'One Design' boats are boats built to a specific set of dimensions and then, often and to varying degrees of competitiveness, raced. On the River Shannon, Ireland, they race an open dinghy called the Shannon One Design and have for about 90 years. The boats can be built by anyone with the inclination, as long as the dimensions are adhered to and the measurers certify the boat as being correct. In the late 70's Irish TV made a program called 'Hands' that showcased traditional crafts and their practitioners. Building a Shannon One Design was among the topics they covered. (Those links are the first, second and third parts that make up the episode). Interestingly, they also did an episode on building a 'Curragh' (part 2 part 3), a boat design that people have been building on the coasts of Scotland and Ireland since before anyone even thought to notice they were building boats a specific way. Following links, there are also episodes about wheel building, chair making and weaving, among others.