Joseonjang refers to a craftsman who makes Hansun Hanryuk, a traditional Korean ship. In the case of Hanseon, it takes two to three people to build a large ship and one to two people to build a small ship, depending on the type of ship. The shipbuilding yard requires not only knowledge of the ship's structure but also architectural engineering skills. It also needs to be accurate and experienced as it is necessary to build a ship, a solid wooden structure, by weaving in numerous members.
Among the ships on the Han line, the boats operating on the river are called Gangseon 江船. Unlike Byeongseon and Jounseon, which operated on the sea, Gangseon was built to suit the rivers of Korea. Typical riverboats are ferry boats and ferry boats used to cross rivers at ferry sites. The common thing between ferry and ferry is that there are no masts. On the other hand, it was said to be a night-distance boat, which was available both in the sea and on land, and entered inland through the river. The ship is characterized by its flat bottom, allowing it to sit still in the sand by the river.
Since the most commercially developed waterway in Korea was the Han River Waterway leading to Seoul, the majority of the Hanseon engineers, especially the Gangseon engineers, lived in the Han River basin. The technology for manufacturing steel wires developed in the Han River basin, and the pulse of the technology has continued to recent years.
Recently, however, traditional craftsmen have died of old age, and the number of skilled craftsmen is so rare that they are almost exhausted. Kim Gwi-seong, the owner of a shipbuilding yard who has been engaged in Joseon and ferry services for eight generations, continues the tradition of making traditional Korean ships.
He lived in Baealmi-dong, Hanam, under Paldang Dam, and learned how to make strong ships from his father, Kim Yong-un. Most of the cruise and exhibition ships in Seoul and Gyeongji areas, including the Hwangpo sailboat with a head of Yangpyeong, were produced by Kim Gwi-sung.