Ships from Chile to Panama
 

Booking passage on a freight ship.
I have heard and read about people booking passage on freight ships however no company I contact has ever emailed me back.
Have any of you don't this? do you know anyone who has? Do you know any kind of ship booking website like skyscanners for flights but for ships?
I am struggling to find options here. I need passage for me and my bike on a boat from Chile to Panama in January 2016. Freight ship, cruise ship, barge I'm not fussy :)
Thanks