Die Hollenmaschine im U-Boot

Sauer, H: 1928 Berlin, hardcover, 145 pages, with photos. A gripping story of sabotage and danger aboard a German U-boat during World War I, focusing on the challenges faced by the crew as they contend with an internal explosive device. The narrative combines technical details with intense drama, illustrating the perils of submarine warfare and the resilience of those involved. In very good condition