Ferries are pretty much never the cheapest way to get anywhere, and are always the least time-efficient, but the boat rides themselves can be fun: long-haul ferries in Japan have communal bathhouses, dining halls and even karaoke rooms.
On overnight ferries, 2nd-class travel means sleeping in common rooms on plastic mats or the floor; however, you can pay a little extra to upgrade to a dorm room (or a lot extra for a suite).
Most major ferry companies have English websites for booking tickets; otherwise book through a travel agency like JTB (www.jtb.co.jp).
Ferry fares fluctuate by season and by oil price; they change every three months.
|Route||2nd-Class Fare (¥)||Duration (Hr)|