Greenpeace activists stopped a fishing vessel leaving Auckland harbour, New Zealand, this afternoon and used it to send a message calling on the Foodtown supermarket chain to stop selling orange roughy and to implement a sustainable seafood policy. The 43 metre bottom trawl vessel was blockaded by activists in life rafts, who locked themselves to a chain encircling the ship and held up banners which read 'Foodtown costing us our oceans'. Another two activists locked themselves to the structure of the ship. Greenpeace New Zealand oceans campaigner Karli Thomas said the peaceful direct action was part of a continuing campaign to save New Zealand seas from overfishing and destructive fishing practices. 7 August 2009. Greenpeace activists stopped a fishing vessel leaving Auckland harbour, New Zealand, this afternoon and used it to send a message calling on the Foodtown supermarket chain to stop selling orange roughy and to implement a sustainable seafood policy. The 43 metre bottom trawl vessel was blockaded by activists in life rafts, who locked themselves to a chain encircling the ship and held up banners which read 'Foodtown costing us our oceans'. Another two activists locked themselves to the structure of the ship. Greenpeace New Zealand oceans campaigner Karli Thomas said the peaceful direct action was part of a continuing campaign to save New Zealand seas from overfishing and destructive fishing practices.