How Killer U-Boats Battled the Royal Navy (Full Episode) | Drain the Oceans

Draining the oceans reveals the story of the U-Boats as they took on the Royal Navy, sinking 12 million tons of ships and nearly winning the war. Enjoy a free trial of National Geographic right here: ➡ Subscribe: ➡ Get more Nat Geo Full Episodes: ➡ Get more Nat Geo Wild Full Episodes: And check out more National Geographic series and specials here: ➡ Disney Plus: ➡ Hulu: ➡ NGTV app: ➡ ABC app: #FullEpisode #DrainTheOceans #NationalGeographic Get More National Geographic: Official Site: Facebook: Twitter: Instagram: TikTok: @natgeo Tenor: About National Geographic: National Geographic is the world's premium destination for science, exploration, and adventure. Through their world-class scientists, photographers, journalists, and filmmakers, Nat Geo gets you closer to the stories that matter and past the edge of what's possible. How Killer U-Boats Battled the Royal Navy (Full Episode) | Drain the Oceans National Geographic