Submarines also have reduced partial pressure of oxygen, (18-19%). https://www.s... | Hacker News

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		rsofaer on Jan 4, 2024 \| parent \| context \| favorite \| on: Lower Obesity Rate During Residence at High Altitu... Submarines also have reduced partial pressure of oxygen, (18-19%). https://www.sciencedirect.com/science/article/pii/0378427489...

JumpCrisscross on Jan 4, 2024 [–]

> Submarines also have reduced partial pressure of oxygen, (18-19%)

The article defines high altitude at 1.96km, or 6,430 feet. That’s a less-than 16.5% effective oxygen atmosphere [1].

[1] https://www.higherpeak.com/altitudechart.html

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