How can one make a ship in a bottle?

first, the bottle is created, just the same as any other bottle. The tricky part is inserting the ship. the ship must be made in a way that the mast and sails can be collapsible so that everything can fit through the neck of the jar. once the collapsed version of the ship is inside, it must be erected and the masts glued in place. This takes quite a bit of skill from the person who made the ship.