The Golden Rule crew prepares for voyage

Caleb Loehrer / The Garden Island

Zoe Byrd on board the Golden Rule at Nawiliwili Harbor, mentally preparing for months at sea.

NAWILIWILI — Zoe Byrd has been protesting the U.S. government’s nuclear testing programs since the 1970s, but next month, the movement will take her to the middle of the Pacific Ocean, where she will spend weeks at sea on a 33-foot, 60-year-old wooden boat in cramped quarters alongside three other people she knows virtually nothing about.