Greenpeace campaigners chained the propellers of four ships they have accused of illegal fishing to the quayside of their Portuguese port of Aveiro, the organisation said Tuesday.
"The vessels have track records involving pirate fishing, including fishing without a flag or legal quota, using illegal gear, using multiple identities, and other breaches of international regulations," Greenpeace said.
The incident comes weeks after the environmental NGO created a blacklist of illegal and unregulated fishing vessels on the web, along with the companies that own them.
"All four ships chained up today, as well as their owner, are included in our blacklist," the organisation said, while adding that it has urged the Portuguese government to ensure the boats will not fish again.
