我国是世界上航运发展最早的国家之一。据历史文献和考古发掘,我国早在三、四千年以前,就有了大规模的水上运输活动了。从商朝的象形文字甲骨文“舟”字的字形可以看出,那时的船已经不是独木舟了,而是木板构成的,在船体结构上已经考虑到船体的 China is one of the earliest shipping countries in the world. According to historical documents and archeological excavations, as early as three or four thousand years ago in our country, there was a large-scale water transport activity. As can be seen from the glyphs of the oracle “Zhou” in the Shang Dynasty, the boat at that time was no longer a canoe, but rather a wooden plank, and the structure of the hull has been taken into account