Not black water, no. It's vacuum-- nothing fills it, not even air. All of the ships are sealed to keep their own atmosphere from escaping. The engines burn as hot as a star, to power the ships, whether or not they use gate space.

[She can explain that much, though for the 'why's of it she might have to refer Relm to someone more qualified. For now, though, she nods and takes Relm's hand between both of hers, ready to start the next step of the painting. Her grip is soft on Hawke's wrist as she leans over her hand once again.]