The Portuguese First Arrive in Japan is presented as an accident with far-reaching consequences: a typhoon diverted three Portuguese traders to Tanegashima in 1542, and their arrival immediately opened trade. Father Domingo recounts the landing to John Blackthorne as the starting point of Portugal’s presence in Japan, while the surrounding account shows how maritime knowledge and control of ocean routes could turn a chance encounter into enduring influence.

The landing and the opening of trade

Father Domingo dates the arrival to 1542, the year he was born. Three Portuguese traders—da Mota, Peixoto, and a third whose name he cannot recall—were sailing a Chinese junk from a port in Siam and trading along the China coast. A typhoon drove them off course; they came safely ashore at Tanegashima in Kyushu. In Father Domingo’s account, this was the first time a European set foot on Japanese soil. Trade began at once, making the landing more than a brief encounter: it established a new channel of contact between Japan and the Portuguese traders moving through Asian waters.

The circumstances distinguish the arrival from a deliberate expedition to Japan. The traders were blown there while pursuing commerce elsewhere, and the weather that disrupted their intended route brought them to a place they had not set out to reach. The novel therefore locates the beginning of Portuguese-Japanese trade in the conjunction of existing Asian commerce and an unpredictable storm.

Traders, missionaries, and competing claims

The commercial contact was followed by a religious presence. Father Domingo says that Francis Xavier, one of the founding members of the Jesuits, arrived in Japan in 1549, seven years after the traders. Xavier died in China three years later. Father Domingo’s account conveys not only a chronology but also the Jesuits’ sense of rivalry: he regrets that one of his own order was not first to arrive, believing that an earlier Franciscan presence might have given the Brethren a claim to the realm rather than leaving that position to the Portuguese. This is his partisan judgment, not an outcome established by the landing itself.

Blackthorne’s questions place that history within a continuing system of exchange. During three days and nights of conversation, he asks Father Domingo about Japan, its rulers and warriors, trade, war, peace, the Jesuits, and Portuguese activity in Asia. The annual Black Ship from Macao belongs to the same commercial world opened by the traders’ arrival. The first landing thus serves in the account as an origin point for a continuing traffic of ships, goods, religious orders, and information.

Navigation as maritime power

The wider narrative makes clear why ocean travel and navigational knowledge matter to the Portuguese presence. Existing charts are described as so vague as to be nearly useless, while longitude cannot be fixed. A rutter—a pilot’s record of a route—offers a practical alternative: compass courses between ports and headlands, soundings and water depths, seabed descriptions, sailing times, winds, currents, storms, safe anchorages, water stops, reefs, and hazards. It records how to reach a place and how to return.

Such books are not infallible. They may contain copying or translation errors, or even deliberate falsehoods, and a pilot cannot be certain of a route until he has sailed it himself. Yet Portuguese and Spanish rutters describing routes to the New World, through the Strait of Magellan and around the Cape of Good Hope, and onward to Asia are treated as national secrets and sought by their Dutch and English rivals. The arrival at Tanegashima occurs within this larger struggle over routes: trade depends not simply on ships reaching foreign shores, but on possessing and protecting the knowledge that makes repeated voyages possible.

The continuing authority of the pilot

Later events show the Portuguese role in Japanese ocean travel persisting well beyond the first landing. When Vasco Rodrigues pilots Toranaga’s galley from the Izu Peninsula toward Anjiro, he leaves the coast near Cape Ito and takes an open-water course west-southwest toward Cape Shinto, about two hundred miles away. Rodrigues explains that a coastal route would be safer but slower, and that Toranaga has asked him to make the passage quickly. The episode contrasts Japanese skill in coastal sailing and warfare with the fear local pilots feel when they must navigate out of sight of land.

Rodrigues also describes a law made under the Taikō requiring Portuguese pilots aboard the few Japanese ocean-going ships. The pilot’s importance is structural: at sea, he sets the course and acts as the ship’s final authority. Against the uncertainty of charts and the difficulty of open-water navigation, that expertise makes a Portuguese pilot valuable to Japanese rulers as well as to Portuguese commerce. The accidental arrival in 1542 therefore begins a history in which maritime access, navigational knowledge, and political dependence remain closely linked.