In ww1, the Germans decimate the British supply lines with their submarine fleet. Other countries quickly understood the importance of such vessels and how the naval doctrine was forever changed ...

Outnumbered and outgunned, the crew of the U.S.S. Johnston fought overwhelming odds before their ship sank more than 21,000 ...

Now, eight decades later, the vessel — the only intact German submarine that was captured by US forces during World War II and salvaged — is open to the public at the Griffin Museum of Science ...

By the war’s end, 28 submarines had been built in Manitowoc, each destined for dangerous missions thousands of miles away.