Never doubt the effectiveness of the whip

As a follow up to my previous post regarding conditions on a slave galley; if you ever doubted the efficacy of the whip then this picture should convince you otherwise. As can be seen from the exposed back of the oar-slave, the overseers' whips bite deep into yielding, naked flesh drawing blood and inflicting a terrible wound that most likely will never fully heal. 

Imagine, if you can, the terrible pain as unexpectedly, the whip cuts across your back and your scream of agonised pain. Each time you stretch at the oar, the wound will open and remind you that the overseers are forever prowling the catwalk with their whips at the ready eager to spur you to greater effort.

Picture sourced from the internet.I suspect it is from the movie, "300" but i could be wrong. The text ismine.