Are you into the shipping business and you want to ship containers to new Zealand? This is very easy to do. If you do not have an ocean liner of your own, you can always rent one around. The ocean liner will however charge you something hefty. But whatever you have to pay is far below what you will have to pay when you are shipping the things by air. Air transport can be considerable expensive and anyone getting involved in them will have to be very careful how he makes his choices. Since you will have to pay more by air, it is always better to go for sea transportation of your container.
It does not matter if you are shipping a 20 feet container to New Zealand or 40 feet container. All that matter is the weigh of what you are transporting. If the weight in the 20 feet container is more than the weight in the 40 feet container, you may end up paying more for what you have in the 20 feet container in comparison with what you have to pay for what you have in the 40 feet container.
The ocean liner you are using for the transportation will weigh each of the containers you have to transport and you will be charged based on what each of them is weighing. The 20 feet container can transport up to 22,000 kg of products. On the other hand, the 40 feet container can carry up to 27,000 kg of material. The 40 feet container tends to be more in number than the 20 feet containers. This is because materials transported over such a long distance like New Zealand are almost always much.
It is also cost effective to transport things in the 40 feet containers with respect to the 20 feet container.