D-Day: How a British Oceanographer's Invention Decided Normandy's Fate

Deciding when to storm the beach at Normandy was no easy feat, as the slightest variation in the tides could spell disaster for incoming boats. With a machine built by oceanographer Arthur Doodson, however, the British were able to predict the tides on Normandy's shores, thus deciding when D-Day would occur.

Deciding when to storm the beach at Normandy was no easy feat, as the slightest variation in the tides could spell disaster for incoming boats. With a machine built by oceanographer Arthur Doodson, however, the British were able to predict the tides on Normandy's shores, thus deciding when D-Day would occur.