ade of sturdy pine wood. Its unique features included multiple decks for protection and tactical advantage, a central command tower, and innovative construction using pine for the hull and oak for pegs and masts. Notably, bamboo pegs were used instead of iron nails, improving water absorption and hull integrity. License: CC Attribution (http://creativecommons.org/licenses/by/4.0/). 3D model is by 융해열흡수 (https://sketchfab.com/heat_of_fusion)