A self-funded team of volunteer technical divers has finally located the remains of the SS Cornwallis, an unlucky 5,458-ton World War II merchant steamer that was torpedoed by a German U-boat over 80 years ago. After a grueling seven-year search spanning more than 50 square miles of the North Atlantic seafloor, the Nomad Exploration Team pinned down the 400-foot-long vessel sitting roughly 400 feet underwater near Mount Desert Rock off the coast of Maine. The discovery sheds new light on a largely forgotten wartime tragedy that saw the loss of 43 crew members when the Canadian-operated ship went down in less than 10 minutes on December 3, 1944.
Key takeaways
- The SS Cornwallis was sunk by German submarine U-1230 just days after the sub dropped off Nazi spies in Maine.
- The Nomad Exploration Team spent seven years surveying over 50 square miles of seafloor before finding the wreck.
- Freezing waters, 10-knot currents, and volatile weather made the search exceptionally difficult for the divers.
- Out of 48 people onboard during the final torpedo strike, 43 lost their lives.
The treacherous search for a lost steamer
Locating the final resting place of the Cornwallis required immense persistence against some of the most punishing marine environments on the East Coast. Diver Danny Allan detailed the extreme conditions in a video update, pointing to freezing bottom temperatures that barely reached 42 degrees Fahrenheit. Furthermore, the search area sat just outside the Bay of Fundy, where massive tidal pulls create currents running at roughly 10 knots alongside rapidly shifting weather patterns.
The Nomad Exploration Team narrowed their targets to three regions using archival research before deploying side-scan sonar across more than 50 square miles of seabed. Even after capturing sonar imagery of the target, the team had to meticulously compare the submerged vessel against historical blueprints to definitively confirm it was the long-lost merchant steamer. Team member Jeff Goodreau described the location as the absolute worst-case scenario for technical diving due to the depth, cold, and heavy currents.
A fateful connection to Operation Elster
The tragic sinking of the Cornwallis was directly tied to a brazen intelligence operation orchestrated by Nazi Germany on American soil. Just days before striking the merchant vessel, the German submarine U-1230 had covertly landed two Nazi spies approximately 20 miles north in Frenchman Bay, near Hancock, Maine. That infiltration was the centerpiece of a two-year intelligence-gathering initiative known as Operation Elster, which aimed to spy on U.S. military shipyards and manufacturing hubs.
When the Cornwallis was struck on December 3, 1944, it was carrying a routine cargo of sugar and molasses from Barbados. The ship had previously survived another torpedo strike near Barbados in September 1942 before being repaired and sent back into service. On its final voyage, the vessel carried 48 people, including seven guards stationed to operate machine guns. Only five individuals managed to escape safely to shore, leaving behind 43 victims whose final resting place remained unknown for eight decades.
Future exploration and closure
With the shipwreck finally identified, the Nomad Exploration Team hopes the discovery brings closure to the descendants of the crew members who perished. Allan emphasized that the find brings renewed attention to a forgotten piece of wartime history. Having completed their hazardous deep-water dives, the team now plans to use a remotely operated underwater vehicle to study the wreck from the safety of the surface.
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