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For SpaceNut ... we only had two topics with submarine in the title. Neither was a good fit for this topic...
On Earth, humans have mastered the technology and psychology of life in an enclosed pressure vessel.
The achievement over many decades has reached the point that crews can remain under the surface for months at a time, although I see hints that the psychological stress does increase over such a long period.
It seems to me that a modern submarine could be relocated to Mars and used as a habitat with only one key difference. There is no envelope of water available for the submarine to use as a heat sink.
We have at least two members of this forum who can speak to the question with direct knowledge, and there may be other members who can add to the discussion.
I am inspired to offer this new topic thanks to the innovative thinking of PhotonBytes, regarding the option of enlisting the natural atmospheric pressure on Mars at depth, to eliminate the need for a pressure shell for a habitat. The elimination of the pressure shell may be a benefit that would justify investment in digging a well deep enough to gain access to the natural pressure needed for a habitat.
As a reminder, in Mars, 1/2 bar is the recommended pressure for a habitat, using the 3-5-8 rule for gas mixture.
For someone reading this post without having read anything else in the forum archive, the reason for the 3-5-8 rule is to enable residents on Mars to change to an atmosphere suit to work on the surface. The resident would breath 3 PSI of oxygen while wearing the suit.
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This post is reserved for an index to posts that may be contributed by NewMars members over time.
The theme I'm hoping we can explore with this topic is the experience humans have gained working in pressure vessels under water, as a complement to experience we have achieved to a much lesser extent in space.
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Good morning all, use of submarine style mars people life is on earth doable under a set of conditions.
1 Nuclear power.
2. Water for cooling, source for drinking or food prep, oxygen creation.
3. Dry and some fresh as well as frozen plus canned goods for mess hall food service.
4. Bunks space are common with minimal possessions.
5. Assigned work station plus schedules.
...list goes on.
It's not just about efficient space use.
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Nuclear reactor cooling is separate from other sea water uses as it's a closed loop system.
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For SpaceNut re #4
Thank you for giving this new topic a boost.
I asked Google to look for information about submarine life support systems, and it found this page ...
https://science.howstuffworks.com/trans … arine2.htm
The page itself is written at a level that I would expect a high school student would find helpful
In the context of this forum, and design of life support systems for off-Earth habitats, it seems to me this page covers the basics.
An aspect life support that this page includes is keeping the habitat warm.
A detail that caught my eye is the filters designed to deal with cigarette smoke. I would imagine this is less of an issue today, but in the decades of World War II and after, smoking was so common that it must have been tolerated on board submarines.
It's unlikely to be an issue in space, but filters for contaminants are going to be needed, without a doubt.
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