U-23 Uboat Submarine Wreck

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A Nazi U-Boat Sank the First US Warship of WWII on Halloween 1941

U-23 Uboat Submarine Wreck

German submarine u 15 hi-res stock photography and images - Alamy

German World War I submarine discovered intact with 23 bodies inside

Wreck of submarine sunk on Christmas Day 1917 – now protected – Prosiect Llongau-U 1914-18

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The history of submarine warfare off the Jersey coast - WHYY

WWI German submarine found off Belgian coast with 23 bodies inside

The story of the lost U Boats of the Black Sea: Scuba diving at an intact nazi U Boat wreck –

German First World War submarine wreck discovered with 23 crewmen still on board