Seven Greenpeace activists hang a banner from Auckland's harbour bridge to mark the start of a campaign against nuclear arms at sea. It reads 'Spread "Kiwi Disease" Nuclear Free Seas'. Strong winds cause the banner to tear and it stays in position for 35 minutes before the climbers recover it and lower themselves to the water where they are picked up by an inflatable boat. The launch of the campaign marks the second anniversary of the Rainbow Warrior bombing in Auckland on 10 July, 1985. The arms race at sea has accelerated over the previous 10 years. It is estimated that between one third and one quarter of all nuclear weapons are at sea.