submarine
- Thread starter Berdman
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NSDiver
Contributor
Nope. The atmosphere on a submarine is 14.7 psia, same as the surface (or kept pretty dang close). I imagine it would be a little comical though watching folks on a submarine get narced as they descend...
-Nick
-Nick
Berdman:
...there are two kinds:
> "Wet Subs" - where the interior of the sub is open to the water, & occupants exist in a "bubble" of air that pressurizes as the sub descends, & depressurizes on ascent. Thus the occupants must abide all the rules for travelling in the water column, just as a diver would.
> "Dry Subs" - where internal sub atmosphere remains at sea level pressure ( 1 ata ), & the sea is kept at bay by the reinforced steel hull, to predetermined depth limitations.
Hope that spains it for ya!
Best,
DSD
plot
Contributor
Typically there's two types, "1 ATM subs" (1 atmosphere), which are pressurized so you don't have to worry about any of the same things as divers, and the more common personal type of submarine is called an "ambient sub". Ambient sub's have the same pressure inside and outside the hull, so they have to worry about the same things as scuba divers in terms of compression and everything else. The 1 ATM subs cost alot more than ambient subs, and can typically go deeper.
If you're looking at a personal sub, you'll run into these. Any military/commercial sub is a 1 ATM sub.
If you're looking at a personal sub, you'll run into these. Any military/commercial sub is a 1 ATM sub.
plot:
....I think were saying the same thing Mr. Plot, save for the idea that 1ata subs are "pressurized", which is not the case. Dry subs remain at atmospheric pressure. O2 is replenished as needed & Co2 is scrubbed out. The hull design is sufficent to hold back the ambient water pressure to the sub's rated maximum depth capability.
Just to be clear.
Best,
DSD
yup, Navy submarines are essentially 1ata. of course there are some variations in that pressure but not signifacant, you would be surprised how quickly the pressure goes up when the A/C goes out.
meesier42:
...I spent many hours in sat. when the environmental control unit was on the fritz....the humidity! Skin disorders! They don't pay me enuff for this!
Ah well, just a memory now...
DSD
1_T_Submariner
Contributor
Imagine the Deco if a nuke sub was not 1 atm. I have spent 64 days (at one time) at greater than recreational limts. Yes they maintain 1 atm Scrub the CO/CO2 and extract O2 from water.
plot
Contributor
DeepSeaDan:
Yes, we're basically saying the same thing. Thanks for correcting my definition of a 1ATA sub.
You can get/build ambient dry subs though.
plot
Contributor
1_T_Submariner:
Imagine the narc'd out sailors launching torpedo's at sperm whales...
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