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Old 12-23-2020, 08:32 PM   #10
Fred Brackin
 
Join Date: Aug 2007
Default Re: GURPS O'Neill Cylinder Design

Quote:
Originally Posted by AlexanderHowl View Post
A classic O'Neill Cylinder is going to mass around 10 billion metric tons when you account for atmosphere, habitation, structure, and shielding, so it will be a SM+22 structure by mass (volume does not really matter for Spaceships).
Yes, there is no such thing as volume-based SM in Spaceships. It confuses people enough that SM in Spaceships is different from SM in Basic. I would rather not see you inventing a new kind of SM.
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