U-boat Deck guns - Technical pages - German U-boats of WWII

The U-boat War in World War Two (Kriegsmarine, 1939-1945) and World War One (Kaiserliche Marine, 1914-1918) and the Allied efforts to counter the threat. Over 40.000 pages on the officers, the boats, technology and the Allied efforts to counter the U-boat threat.

Exclusive: Wreck of fabled WWI German U-boat found off Virginia

World War I in Photos: War at Sea - The Atlantic

Why were the guns on submarines still usable after being underwater? Wouldn't the guns rust or jam being exposed to sea water? - Quora

How did the German U-boats perform in the WW 2 compared to WW 1, from a strategical point of view ? - Quora

This was the secret war off the US coast during World War II

Captured u boat hi-res stock photography and images - Alamy

Battle of the Atlantic: Archaeology of an Underwater WWII Battlefield: Mission Logs: September 4: NOAA Office of Ocean Exploration and Research

U BOATS NAZI GERMANY WORLD WARTIME SUBMARINES U BOOT UNTERSEEBOOT

Munizionamento Cannone Sommergibili Regia Marina - Tecnica - Betasom - XI Gruppo Sommergibili Atlantici