Find Ajact.
Logically, Ajact is the most important asset you could have, given that Pnimm seems uninterested in helping with this. Her Wind abilities should allow her to power and steer the ship much more quickly than you can, especially since you just asked the other eight people on the good ship QSM and none of them know how to sail either.
The only thing is, you're certain she must have fought the rainbow shade on Prospit or the Dark Planet--all the context clues point that way--but Prospit is currently in smithereens, the Dark Planet is experiencing a catastrophic geological event, and nobody in the vicinity could possibly be alive. If Ajact escaped, she must have returned to her own planet.