When I read the Coles report, didn't he criticized New Zealand for not setting up a supply line chain as well. Even though the ship is mostly commercial parts bought off the shelf, much of the parts for the Canterbury are of European make. While the OPVs and IPVs were built locally in Australia and New Zealand, and with companies that have license agreements for parts, this is not the case with the Canterbury. Being able to find and acquire spare parts in the future is very important, as important as building the ship in the first place.
I know the searchlights were purchased from Norselight in Norway for the entire protector fleet, you could't get a longer supply chain from Halden to Devonport, the company doesn't even have a New Zealand agent.