[Spaceships] Antimatter Plasma Torch fuelled by Water?

[ericbsmith]

Originally Posted by Figleaf23

Ah, so it's an assumption. Okay.

No, it's a reasonable reading of the rules.

Originally Posted by Figleaf23

Does that book explain what 'anti-matter boosting' consists of?

Yes. "Anti-matter boosting" (and "Anti-Matter Catalyzing") consists of mixing small amounts of Anti-Matter with Matter and ejecting the resulting plasma as reaction mass. The engine uses Anti-Matter to heat the reaction mass, and Hydrogen as reaction mass. If you have no Anti-Matter you have no heat, so you "no go." The Hydrogen is simply the reaction mass that is ejected, and can be replaced with other reaction mass giving the appropriate acceleration and deltaV modifications.