A very large off shore oil spill requires an immediate response before civilian specialists can bring their equipment to New Zealand. We are on our own for about a week.
Bad weather breaks up oil spills. Calm weather doesn't.
The Norwegian ship KV Svalbard carries 300m oil booms along with skimmers and pumps. The proposed coastguard force allows for two.
The Patrol boat is built for mission ship containers including oil spill booms, skimmers and pumps.
Aerial spraying of dispersant will require either specialised or modified aircraft. Civilian options may well be better than military ones.
Shore work could be carried out by Pioneers and any training units that are available.