China has proposed its watertight bulkhead Fuzhou shipbuilding technique as a nomination item for the List of Intangible Cultural Heritage in Need of Urgent Safeguarding, with the following description: The watertight bulkhead Fuzhou shipbuilding technique was developed in Fujian Province in southern China, and it made it possible to build seagoing ships with watertight bulkheads. If one or two cabins were accidentally damaged during the voyage, seawater would not flood into the other cabins and the ship would continue to float. The sailboats were mainly made of camphor, pine and fir wood, and assembled using traditional carpenter's tools. The key technologies required to build this type of sailboat were: mortise and tenon joints, which refer to the tongue-and-groove joints of the planks, and the use of ramie, tung oil, lime and other materials as plugging materials between the planks. The shipbuilding project was directed by a skilled "master head" (a respectful title for the craftsman in charge of shipbuilding in southern Fujian), who supervised a large number of craftsmen who worked closely together. Local communities also participated in the process, holding grand ceremonies during the shipbuilding process and before the new ship was launched to pray for calm seas and the safety of the crew. The experience and working methods of the watertight bulkhead Fuzhou shipbuilding craft were passed down through oral transmission between masters and apprentices. However, as wooden ships were replaced by steel ships, the demand for Chinese junk ships decreased sharply; today, there are only three master craftsmen who fully master this technology; the scarcity of raw materials has also led to an increase in related construction costs, and the spread of this craft tradition has gradually decreased, and the inheritors have been forced to find other jobs.