Deutsches Museum on X: "111 years ago the U1, Germany's first military submarine, was taken into service. It was mainly used in exercises. Read more about the ship's history and how it
Ein begehbahres U-boot : image de Deutsches Marinemuseum Wilhelmshaven - Tripadvisor
U-BOOT WILHELM BAUER (Bremerhaven): Ce qu'il faut savoir pour votre visite (avec photos)