Keith Elliott

“During the age of sail, when wind-powered vessels were the only bridge across the vast oceans, nautical language was so pervasive that it was adopted by those on terra firma. To “toe the line” derives from when boys on a ship were forced to stand still for inspection with their toes on a deck seam. To “pipe down” was the boatswain’s whistle for everyone to be quiet at night, and “piping hot” was his call for meals. A “scuttlebutt” was a water cask around which the seamen gossiped while waiting for their rations. A ship was “three sheets to the wind” when the lines to the sails broke and the vessel pitched drunkenly out of control. To “turn a blind eye” became a popular expression after Vice-Admiral Nelson deliberately placed his telescope against his blind eye to ignore his superior’s signal flag to retreat.”
― David Grann, The Wager: A Tale of Shipwreck, Mutiny and Murder