Sling your hook

Posted by Ian Ramsay on February 21, 2008 at 12:39:

Re. "sling your hook" being a dockers phrase?: I had always understood that it was a sailors phrase. The "hook" being the anchor which when hauled up was catted, tied or slung, to the cathead to stop it swinging about freely with the motion of the ship. The ship could then move off. Hence to "sling your hook" meant to move off or go away. Any thoughts?