Hmmm...
The Richard F. Irvine that use to sail the Rivers of America is now known as "Liberty Belle".
The Richard F. Irvine that now sails the Seven Seas Lagoon was known as... hmmm... Magic Kingdom. There were at least two ferries between the TTC and MK and I can only remember seeing "Magic Kingdom" on a wooden sign that hung on the ship.
Is this one too tough? I'll give a little hint. Disney transitions the background (music and visual) inbetween each land as you leave one and enter the next. There is one though that they couldn't make a natural transition.