National Geographic
Drain the Oceans - How Killer U-Boats Battled the Royal Navy
Disney+

The video explores the evolution of naval warfare during World War I, focusing on the significant role of submarines, particularly the German U-boats, and the Allies' responses to this emerging threat. It begins with the mysterious sinking of three British cruisers, HMS Abukir, HMS Cressy, and HMS Hogue, which were attacked by U-boats, showcasing the devastating impact of torpedoes. The narrative shifts to the tragic sinking of the RMS Lusitania, which resulted in the loss of many lives, including American civilians, pushing the U.S. closer to joining the war. As U-boat attacks escalated, the British developed countermeasures, including depth charges and Q-ships, which were disguised merchant vessels armed for combat. The climax of the story highlights the successful ambush of a U-boat by the HMS Stock Force, demonstrating the effectiveness of these tactics. By the war's end, the Allies had adapted to the submarine threat, leading to significant changes in naval strategy that would influence future conflicts.