Ok there are possible spoilers so read with caution.

This is my situation.

I got the airship for the second time.

So I took the opportunity to get Mog's Water Rondo Dance.

So I dropped the Airship off in the Veldt and jumped into the water.

It took me to that city(forgot what it was called). This is the stupid part:

I stupidly took the ship back to South Figaro... and now I have no way getting back to my airship... Is their anyway getting back over there?
can you take the rapids back? If so how?

Thank You so much.