What is Canada's amphibious capability? ie; NZ with HMNZS Canterbury and expanding it with the proposed ESV by 2029. Aussie has a pretty decent capability for the size of their Defence force, the UK's is somewhat wonky.
I can't see a ship building in NZ ever being able to compete with the larger yards overseas. The yards in Whangarei have always really been touch and go, and they are more small to medium vessels and if we increase the capability and size of the yard to build larger vessels I can't see it being sustained as
ngatimozart said it would be a
boom and bust cycle.