Returning Rental Boats from the Sign

[Algol]

Hello,

I plan to explore islands in the seas using a rental boat, but I'm worried the ships will be returned using the signs when the boat is docked on an island. How much time do I have to explore an island without risking losing the boat?

[PowerWord Rage]

Hello, it's not possible to return the ship via signboard if you're still logged in ( including server transition. Means if you're in Cordor for example, no one can return lease unless you're logged off ).

The only time limit is the rental lease which is pretty long ( if i am not wrong, about 8 IRL hours )