Excuse me,

   I'm new to the game and chose Houston, Texas as my first city. But I'm very confused on the workings:

-When you put a ship on a route, can you put the ship on a different route or is it forced to constantly stay on that route?

-Do all ships have to go from Houston? For instance, if I wanted to do a route from LA to Shanghai, could I do that? Whenever I try to set up a new route, it always has Houston as a stop.

-Can a ship have multiple destinations?

Thank you all so much.