Room 40 warned that the High Seas Fleet was leaving harbour, but the German sortie was designed to pull British ships across waiting U-boat lines. Nottingham mistook the surfaced U-52 for a fishing vessel before two torpedoes knocked out all power, and a third hit 25 minutes later made the loss unavoidable. Dublin's radio report brought two destroyers after Beatty ordered assistance. They arrived roughly ten minutes before the cruiser sank and evacuated the crew, showing how intelligence, communications, and rescue could limit casualties without saving the ship.
Chapter · 26:45-28:32
How U-52's submarine line sank HMS Nottingham
A German plan drew British forces across waiting U-boat lines, where U-52 disabled Nottingham before radio reporting brought destroyers to evacuate her crew.