Subsector Map Creation Question

[siefertma2]

I'm putting together a subsector map and I was wondering if I used the "no water present" symbol for a system if the UWP if and only if the world hydrographics digit is 0, or is there a limit?

 

[daryen]

From what I can tell, a world is shown as "no water" if its hydrographics is 0, or if its atmosphere is A+ (indicating fluid seas). (Not counting the numerous mistakes.)

Do note that the atmosphere check should only be for A-C, not A+, but none of the official data (except for 1248) does that check correctly.

 

[Malenfant]

But is it saying "no water", or "no hydrogen source to fuel from"? Fluid seas usually contain hydrogen (liquid CH4, NH3, HCl, whatever) after all.

 

[siefertma2]

I had a chance to to look over a few other sector maps and I see how it works: "No water" means NO WATER, everything else counts as a water world.

 

[daryen]

Yes, no water means no water.

Do note, that most maps have several mistakes. For example, both the classic 1105 and 1110 maps of the Spinward Marches has several mistakes on them.