Keelhauling (Dutch kielhalen; `to drag along the keel`; German Kielholen; Swedish kölhalning; Danish kølhaling; Norwegian kjølhaling) is a form of punishment meted out to sailors at sea. The sailor was tied to a line that looped beneath the vessel, thrown overboard on one side of the ship, and dragged under the ship`s keel, either from one s...... Found on http://en.wikipedia.org/wiki/Keelhauling