Zheng He commanded a series of seven major Ming-dynasty maritime expeditions between 1405 and 1433. The fleets traveled through Southeast Asia and the Indian Ocean to South Asia, the Persian Gulf, the Arabian Peninsula and East Africa.
Born Ma He in Yunnan to a Muslim family, he was captured during Ming military campaigns, entered imperial service as a eunuch and became a trusted official of the Yongle emperor.
The first expedition departed in 1405. Chinese sources describe an enormous state fleet including large treasure ships as well as supply, troop, water and support vessels.
Exact dimensions assigned to the largest treasure ships in later accounts remain debated. TransitSatellite should distinguish figures preserved in later historical texts from dimensions archaeologically demonstrated by surviving ship remains.
The voyages were diplomatic, political and commercial. They carried gifts, imperial messages and military power while returning envoys, tribute goods and exotic products to China.
Zheng He’s fleets operated within maritime trade networks that already connected China, Southeast Asia, India, Arabia and East Africa. They expanded Ming state presence rather than creating those routes from nothing.
After the seventh voyage, large-scale state expeditions ended. Explanations include changing court priorities, fiscal cost and military concerns on China’s northern frontier.
For TransitSatellite, each voyage should be mapped separately where itinerary evidence exists. A single “Zheng He route” would blur almost three decades of different expeditions.