You can, but we do not recommend it and it’s shipped strictly at your own risk. We have no control over who works on the ports both here in Australia and over in New Zealand, as well as who the crew are on the vessel. Roll on, Roll off shipping is designed strictly for the movement of empty vehicles, so if you choose to leave the baby seat in there then there is a chance it won’t be there at the other end. If the baby seat is not worth much money then it could be worth a gamble, although if you want to ensure you have it over in NZ then you are best off taking it as excess luggage on the plane when you fly across.