KEELHAULING: WHEN THE SEA WAS AN INSTRUMENT OF PUNISHMENT

"Keelhauling" was a brutal naval punishment practiced especially during the 17th and 18th centuries.

It involved tying the condemned person to a rope that passed beneath the ship's hull, from one side to the other. The sailor was dragged underwater, scraping against the hull—often encrusted with barnacles and marine organisms that lacerated the skin—and faced a grave risk of drowning. The punishment was frequently fatal.

It was administered as an extreme penalty for serious offenses: desertion, theft, severe insubordination, or violations of naval military discipline. It was a form of public punishment that served both as a means of execution and as a way to terrorize the rest of the crew, reinforcing the captain's authority in an environment where discipline was critical for survival at sea.

The practice gradually disappeared as naval codes and human rights standards evolved, although it persisted in some navies until the 19th century. Today, it survives in folklore and naval literature as a symbol of the merciless punishment and brutality of life at sea in bygone eras, appearing in novels, films, and video games set during the Age of Sail.