German U-Boats were a big threat to Allied shipping across the Atlantic. New inventions and tactics triggered a race to outsmart the opponent, dramatically changing the tides of the Battle of the Atlantic every few months. <br /><br />Join us on Patreon: <a href="https://www.patreon.com/TimeGhostHistory" target="_blank" rel="nofollow">https://www.patreon.com/TimeGhostHistory</a><br />Or join The TimeGhost Army directly at: <a href="https://timeghost.tv" target="_blank" rel="nofollow">https://timeghost.tv</a><br /><br />Check out our TimeGhost History YouTube Channel: <a href="https://www.youtube.com/c/timeghost?sub_confirmation=1" target="_blank" rel="nofollow">https://www.youtube.com/c/timeghost?sub_confirmation=1</a><br /><br />Follow WW2 day by day on Instagram @ww2_day_by_day -<a href="https://www.instagram.com/ww2_day_by_day/" target="_blank" rel="nofollow">https://www.instagram.com/ww2_day_by_day/</a><br />Like us on Facebook: <a href="https://www.facebook.com/TimeGhostHistory/" target="_blank" rel="nofollow">https://www.facebook.com/TimeGhostHistory/</a><br />Between 2 Wars: <a href="https://www.youtube.com/playlist?list=PLrG5J-K5AYAU1R-HeWSfY2D1jy_sEssNG" target="_blank" rel="nofollow">https://www.youtube.com/playlist?list=PLrG5J-K5AYAU1R-HeWSfY2D1jy_sEssNG</a><br />Source list: <a href="http://bit.ly/WW2sources" target="_blank" rel="nofollow">http://bit.ly/WW2sources</a><br /><br />Hosted by: Indy Neidell<br />Written by: Joram Appel<br />Director: Astrid Deinhard<br />Producers: Astrid Deinhard and Spartacus Olsson<br />Executive Producers: Astrid Deinhard, Indy Neidell, Spartacus Olsson, Bodo Rittenauer<br />Creative Producer: Maria Kyhle<br />Post-Production Director: Wieke Kapteijns<br />Research by: Joram Appel<br />Edited by: Miki Cackowski<br />Sound design: Marek Kamiński<br />Map animations: Eastory (<a href="https://www.youtube.com/c/eastory" target="_blank" rel="nofollow">https://www.youtube.com/c/eastory</a>)<br /><br />Colorizations by: <br /><a href="https://www.instagram.com/dememorabilia/" target="_blank" rel="nofollow">https://www.instagram.com/dememorabilia/</a><br />Julius Jääskeläinen - <a href="https://www.facebook.com/JJcolorization/" target="_blank" rel="nofollow">https://www.facebook.com/JJcolorization/</a><br /><br />Sources:<br />Pugsley, William H./Library and Archives Canada/PA-139273<br />Bundesarchiv<br />Narodowe Archiwum Cyfrowe<br />IWM CH 15219, A 31092, FL 3259<br />Bletchley Park Trust<br />from the Noun Project: Cargo Ship by Locad, explosion by Nico Tzogalis<br /><br />Soundtrack from the Epidemic Sound:<br />Johannes Bornlof - The Inspector 4<br />Reynard Seidel - Deflection<br />Johannes Bornlof - Deviation In Time<br />Hakan Eriksson - Epic Adventure Theme 3<br />Johannes Bornlof - Death And Glory 3<br />Phoenix Tail - At the Front<br /><br />Archive by Screenocean/Reuters <a href="https://www.screenocean.com" target="_blank" rel="nofollow">https://www.screenocean.com</a>.<br /><br />A TimeGhost chronological documentary produced by OnLion Entertainment GmbH.<br />...<br /><a href="https://www.youtube.com/watch?v=3dKzNZf58o4" target="_blank" rel="nofollow">https://www.youtube.com/watch?v=3dKzNZf58o4</a>