Portsmouth divers find WWII-era steamship sunk by German U-boat in Gulf of Maine

By: Ian Lenahan

Outlets: Portsmouth Herald

Published: October 30, 2026

Words: 576

Last Updated: 1 week, 3 days ago

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PORTSMOUTH — A Portsmouth-based dive team recently discovered the ruins of the SS Cornwallis steamship sunk by a German U-boat during World War II in the Gulf of Maine.

The Nomad Exploration Team, a nine-person civilian team, located the wreck in mid-July using side scan sonar technology. The divers plunged nearly 400 feet deep to determine the wreck detected on sonar was indeed the SS Cornwallis, a ship that departed Barbados for New Brunswick in …

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