Hull Pressure Ratings

[Sackett]

I can't remember where I saw the reference, but I don't think it was canonical, but it was "Approvedfor Use With", but I read where starships did not need to worry about pressure due to submergence in water.
Isn't this rather erroneous. The hulls may resist the pressure at say 1,000 feet down, but how do the seals on the air-locks or cargo bay doors?
They aree designed to keep air IN, not fluids under high pressure OUT.

 

[Vargas]

Descriptions of the system defense boat from Classic Traveller say it was designed to hide in planetary oceans but, owing to the day, don't provide any hard and fast technical details.

 

[Gatsby]

Also...some ships can have fuel scoops to skim gas giants. That must be some level of pressure, gas giants being big and all.

Pressure down at 3000 feet is ~1,300 psi...normal Earth on land pressure is ~15 psi.

I am NO scientist, but just pulling mutiple gravs of acceleration would add air pressure on certain areas of the hull when in atmosphere, would it not?

Then there's armor....by Striker terms, a ship has the equivalent of 160 cm of hard steel for Armor '0'. They roughly add 120 cm per +1 armor rating. Technically is that pressurized: can water get through?

just things to consider....


What? did you watch Dr. Who and the Waters of Mars, recently?

 

[Hemdian]

For what it's worth, Adventure 12 (Secret Of The Ancients) lists on p18:

Commercial vessels (traders, merchants, liners) can withstand up to 1 ,000°K and up to 1,000 atmospheres.

Military vessels can handle temperatures to 1,500°K and pressures to 2,000 atmospheres. System defense boats are specifically constructed to handle temperatures to 2,500°K and pressures to 3,000 atmospheres.

And in this context it was about keeping stuff out.

 

[atpollard]

For what it's worth, Adventure 12 (Secret Of The Ancients) lists on p18:

"Commercial vessels (traders, merchants, liners) can withstand up to 1 ,000°K and up to 1,000 atmospheres.

Military vessels can handle temperatures to 1,500°K and pressures to 2,000 atmospheres. System defense boats are specifically constructed to handle temperatures to 2,500°K and pressures to 3,000 atmospheres."

And in this context it was about keeping stuff out.

For anyone interested, that is roughly 10,000 metric tons per square meter for a commercial hull, 20,000 metric tons for a military hull and 30,000 metric tons for a SDB. Since water has a density of 1 metric ton per cubic meter, those pressures in metric tons translate directly into meters of depth. The ocean floor is about 4200 meters deep with the deepest trenches at 11,000 meters deep.

Those hull values look off to me.
It must be that Gravitics again.

 

[aramis]

For anyone interested, that is roughly 10,000 metric tons per square meter for a commercial hull, 20,000 metric tons for a military hull and 30,000 metric tons for a SDB. Since water has a density of 1 metric ton per cubic meter, those pressures in metric tons translate directly into meters of depth. The ocean floor is about 4200 meters deep with the deepest trenches at 11,000 meters deep.

Actually, the pressure at depth results in higher density of water (otherwise subs would not be able to set a float depth), and surface seawater is SG 0.95 to 0.99 (depending upon temp and salinity), and local gravity also alters the pressure at depth.