Russian President Vladimir Putin, right, walks upon his arrival to the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018. Rosneft oil giant CEO Igor Sechin is at left.

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A dock is moored at the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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A dock is moored at the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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A dock is moored at the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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Rosneft oil giant CEO Igor Sechin gestures before his speech at the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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Russian President Vladimir Putin, centre right, listens to Deputy Prime Minister Yuri Borisov during his visit to the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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A dock and cranes are pictured at the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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Russian President Vladimir Putin, right, listens to Zvezda shipyard director Sergey Tseluiko as they walk at the shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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Russian President Vladimir Putin smiles chatting with workers as he visits the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018.

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Russian President Vladimir Putin, centre, walks upon his arrival to the Zvezda shipyard in the town of Bolshoi Kamen, Russia, September 11, 2018. Others, from left, are: Presidential Aide Andrei Belousov, Zvezda shipyard director Sergey Tseluiko, Industry and Trade Minister Denis Manturov, Deputy Prime Minister Yuri Borisov and Rosneft oil giant CEO Igor Sechin.

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