Sea shipping bicycles and people from South Africa to Madagascar, possible?
 

Can anyone point me in the right direction for finding info on getting people and their bicycles from South Africa to Madagascar by ship?

They are looking for any way to avoid going by plane (or mega expensive cruise ship) in May this year.

It's for a nice Belgian couple we recently met in Namibia; just trying to help then out if I can. He's drawn blanks on his own searches so far.

Thanks