[gurps] GURPS 3e Magic spell: Resist Pressure

[Bret Indrelee]

On Jan 13, 2009, at 11:30 PM, Troy Guffey wrote:
> Resist Pressure      Regular
> The subject (person, creature or object) become immune to the  
> effects of pressure and concussion.
>
> Duration: 1 minute.
> Cost:  2 to cast, 1 to maintain for up to 10atmopheres, cost doubles  
> for up to 100atm, triples to become totally immune to the effects of  
> pressure. Only the first level is necessary to be immune to  
> transient changes in pressure (such as concussion)
> Prerequisites: Any six Air spells, or 2 Air spells and Breathe Water.
>
> Items: (a)Any. Affects wearer only. Cost: 1000FP and $1,000 in  
> platinum. (b) Wand, staff or jewelry.  Cost: 1500FP and $1000 in  
> platinum
>
> *****
> modeled mostly on Resist Lightning, with the levels idea from Resist  
> Fire

The description doesn't say, does it also offer protection from lack  
of atmosphere? Do you need a separate spell to provide a breathable  
air supply, or is that assumed to be part of the spell?

Since the pressure raises by 1 atmosphere for approximately every 10  
meters / 33 feet you below the surface of water, this spell would  
allow you to withstand a depth of 330 feet at the first level and 3300  
feet at the second level. For comparison, the normal safe limit for  
non-decompression scuba diving is about 90 feet.

-Bret

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