The pipe-laying vessel Fortuna, which may be used to complete the construction of the Nord Stream 2 Baltic Sea gas pipeline, makes its way to Wismar, Germany, September 30, 2020. Picture taken September 30, 2020. REUTERS/Oliver Denzer

The landfall facility of the Baltic Sea pipeline Nord Stream 2 is pictured in Lubmin, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

The landfall facility of the Baltic Sea pipeline Nord Stream 2 is pictured in Lubmin, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

The landfall facility of the Baltic Sea pipeline Nord Stream 2 is pictured in Lubmin, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

The two onshore pipe exits of the Baltic Sea pipeline Nord Stream 2 are pictured at the landfall facility in Lubmin, Germany, September 10, 2020. Picture taken with a drone. REUTERS/Hannibal Hanschke

The Russian pipe-laying vessel Akademik Cherskiy, which may be used to complete the construction of the Nord Stream 2 Baltic Sea gas pipeline, lies in the port of Mukran, in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

The Russian pipe-laying vessel Akademik Cherskiy, which may be used to complete the construction of the Nord Stream 2 Baltic Sea gas pipeline, lies in the port of Mukran, in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. Picture taken with a drone. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. Picture taken with a drone. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. Picture taken with a drone. REUTERS/Hannibal Hanschke

Pipes for the Nord Stream 2 Baltic Sea pipeline are stored on a site at the port of Mukran in Sassnitz, Germany, September 10, 2020. Picture taken with a drone. REUTERS/Hannibal Hanschke

People enjoy bathing in the Baltic Sea, while the spread of the coronavirus disease (COVID-19) continues, in the Warnemuende seaside resort, near Rostock, Germany August 12, 2020. REUTERS/Annegret Hilse

People enjoy bathing in the Baltic Sea, while the spread of the coronavirus disease (COVID-19) continues, in the Warnemuende seaside resort, near Rostock, Germany August 12, 2020. REUTERS/Annegret Hilse

People enjoy bathing in the Baltic Sea, while the spread of the coronavirus disease (COVID-19) continues, in the Warnemuende seaside resort, near Rostock, Germany August 12, 2020. REUTERS/Annegret Hilse

Russian marines take part in the Ocean Shield 2020 naval exercise at the Khmelevka firing ground on the Baltic Sea coast in Kaliningrad Region, Russia August 3, 2020. REUTERS/Vitaly Nevar

Russian marines disembark from a Kamov Ka-27PS military helicopter during the Ocean Shield 2020 naval exercise at the Khmelevka firing ground on the Baltic Sea coast in Kaliningrad Region, Russia August 3, 2020. REUTERS/Vitaly Nevar TPX IMAGES OF THE DAY

Roofed wicker beach chairs are pictured in the early morning hours at an almost empty beach of the Baltic Sea in Glowe on Ruegen Island, Germany, July 14, 2020. REUTERS/Thomas Seythal

Roofed wicker beach chairs are pictured in the early morning hours at an almost empty beach of the Baltic Sea in Glowe on Ruegen Island, Germany, July 14, 2020. REUTERS/Thomas Seythal

Russian marines take part in the "Seaborne assault 2020" all-army contest at the Khmelevka firing ground on the Baltic Sea coast in Kaliningrad Region, Russia July 3, 2020. REUTERS/Vitaly Nevar

A Russian marine takes part in the "Seaborne assault 2020" all-army contest at the Khmelevka firing ground on the Baltic Sea coast in Kaliningrad Region, Russia July 3, 2020. REUTERS/Vitaly Nevar TPX IMAGES OF THE DAY

Russian marines take part in the "Seaborne assault 2020" all-army contest at the Khmelevka firing ground on the Baltic Sea coast in Kaliningrad Region, Russia July 3, 2020. REUTERS/Vitaly Nevar

People watch the sunset at the Baltic Sea, amid the coronavirus disease (COVID-19) outbreak in Heiligendamm, Germany, May 30, 2020. Picture taken May 30, 2020. REUTERS/Fabrizio Bensch

People watch the sunset at the Baltic Sea, amid the coronavirus disease (COVID-19) outbreak in Heiligendamm, Germany, May 30, 2020. Picture taken May 30, 2020. REUTERS/Fabrizio Bensch

Pipe-laying vessel Akademik Cherskiy owned by Gazprom (L), which Russia may use to complete construction of the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to complete construction of the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to complete construction of the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar TPX IMAGES OF THE DAY

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to complete construction of the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to finish the Nord Stream 2 gas pipeline, is seen in a bay as Russian Navy's corvette Boikiy sails in the foreground, near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to finish the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

Pipe-laying vessel Akademik Cherskiy owned by Gazprom, which Russia may use to finish the Nord Stream 2 gas pipeline, is seen in a bay near the Baltic Sea port of Baltiysk, Kaliningrad region, Russia May 3, 2020. REUTERS/Vitaly Nevar

People enjoy sunbathing at the beach, during the spread of the coronavirus disease (COVID-19), at Travemuende at the Baltic Sea, Germany April 11, 2020. REUTERS/Fabian Bimmer

Beach chairs are pictured at a beach at Travemuende at the Baltic Sea, Germany April 11, 2020. REUTERS/Fabian Bimmer

A general view of the beach of Timmendorfer Strand at the Baltic Sea, after Germany's state of Schleswig-Holstein has closed its borders for tourists, during the spread of the coronavirus disease (COVID-19) in Timmendorfer Strand, Germany April 11, 2020. REUTERS/Fabian Bimmer

A general view of the beach of Timmendorfer Strand at the Baltic Sea, after Germany's state of Schleswig-Holstein has closed its borders for tourists, during the spread of the coronavirus disease (COVID-19) in Timmendorfer Strand, Germany April 11, 2020. REUTERS/Fabian Bimmer

A general view of the beach of Timmendorfer Strand at the Baltic Sea, after Germany's state of Schleswig-Holstein has closed its borders for tourists, during the spread of the coronavirus disease (COVID-19) in Timmendorfer Strand, Germany April 11, 2020. REUTERS/Fabian Bimmer

A man walks along the beach in the early morning in Sopot, Poland, January 14, 2020. REUTERS/Kevin Coombs

Winter swimmers leave the water after a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers dance in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

A man poses for a photo during a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers leave the water after a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

A woman runs in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

A woman smiles before taking a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers warm up before taking a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers with hats take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Winter swimmers take a dip in the Baltic Sea during the traditional New Year swimming in Kuehlungsborn, Germany, January 1, 2020. REUTERS/Annegret Hilse

Cargo ship "Mikhail Dudin", according to Greenpeace carrying nuclear waste from Germany to Russia, is seen in the Gulf of Finland in the Baltic Sea, Russia November 26, 2019. REUTERS/Anton Vaganov

Cargo ship "Mikhail Dudin", according to Greenpeace carrying nuclear waste from Germany to Russia, is seen in the Gulf of Finland in the Baltic Sea, Russia November 26, 2019. REUTERS/Anton Vaganov

People attend a ceremony to mark the 25th anniversary of a maritime disaster when MS Estonia, carrying 803 passengers and 186 crew, sank in the Baltic Sea, in Tallinn, Estonia September 28, 2019. REUTERS/Ints Kalnins

A woman lights a candle during the ceremony to mark the 25th anniversary of a maritime disaster when MS Estonia, carrying 803 passengers and 186 crew, sank in the Baltic Sea, in Tallinn, Estonia September 28, 2019. REUTERS/Ints Kalnins