In this handout photo released by Russian Space Agency Roscosmos, Russian warships are lined up during the Navy Day parade in the Neva river in St. Petersburg, Russia. Editorial use only, no archive, no commercial use.

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In this handout photo released by Russian Space Agency Roscosmos, Russian warships are lined up during the Navy Day parade in the bay of Sevastopol, Crimea, Russia. Editorial use only, no archive, no commercial use.

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A member of a Russian Navy band rests during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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The motor and sailing yacht Orion sails past Russian guided missile cruiser Moskva during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Ka-27PS military helicopter flies over guided missile frigate Pytlivyy during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A paratrooper parachutes with a Russian national flag during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A paratrooper parachutes with a Soviet naval flag over the Russian reconnaissance ship Ivan Hurs during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian Su-30SM fighter jets fly in formation during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian Su-30SM fighter jets fly in formation during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian Ka-52 Alligator attack helicopter flies during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Colonel General Alexander Dvornikov, the commander of the Southern Military District of the Russian Armed Forces, takes part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian anti-submarine warfare corvette Muromets fires missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Ka-27PS military helicopter flies over guided missile frigate Pytlivyy during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian anti-submarine warfare corvette Muromets fires a torpedo during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian military helicopters fly over reconnaissance ship Ivan Hurs and guided missile corvette Samum during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian Ka-52 Alligator attack helicopters fly over the Monument to Scuttled Ships during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The sailing ship Khersones takes part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian marines take part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Beriev Be-12 Chaika (Seagull) amphibious anti-submarine and maritime patrol aircraft flies during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian missile boat Naberezhnye Chelny sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian guided missile corvette Orekhovo-Zuyevo fires missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors line up on board the landing ship Novocherkassk during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian landing ship Novocherkassk fires missiles during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian base minesweeper Ivan Antonov sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian diesel attack submarine Kolpino sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian seagoing minesweeper Anatoliy Zheleznyakov sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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The Russian guided missile corvette Samum sails during the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A Russian navy honor guard takes part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A Russian navy honor guard takes part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian Navy divers take part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Performers wearing historical Navy uniforms take part in the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Colonel General Alexander Dvornikov, the commander of the Southern Military District of the Russian Armed Forces, right, takes part in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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Performers wearing historical costumes take part in the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Performers wearing historical Navy uniforms take part in the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Performers wearing historical Navy uniforms take part in the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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A Russian sailor takes in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A Russian sailor takes in the Navy Day parade in the Black Sea port of Sevastopol, Crimea, Russia.

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A member of a Russian Navy band performs during a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol to mark the Navy Day in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors attend a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors attend a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors attend a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors attend a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian sailors attend a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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A Russian sailor helps an elderly man during a wreath laying ceremony at the Memorial of Heroic Defence of Sevastopol during the Navy Day celebrations in the Black Sea port of Sevastopol, Crimea, Russia.

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Russian Navy officers and sailors line up on board a warship during the Navy Day parade at Novorossiysk naval base, Russia.

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A girl plays on a replica of historical cannon during the Navy Day celebrations at Novorossiysk naval base, Russia.

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A woman poses for a photo with men wearing sailor's caps and frocks during the Navy Day celebrations at Novorossiysk naval base, Russia.

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A woman holds a Soviet naval flag during the Navy Day celebrations at Novorossiysk naval base, Russia.

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Men wearing sailor's caps shake hands during the Navy Day celebrations at Novorossiysk naval base, Russia.

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Russian sailors march during the Navy Day parade at Novorossiysk naval base, Russia.

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A ribbon on a sailor's cap is pictured during the Navy Day parade at Novorossiysk naval base, Russia.

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Russian Navy officers march during the Navy Day parade at Novorossiysk naval base, Russia.

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Russian marines march during the Navy Day parade at Novorossiysk naval base, Russia.

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Russian sailors march during the Navy Day parade at Novorossiysk naval base, Russia.

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A Russian Navy officer marches during the Navy Day parade at Novorossiysk naval base, Russia.

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Russian marines march during the Navy Day parade at Novorossiysk naval base, Russia.

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A Russian patrol boat sails during the Navy Day parade at Novorossiysk naval base, Russia.

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Soviet naval flags flutter in front of a warship during the Navy Day parade at Novorossiysk naval base, Russia.

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A Russian sailor attends the Navy Day parade at Novorossiysk naval base, Russia.

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A dog wearing a sailor's frock carries on its back a Soviet naval flag during the Navy Day celebrations at Novorossiysk naval base, Russia.

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