Este es el artículo de Wikipedia en donde se habla de sus barcos monstruosos. Y aquí hay una lista de los barcos de madera más grandes del mundo, en donde también se habla de estos barcos del tesoro (que es como se les denomina) chinos:
Historical records from the document History of the Ming dynasty claim that the largest Chinese treasure ships were more than 400 feet (120 m) long. However, the size of treasure ships is still disputed and some scholars argue that they were probably closer to 200–250 feet in length, while others argue that they were actually 309–408 feet in length and 160–166 feet in width.
Pero vamos, iros a las fuentes de Wikipedia mejor:
Nothing in the archeological record so far provides direct evidence for anything like the Ming Dynasty's treasure ships, and one must apply the same empirical skepticism normally used in evaluating archeological claims to accounts of these ships. Did nine-masted ships over 400 feet long really accomplish these fabled voyages?
Perhaps these texts only describe a grandiose dream and the overseas trading voyages of the early Ming Dynasty were, in fact, accomplished with large numbers of smaller ships. Or perhaps one or more ships of this kind were built at the Longjiang shipyard outside Nanjing but never sailed.
Buscando fuentes también me he encontrado con este hilo de hace unos años que habla sobre Zheng He, para el que pueda interesarle, pero vamos, yo no le haría mucho caso teniendo en cuenta que no hay ni una sola fuente y se habla de que en cada barco se llegaban a reunir 27000 hombres xd.