Two or more ships tied up side by side are called 舫. Inspired by the principle of raft manufacturing, the ancients connected two or more hulls side by side to create a raft, which not only increased the width of the ship, but also improved the stability and loading capacity of the ship.
From the definition of 舫, we can know that the original method of making 舫 was very simple, just tied the two boats together with ropes. Gradually, it has evolved to use wooden boards or wooden beams to place them on two ships, and nail them together with wooden nails, bamboo nails, or iron nails. There is also a certain distance between the two ships, and it is not necessary that the ship s side is close to the ship s side. Together.
(2) After the two ships are connected in parallel, the deck area has more than doubled. In addition, there are two sets of bilges, which greatly increases the carrying capacity. Due to the widened hull, the stability is improved, and the sailing is safer, which means much of the ancient aircraft carrier.
In addition to the hull consisting of two hulls, in the history there have also been composed of multiple hulls. This kind of boat travels smoothly, and the house can be built on it, becoming a special boat for the ruling class when traveling.
As early as the Western Zhou Dynasty, had already had 舫, and it was often used in the Han Dynasty. Zhou dynasty had strict rules on boating: Tianzi took the boat-making, princes took the weizhou, senior officials took the ark, and general officials took the special boat, and ordinary people could only use 桴. Boatbuilding is composed of multiple hulls, Weizhou is composed of four ships, Ark is composed of two ships, Special boat is a single ship, and 桴 is a wooden raft and bamboo raft.
Because of its huge hull, the speed of 舫 is slow, but the voyage is relatively stable. Ancient royals and nobles often decorated it and took it for fun. In the Paintings of Luoshen, painted by Gu Kaizhi in the Eastern Jin Dynasty, there are two juxtaposed hulls in the painting. It can be seen that the manufacturing technology of catamarans during the Eastern Jin Dynasty was already very mature.
Later, the economic center of China gradually moved south, and the gardening engineers in Jiangnan created a kind of architectural image similar to that of a painting. Visitors were in it, as if they were in a boat, thus creating a garden building like 舫 . Among the Jiangnan gardens in China, the Xiangzhou of the Humble Administrator s Garden in Suzhou and the painting house in Yiyuan Garden are typical examples.