In 1941, the Nazis took over the Greek naval base on Salamis for their U-boat submarines from which to harry Allied supply lines to North Africa. In March, 1942 U-133 sailed from the base never to return. Ross J Robertson and Dimitri Galon delve into the history of the U-boat wreck that lies in the depths near the island. The main image shows Because of oxidation over time, gaps have been created in the casing. Thus, the metal supports between the casing and the pressure hull are revealed. (Photo: Archive of Dimitri Galon). The image on the top right shows U-133 in the Saronic Gulf, during its arrival at the 23rd Submarine Flotilla Naval Base on the island of Salamis, Greece. (Photo: The U-Boot Museum Cuxhaven). The image on the top left is of the insignia of the U-Boot-Kriegsabzeichen similar to what the divers saw in the underwater wreck of the U-133. A prerequisite for its acquisition was participation in two combat patrols. (Archive of Dimitri Galon)