I'm sure this is not a new thing, but I just found out about it, and I think it's pretty neat!
My boat to Santorini was cancelled and I had to show the local office my proof on www.vesselfinder.com before they would believe me and helped me reschedule.
The were talking about a normal minor delay but the ship was still in port, 3 hours away.
There are some really cool ships sailing around the Mediterranean.
Just look at Club Med 2