Can I take the Cruise Ship from Yangshuo to Guilin?

I am coming from another province and would like to start off at YS. I want to take the ferry from YS to Guilin, as I have a flight to catch in Guilin Airport. It wouldn't make sense to start at Guilin, down to YS and back to take a big round. All the ships only say Guilin to YS. Anyone has any idea if it goes the other way instead?