One also has to have a military industrial complex capable of building the equipment. With the Project Protector program the New Zealand shipyard was capable of building the IPVs at a competitive price, and that shipyard was capable of building ship modules for the OPVs as well. Unfortunately the shipyard capable of assembling the OPVs was in Australia. While that Australian shipyard could have built the MRV, the Dutch shipyard was able to build it quicker, and probably for less. At that time the Australian shipyard was still building the last of the Anzac frigates. If that shipyard wasn't busy at that time, they could have built the MRV too...While involving Australia and not New Zealand, a number of Australian programmes are either domestic designs, or domestic production of foreign designs. This is often done even if the Australian-built kit is up to ~30% more than the same piece of foreign kit. The reason behind this is the amount of flow-through. Any monies spent in "Buy Australia," lead to more Australians employed, who in turn pay taxes and spend money on goods and services, which lead to yet more people employed, paying taxes and purchasing yet more goods and services, etc. Also, any domestic production is going to use more domestic resources (rawmats, sub-components, etc) for whatever is being worked on. And this increased demand for product from domestic sources again leads to more domestic employment and spending.
I would imagine that New Zealand is in a similar situation, though not necessarily to the same extent, being smaller both in population, resource and industrialized levels.
-Cheers
I don't know of a shipyard that is capable of building the IPVs as well as the OPVs and MRV at the same time in New Zealand. Sometimes there is no choice but to buy abroad...
Overall with Project Protector, it appears New Zealand built as much as they were able to in New Zealand.