在今年7月11日我国第一个“航海日”里,我们不能不想起一个伟大的航海家——郑和和他的船队。据了解,郑和下西洋船队中最大的舰船有8层阁楼,排水量达2万吨,而且航海技术中无论是定向、记程、探测还是线路设计、海图记载等在当时都处于世界领先地位,因此,从交通的视角来看, 郑和“七下西洋”的壮举是当时 In our first “sailing day” on July 11 this year, we can not but think of a great navigator - Zheng He and his fleet. It is understood that Zheng He’s largest fleet under the Western Fleet has 8 layers of lofts, displacement of 20,000 tons, and navigation technology, whether it is orientation, schedule, sounding or line design, charts and other records at the time were in the world Leading position, therefore, from a traffic point of view, Zheng He’s “Seven Seas” feat was