kursk submarine, the Navy commander said.
"After the Kursk submarine disaster, the Navy has carried out extensive work to improve its rescue operations. The Navy has focused on saving crewmembers of accident-hit submarines," Admiral Vladimir Masorin said.
The Russian Navy has been hit by several accidents involving submarines in the past few years.
Apart from the Kursk tragedy, the K-159, a November class nuclear submarine with 800 kilograms (about 1,700 pounds) of spent nuclear fuel onboard, sank in 2003 while being towed to Polyarny, in northwest Russia, for decommissioning. Nine members of the 10-man crew died.
in August 2005, the Priz AS-28 mini-sub with seven submariners onboard became entangled in a fishing net at a depth of about 190 meters (about 620 feet) in the Berezovaya Bay in the Bering Sea.
A rescue mission was successfully mounted after three days with the help of the British Scorpio 45, an unmanned deepsea rescue vehicle.