Russian armoured personnel carriers submerge from amphibious assault ships during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

People watch as Russian warships fire missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Russia's President Vladimir Putin and Defence Minister Sergei Shoigu inspect warships before the Navy Day parade in Saint Petersburg, Russia July 26 ,2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

A security service officer aims his sniper rifle securing the area ahead of the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Dmitri Lovetsky/Pool via REUTERS

Russia's President Vladimir Putin, Defence Minister Sergei Shoigu and Commander-in-Chief of the Russian Navy Nikolai Yevmenov attend the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

The Russian Navy's improved kilo-class submarine Kolpino sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Crew members are seen onboard the Russian submarine K-211 Petropavlovsk-Kamchatskiy during the Navy Day parade in Kronstadt near Saint Petersburg, Russia July 26, 2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

Russian warships sail along the Neva River during the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Dmitri Lovetsky/Pool via REUTERS

A Russian marine and a medical worker help a comrade not to fall prior the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Dmitri Lovetsky/Pool via REUTERS

The Russian small anti-submarine ship Aleksin fires missiles during the Navy Day parade in Baltiysk, Kaliningrad region, Russia July 26, 2020.

A couple attends the Navy Day celebrations in the far eastern city of Vladivostok, Russia July 26, 2020.

People in boats watch as a Russian armoured personnel carrier sails after submerging from an amphibious assault ship during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

The sailing ship Khersones and the Russian Navy's guided missile cruiser Atlant take part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Russian anti-submarine corvette Muromets fires missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Russian warships sail during the Navy Day parade in Kronstadt near Saint Petersburg, Russia July 26, 2020.

A Russian warship fires missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Members of a military band perform during the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

Russia's President Vladimir Putin, Defence Minister Sergei Shoigu, Commander-in-Chief of the Russian Navy Nikolai Yevmenov and Commander of the Western Military District of Russian Armed Forces Alexander Zhuravlyov attend the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

Russian armoured personnel carriers submerge from amphibious assault ships during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

Su-25 jet fighters release smoke in the colours of the Russian state flag during the Navy Day parade in Saint Petersburg, Russia July 26, 2020. Dmitri Lovetsky/Pool via REUTERS

Russian sailors line up onboard the Chuvashia missile boat during the Navy Day parade in Kronstadt near Saint Petersburg, Russia July 26, 2020. Sputnik/Alexei Druzhinin/Kremlin via REUTERS

The Russian Navy's large landing ship Caesar Kunikov sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.

People watch the Navy Day parade in the Black Sea port of Sevastopol, Crimea July 26, 2020.