Brazil's energy company Petrobras withdrew its ship from New Zealand at the end of last year, citing insufficient signs of oil or gas in the Raukumara Basin off the East Coast. Neither the company nor the Government blamed the sea-borne protests staged by Greenpeace with the support of an East Cape iwi, Te Whanau a Apanui, but they were a disorderly intrusion that did this country no credit.
Those who oppose mining offshore or anywhere have legal avenues available. Greenpeace and the iwi tried and failed to convince a High Court judge to quash Petrobras' exploration permit. They could have appealed but preferred to take to the water.
They no doubt find some inspiration from disruptive tactics against Japanese whaling in the southern ocean and, going back a bit, New Zealanders' flotillas against French nuclear tests in the Pacific. But sooner or later a protester could be seriously injured and sympathisers in their cause would be the first to ask why the Defence Force did not intervene.
The proposed legislation provides them, or the police if they are on hand, with the power to do so. As late amendments to the bill, the punitive powers will not face public submissions to a select committee of Parliament and since they will apply outside the territorial limit, they need not be reconciled with the Bill of Rights Act. It is not clear why the Government is avoiding those tests. Its proposals would probably pass them.
There appears to be no need for urgency. New onshore mining techniques such as fracking of shale rock have added greatly to world supplies of gas and oil and there was little interest in the latest permits offered for offshore exploration around New Zealand. But we need to be ready as soon as interest returns.
If Maori and environmental protests are going to greet every survey ship, the law needs to be prepared. The provisions of the bill will allow objectors to be seen and heard on the sea but not to drive away those who can provide the knowledge and resources we need.