A UC-97 German submarine from WWI remains at the bottom of Lake Michigan to this day

Photo Credits: unknown US seaman / National Archives and Records Administration / Wikimedia Commons / Public Domain (contrast, saturation and sharpness increased in Canva).
Photo Credits: unknown US seaman / National Archives and Records Administration / Wikimedia Commons / Public Domain (contrast, saturation and sharpness increased in Canva).

At the bottom of Lake Michigan lies a 185-foot German U-boat, an unusual find considering no German submarines patrolled the Great Lakes during either World War. So, how did a U-boat end up so far from the battlefields of Europe? The story of how this submarine made its way from the Atlantic Ocean to the heart of America is one of the most intriguing and surprising chapters from the aftermath of World War I.

German U-boats after WWI

British sailors standing on a captured German U-boat.
British sailors on the deck of a U-Boat. (Photo Credits: Bettmann / Getty Images).

It was 1919, and WWI had ended in November of the previous year. After four vicious years of war, Europe was finally on the path to recovery. When the Armistice was signed, Germany was instructed to hand over its ships to the British. This was the start of a process that would lead to the dissection of Germany, military and financially. The Treaty of Versailles forced Germany to disarm and pay huge amounts in reparations for damage caused during the war.

Instead of handing their ships over, Germany broke the agreed terms of the Armistice and scuttled most of them. However, their U-boats managed to escape this fate and ended up in the hands of the British. Germany had been the technological leader of submarine warfare and design up until that point, so these U-boats were valuable pieces of equipment.

The US saw U-boats as a way to fix some of their wartime debt 

A German U-Boat on display in New York.
German U-Boat, The SM UC-5, a German Type UC I minelayer submarine (U-boat) brought to New York City and renamed U-Buy-a-Bond. (Photo credits: Heritage Art / Heritage Images / Getty Images).

After World War I, the British seized control of 176 German U-boats and distributed many of them to Allied nations for research purposes. However, there was one key stipulation: once these submarines were no longer needed, they had to be sunk in deep waters to prevent anyone from recovering them.

The United States wasn’t particularly keen on keeping the U-boats. U.S. military officials felt their own submarines were superior and considered the captured technology to be of little value. There were even discussions about banning submarines altogether, following Britain’s push for such a measure after witnessing the devastation caused by subs during the war.

However, some individuals saw a potential opportunity. With the U.S. facing a significant national debt, a creative proposal emerged: why not take the captured U-boats on a tour across American ports? By charging admission, the U.S. could raise money to help pay off government bonds and reduce the war debt.

UC-97

UC-97
Aerial view of German submarine UC-97 at Toronto, Ontario, Canada. (Photo Credit: Canadian Post Card Company / Canadian Navy Heritage website. Image Negative Number PA-030314 / Wikimedia Commons / Public Domain).

UC-97 was one of six submarines brought to the U.S. from Europe. It was a Type UC III submarine, a smaller class of minelaying U-boats built toward the end of World War I. These submarines were equipped with six mine-laying tubes, three torpedo tubes, and a deck gun.

Originally, more than 100 Type UC III U-boats were planned, but the war ended before most could be built, and only 25 were completed. UC-97 was one of them. When it arrived in the U.S., the public was told it had sunk seven ships. However, this wasn’t true—UC-97 never saw combat. The claim was made up to make the submarine seem more impressive.

UC-97 toured the Great Lakes

The German U Boat UC 97.
UC 97 after being captured. (Photo Credits: Garitan / Le Pays de France N° 242 / Wikimedia Commons CC BY-SA 3.0).

She spent much of this time in New York City, attracting thousands of visitors wherever it went. Once she had served her use making money, the submarine began more tours as part of a recruitment drive.

She toured the Great Lakes visiting places like Milwaukee and Chicago, and once again pulled in huge crowds, attracting so many people that ports often struggled to cope with them. After her tour was over, she was completely stripped of anything even remotely useful and moored up on the Chicago River.

The empty hull sat there until 1921. In June of that year, UC-97, lacking engines for propulsion, was towed out into Lake Michigan to fulfill the original agreement of sinking it once it was no longer useful.

The sinking of UC-97

U-Boat UC 5
Captured U-Boat UC 5. (Photo Credits: The Print Collector / Heritage Images / Getty Images).

UC-97 was to be used as a floating target for the gunboat USS Wilmette in a highly publicized event. She was hit by a number of 4-inch rounds before quickly sinking to the bottom of the lake, to be forgotten for much of the century.

Attempts to locate the vessel in the 1960s and 1970s were thwarted by a clear lack of information about the submarine’s final moments. In 1992, UC-97 was finally discovered by A and T Recovery. Her location is not available to the public, but A and T Recovery have visited her multiple times since the discovery.

Jesse Beckett

Jesse is a U.K.-based writer for Tank Roar, passionate about military history and storytelling through digital content. With a special focus on tanks and ships, Jesse brings a deep enthusiasm for historical narratives to every piece.