Without an attached [[boat lock]] anyone can use the ship. If the ship is not [[mooring anchor|moored]] it can be dragged or pushed away.
Upon finishing The person who finishes the ship becomes the owner. This was changed in Summer 2011. Before that the last person who had the unfinished ship in the [[inventory]] becomes became the owner. Dragging the cart To prevent someone from stealing or ship the finishing your unfinished ship is built boat make sure no one but you can get access by either building it in does not reliably set the ownershipa locked cart or a small temporary house. Ownership can be transferred by the owner in the vehicle management window.
The owner and any person with the ''Manage'' right can manage the usage permissions through a window available via the ''Manage vehicle'' menu option.