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U-68 Kapitän zur See - Karl-Friedrich Merten
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:focal(802x448:803x449)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer/36/c0/36c09da4-8090-40b1-b44e-8194f4f83835/high_reslolution_survey_of__the_german_wwi_u-boat_uc-47_credit_tolmount_development_2_.jpg "Wreck of U-Boat Sunk Off English Coast During WWI Explored for the First Time | Smart News| Smithsonian Magazine")