At the Maritime Museum in Orebic, Croatia, a sailing ship model has just uncovered a mystery. Its sails, long misidentified as leather, turned out to be canvas soaked in an unknown coating. Laboratory tests showed the original material was treated with a resin that, over time and poor storage, caused cracks and fading. After a careful cleaning, the painted decorations on the sails reappeared, revealing the ship's name and its royal connection. The nowβreadable ornamental motifs hint at symbols of power and protection, opening new research paths for scholars interested in how ancient craftsmen communicated through naval art. This case shows how material science and history can team up to rewrite an object's biography.
FTIR spectroscopy identified a matrix of colophony mixed with vegetable oils, typical of 18thβcentury waterproofing treatments. Xβray microβtomography revealed a threeβlayer structure: linen canvas, colophony layer, and ironβbased pigment paint. The presence of cinnabar red pigments points to a Mediterranean origin, as this mineral was widely used in Adriatic naval paintings. Optical microscopy showed a dryβbrush technique, indicating artisans applied colors freehand, without stencils, to personalize the royal flag. Isotopic analysis of the model's wood confirmed oak from Central Europe, matching the trade routes of the period. These findings complement archival sources that mention a royal commission for a demonstration model intended for a diplomatic visit in 1765. The interdisciplinary blend of chemistry, physics, and art history reconstructs not only the material composition but also the socioβpolitical context of the model's creation.
