Greenpeace Boards NZ Survey Ship Over Deep-Sea Mining

Protesters Occupy Research Vessel in Wellington Harbor

Greenpeace Aotearoa activists escalated their campaign against deep-sea mining on September 26, boarding the RV Tangaroa shortly after it docked in Wellington Harbor. According to a report by The Maritime Executive, the demonstrators occupied the vessel for roughly seven hours, staging a protest that included one activist dressed as US President Donald Trump flying an American flag, and another displaying a banner reading “Don’t Mine the Moana.” Police eventually removed the protesters from the ship.

The Tangaroa, built in 1991 and measuring 70 meters, is New Zealand’s only ice-strengthened, dynamically positioned deep-water research vessel. It is operated by Earth Sciences NZ, formerly known as NIWA, and has been used for decades of oceanographic and environmental research across the South Pacific, Southern Ocean, and Antarctic waters.

A Survey Mission With Commercial Stakes

The vessel had just returned from a 65-day expedition in the Clarion-Clipperton Zone, a Pacific seabed region rich in polymetallic nodules. The survey was conducted for UK Seabed Resources Ltd, a subsidiary of US-based Glomar Minerals, covering the company’s UK2 license area of approximately 133,000 square kilometers. Notably, this was described as the first thorough geological and biological assessment of that license area in over four decades.

The nodules being surveyed contain manganese, cobalt, nickel, copper, and rare earth elements — materials increasingly viewed as strategically critical. Glomar Minerals has indicated the data gathered could support a decision to move toward commercial extraction as early as next year.

Greenpeace’s Objection

Greenpeace campaigner Juressa Lee argued that permitting deep-sea mining risks irreversible harm to ocean ecosystems and threatens the cultural heritage and livelihoods of Pacific communities, framing the mineral demand as tied to military supply chains. The group also pointed to the broader political backdrop: the Trump administration’s push to fast-track seabed mining through an executive order issued last year, and the more recent launch of Project Vault, a US initiative aimed at stockpiling critical minerals for defense and industrial use.

Greenpeace further contends that Washington is moving toward issuing its own commercial seabed permits unilaterally, sidestepping the International Seabed Authority, where UN member states are still negotiating a regulatory framework for the practice. This is not the Tangaroa’s first brush with activism — the vessel was similarly occupied by Greenpeace in 2015 over its role surveying New Zealand waters for offshore oil drilling.

What This Means for Vessel Operators and Charterers

For ship operators and charterers involved in scientific survey or exploration charters, this episode is a reminder that vessels tied to politically sensitive resource activities can become direct targets for activist boarding, even in home ports with normally low security risk. Operators chartering research or survey tonnage into contested extractive industries — whether offshore drilling, seabed mining, or fisheries — should factor protest and boarding risk into port arrival planning, security briefings, and crew procedures, not just weather or mechanical contingencies.

The incident also underscores the widening gap between national-level survey and permitting activity and the still-unsettled international regulatory regime under the ISA. Owners and managers supporting exploration campaigns in the CCZ or similar license areas should expect continued scrutiny of vessel condition, equipment certification, and environmental compliance documentation, particularly as data gathered on these surveys increasingly feeds directly into commercial exploitation decisions. Independent condition and equipment surveys, along with clear documentation trails, will likely become more important as regulators, NGOs, and the public press for transparency on how survey data is used to justify mining permits.

As deep-sea mining moves closer to commercial reality, vessels engaged in this work — and the companies operating and chartering them — should anticipate that reputational and operational risks from activism will grow alongside the industry itself.

Reviewed by Ibrahim Halil Ceylan, Marine Surveyor at Apeks Marine.