How these Navy submariners worked to save themselves after their sub sank
A US Navy submarine sank in 1920 after a critical mistake during a dive. The crew's situation grew dire due to a lack of oxygen and toxic gas. The submarine's commander made a key decision that partially lifted the vessel off the ocean floor.
This move gave the crew a glimmer of hope for rescue. Further details about the incident and the crew's survival efforts are available from the US Naval Institute, which published an article about the event in 2020.