The first Greenpeace ship departs from Vancouver to protest against the upcoming Cannikin nuclear weapon test in Alaska.

Cannikin

1971 underground nuclear weapons test on Amchitka island, Alaska, United States

Cannikin was an underground nuclear weapons test performed on November 6, 1971, on Amchitka island, Alaska, by the United States Atomic Energy Commission. The experiment, part of the Operation Grommet nuclear test series, tested the unique W71 warhead design for the LIM-49…