
SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )

SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )

SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )

SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )

SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )

SAKARYA, TURKIYE - SEPTEMBER 17: An unwater view of U20 submarine, one the three of the U-class submarines deployed to the Black Sea by Nazi Germany during World War II, during a dive conducted by teams from the Coast Guard Western Black Sea Group Command off the coast of Karasu district, Sakarya, Turkiye on September 17, 2025. The submarine was sunk by the Russians during the war, while the other three were sunk by their crews at a designated point following orders from headquarters. ( Tahsin Ceylan - Anadolu Agency )