Uploaded April 2026 | Updated September 2026, 3 weeks ago
In July 1969, a dangerous NASA experiment was launched that has remained a virtual secret – until now. Six heroic men were sealed inside a tiny deep-sea capsule and set adrift. Their mission: to survive for 30 days exploring the deep, uncharted depths of the Gulf Stream. World renowned marine archaeologist, James Delgado, reveals the story of the astounding PX-15 submarine by recovering the wreck and reuniting the surviving crew.
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In July 1969, a dangerous NASA experiment was launched that has remained a virtual secret – until now. Six heroic men were sealed inside a tiny deep-sea capsule and set adrift. Their mission: to survive for 30 days exploring the deep, uncharted depths of the Gulf Stream. World renowned marine archaeologist, James Delgado, reveals the story of the astounding PX-15 submarine by recovering the wreck and reuniting the surviving crew.
You can now become a History Hit member right here on YouTube! Join for access to a new exclusive documentary every week, and access to over 160+ of our documentaries presented by world renowned historians like Dan Snow, Eleanor Janega, Tristan Hughes, Mary Beard, Matt Lewis and more.
Get an exclusive release every week by signing up here: bit.ly/4pyExyn
This channel is part of the History Hit Network. Any queries, please contact owned-enquiries@littledotstudios.com
