The Petrie Ironman diving suit, invented by Captain Enos B. Petrie of Brooklyn, was a revolutionary advancement in deep-sea exploration during the early 20th century between 1902 and 1907. It marked a significant breakthrough in diving technology, allowing divers to operate at unprecedented depths with greater safety and efficiency. The suit, composed of aluminum alloy and weighing 450 pounds, was designed to maintain surface-level pressure, enabling the diver to avoid decompression sickness, also known as “the bends.” This innovation was a response to the limitations of traditional rubber diving suits with metal helmets, which were only effective at shallower depths and often left divers exhausted.
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