BBC Nazis, U-boats and the Battle for the Atlantic 1080p x265-MVGroup The longest campaign of World War II was fought in the Atlantic Ocean. Tens of thousands of lives were lost as Hitler's U-boat fleet hunted in packs, chasing down the Allied convoys that brought vital supplies to Britain. The port of Derry played a vital role as the United Kingdom's most westerly base, and it was here that German U-boats were taken at the end of the war to officially surrender before being scuttled off Ireland's north west coast. A specialist team of deep-sea divers are now searching for these wrecks, while historians unravel the dramatic clashes and human cost of the opening stages of this epic battle at sea. Technical Spec Video Codec: x265 CABAC Main L4 Video Bitrate: CRF 21 (~1774Kbps) Video Resolution: 1920x1080 Frame Rate: 25 FPS Audio Codec: AAC-LC (Apple) Audio Bitrate: q91 VBR 48KHz (129/215Kbps avg/peak) Audio Channels: 2 Audio Gain: 2dB Run-Time: 2 x 59 mins Number Of Parts: 1 (2 chapters) Part Size: 1.56 GB Source: WEB (1080p/h264/50 6145Kbps VBR 5.15GB) Subtitles: Merged