As the largest displacement submarine ever built in human history, the Russian Navy's last typhoon nuclear submarine "Demetri Donskoy" was retired. On February 7, the US "Power" website quoted the Russian news agency TASS as saying that the Russian navy has officially retired the strategic nuclear submarine "Dmitry Donskoy". Vladimir Martsev, the head of the "All Russian Fleet Support Movement", confirmed the news and said that the submarine would be waiting for disposal with two other retired submarines of the same type. In 2022, Russian media reported the news of the decommissioning of the "Dmitry Donskoy", but TASS said that the news was incorrect at that time. American media said that as the last typhoon class nuclear submarine in active service, the fate of the "Demetri Dunskoy" has attracted much attention. The underwater displacement of this nuclear submarine is up to 48000 tons, with a total length of 172.8 meters, and it can carry 20 submarine-launched ballistic missiles. At the end of the Cold War, the Soviet Union completed six typhoon class nuclear submarines. After the end of the cold war, affected by the nuclear arms agreement signed between the United States and Russia and the lack of funds of the Russian military, five typhoon class nuclear submarines have been retired successively, while the "Demetri Dunskoy" has accepted a series of modifications and acted as a new weapon test platform. Marzev said that after the retirement of the "Dmitry Donskoy", its name will be inherited by the Russian Navy's latest type of North Wind God-A nuclear submarine. (Outlook New Era)