Is there a way to line these up so you can get back to your starting destination fairly easily? If we could line them up back to back I'd love to do this for like 6 months, I think.
I'm the creator of this site... I tried some algorithms to build something like this. The problem is that there are peak seasons that make the price crazy expensive. To be on contiguous ships all year, the best price seemed to be around $30k... if you don't care that the ports line up (which probably makes it impossible to actually do) it was around $20k.