• non-graphic design;
  • rising;
  • narrowing;
  • graminho;
  • hull design

The aim of the article is to show that the Mutiozabal shipyard in Orio, Gipuzkoa, Spain, was using the tools and procedures of non-graphic hull-design methods into the latter 19th and early 20th centuries. These procedures allow a hull to be designed with a very simple set of tools: a template of the master-frame and some simple graduated gauges or graminhos. The plan of a 65-Burgos-foot1 (18.11 m) trading boat is used as the basis of the study. The nature of the templates and graminhos is shown in detail, as well as their use.