Nazi Secrets (Full Episode) | Drain the Oceans

Summary by Krater

This video explores Nazi Germany's wartime secrets using modern underwater scanning technology to reveal sunken historical wrecks like the hydro-ferry Hydro, the Australian cruiser HMAS Sydney, and the aircraft carrier Graf Zeppelin.

From the video

Answers: What Nazi secrets and sunken wrecks can be found using underwater scanning technology?

• Nazi secrets in Norwegian and Baltic waters
• Underwater scanning and multibeam sonar technology
• Sinking of the hydro-ferry Hydro and heavy water plant at Vemork
• The battle between HMAS Sydney and the German raider Kormoran
• Discovery and exploration of the German aircraft carrier Graf Zeppelin
• U-boat U-480 and stealth rubber panels

What it concludes

• Scanning Lake Tinn revealed the ferry Hydro sank carrying barrels of heavy water destined for Nazi Germany's nuclear program.
• The search for HMAS Sydney proved that the Australian warship was critically damaged in a close-quarters battle by the disguised German raider Kormoran before both sank.
• Scanning the Baltic Sea located the sunken German aircraft carrier Graf Zeppelin, showing extensive damage from Soviet bombing tests in 1947.
• Underwater investigation of U-boat U-480 confirmed that it used rubber stealth panels to absorb sonar signals during World War II.