Song Dynasty China pioneers the dry dock, transforming ship repair
Dry docks first appeared in Song Dynasty China, when palace official Huang Huai-Hsin devised a way to repair the emperor’s decaying dragon ships without destroying them. Engineers dug a basin beside Chin-ming Lake, floated the 200-foot vessels in over submerged beams, then pumped the water out. Europe wouldn’t build anything comparable for another four centuries.









