The scene is set for a skirmish off the North Island's west coast this morning as protest vessels hold fast to Anadarko oil drilling ship the Noble Bob Douglas.
Anadarko had intended to begin drilling 185km off the coast of Raglan on Thursday or Friday but has been shadowed by a flotilla of six protest vessels.
One, the Vega, remains within the 500m exclusion zone.
Among those on board the 11.5m ketch are Greenpeace NZ chief executive Bunny McDiarmid and former Green Party co-leader Jeanette Fitzsimons.
Anadarko has said that the presence of the protest vessels would not prevent the drilling from going ahead but Greenpeace spokesman Steve Abel did not believe this.