There is an elaborate set up of boats that traverse the seas of the kingdoms
stopping in a different ports. Each ship has its own destination schedule and
fee range.
If you are in a boat when the game crashes, and find yourself still on board
when the game comes back up, just be patient, each boat cycles through a 24
hour game time period so you will find yourself at a port within that time
frame. It may not be the original port of intent however. You are asked to
roleplay that rather than complain on question.
Roleplay reasons might be a storm threw them off course. You were asleep when
it docked and so on.