Re: Ship atmospheres and canon material

> I think this is going to become a arbitrary question in the end. I don't
> seem to recall any spesific mention on any of this just the implications.
> it is mentioned that ships can replenish on air worlds. from the way it
was
> described just entering the atmosphere of a planet would cause the air to
> replenish on a ship. but if this was the case how does the examples in the
> novels, of there are two apperantly( the one i mentioned and the one
> mentioned below), occur.

As far as I understood it as soon as a ship enters another air envelope
(ship or planet) the airs mixed...end of story. The examples given from the
novels are simply artistic license!

> does the helmsman have control as to weather the
> air envelope mix or not. maybe the air envelope and the gravity are
> independent of each other when it comes to this particular matter. IIRC
> double deck ships cannot enter an atmosphere for they would lose the
> bi-level gravity as soon as they did.

Air envelopes and gravity cannot be independant of each other. Without a
gravity field the ship cannot physically hold it's own air envelope. The
ship's own gravity plane collapses as soon as the ship enters the gravity
plane or field of a more massive object such as a planet....woe betide any
captain who tries to land on a planet with gravity but no atmosphere!

> If I have an aquatic race (or amphibian that has the ability to
> breathe
> water in whatever way) and they use a ship that has a water envelope
> rather than an air one, is this possible?  If so (even if using a
> different type of helm) how long does their air supply last since
> they
> actually has a lesser volume of air (as it's suspended in the water)?
>
> And to add to my own question (having hit snet too soon)...
>
> Does the water envelope then cary and air envelope with it that's even
larger?

I can see no reason why a ship could not have a water envelope rather than
an air envelope. From my discussion above the only way this could happen is
if the ship originates from a water world where there is no atmosphere and
the water extends to the edge of the planets gravity field, so that as the
ship leaves the planet it takes water with it rather than air.

If the DM rules that the ship has a water envelope instead of an air
envelope then there cannot be an additional air envelope around the
water...otherwise that would indicate an extra large gravity field and
consequently the water 'bubble' would collapse. Most aquatic races' ships,
however, would only carry water in the body of the vessel  so the crew would
work under water (e.g. Lizardman converted Wasps).

Anyone agree or disagree?

Jeff