did-you-kno:

Pirates didn’t make their captives walk
the plank. Though big fans of torture
methods like flogging and marooning,
there are no actual records of pirates
using a plank. The first mention of plank
walking was in a 1724 fictional novel
by author Daniel Defoe, but if real-life
pirates wanted to drown someone, they
probably just threw them off the boat. Source Source 2