The First Submarine Had Windows—And Immediately Sank #hiddenhistory #techfail

#submarinehistory #designfails #navaltechnology #invention
In 1850, Wilhelm Bauer built a submarine with glass windows.
It sank on its first dive—because the pressure shattered them.
The crew survived, but the design was scrapped for decades.

Source: https://www.history.navy.mil/content/history/museums/nmusn/explore/collections/undersea-warfare.html