In five minutes: red-seal ships and Vietnam
Red-seal ships were merchant vessels that carried official Japanese trade licenses to ports across Southeast Asia. The vermilion seal on a license gave the voyage political recognition, but the ship and its cargo belonged to merchants, not to a government-owned fleet. Japan’s National Archives says that from 1604 to 1639, 350 ships crossed the sea to Southeast Asia. Its English page describes 130 as ships that traded with Vietnam; its Japanese page describes 130 voyages to Vietnam. Those labels differ, so the two versions should not be treated as using an identical unit.
The trade connected Japan with a region whose political borders and names differed from those of the present day. Contemporary sources used terms including Annam, Cochinchina, Quinam and Tonkin for different places or political settings. Hội An, also known in older sources as Faifo, was a major port in central Vietnam, connected to the Nguyễn lords’ domain. Japanese merchants lived and worked there alongside Vietnamese residents and traders from other parts of Asia and Europe. A Japanese community grew inside a Vietnamese port; it did not rule the city.
The voyages were part of a wide maritime network. Silver, copper, sulfur and swords went south from Japan; raw silk, silk cloth, cotton and other goods circulated in return. Cargo could change hands several times, so the trade was not simply a direct exchange between two modern nation-states. Local rulers, port residents, interpreters, ship crews and merchants all shaped what moved and where it went.
A separate tally of 356 licenses for 1604–1635 divides destinations by region: central Vietnam appears 87 times, the Philippines and Siam 56 each, Cambodia 44 and Tonkin 37. These are licenses in a different period, not the same unit as the National Archives’ 130 figure. In that tally, central Vietnam is the most frequent individual destination, which helps explain why the region is central to this story.
Why Japanese merchants sailed south
In the late sixteenth century, Japanese traders looked for partners in southern East Asia amid restrictions on Japanese commercial activity with Ming China. Regional ports offered access to goods, customers and onward routes. Japanese authorities, including the Tokugawa shogunate and domain lords, issued red-seal letters to selected merchants. The license marked an authorized trader and helped distinguish that voyage from smuggling or piracy. It also gave authorities a way to link merchants’ activities to political permission.
A red-seal license did not guarantee safe passage or a profitable sale. Merchants still needed ships, crews, capital, local contacts and knowledge of changing port conditions. A voyage involved risks at sea and risks in business: cargo prices could shift, a ship might not find a buyer, and political rules could change. The seal mattered because it recorded authority, not because it removed uncertainty.
“Vietnam” is a convenient modern label for this article, but it can hide the divisions of the period. The Trịnh family held power in the north, while the Nguyễn lords governed central areas from a base around Huế. The later country’s present borders did not exist in this form. Names such as Annam or Cochinchina must be read in the context of the document that uses them; they are not interchangeable labels for a single, unchanging territory. This regional setting is part of the story of Vietnam’s dynasties and French rule.
Hội An’s position helped make it a busy port. It connected maritime arrivals with river routes and inland markets in the Nguyễn domain. Vietnamese merchants and residents were essential to the town’s economy and daily life. Japanese, Chinese, Portuguese and other traders also passed through or settled there. The port’s importance came from these overlapping networks, not from one foreign community acting alone.
The term nihonmachi, or Japanese town, describes a Japanese residential and commercial community within a larger port city. It should not be mistaken for a colony that governed Hội An. Residents needed places to stay and store goods, people who could interpret, partners who understood local trade and ways to establish trust. Their commercial lives depended on relationships with Vietnamese people and with merchants from elsewhere. Archaeology and local historical research have also helped place the Japanese community within the history of central Vietnam, rather than treating it only as an episode of Japanese expansion.
That distinction changes the way the story reads. A visitor’s account or a Japanese document may focus on the voyage, merchant or license. But a port is not just a destination on a map. It is also a place where residents maintain streets, sell supplies, negotiate prices and adapt to arrivals. The Japanese town existed within Hội An’s larger society, shaped by the Nguyễn domain and the work of local people.
Permits, ships and political relationships
The National Archives describes the red-seal system as established in 1604. The seal offered official recognition to a merchant’s overseas voyage. The license connected trade to political authority, but the day-to-day work remained commercial: shipowners and merchants organized vessels, crews sailed them, and traders sought buyers. A permit could matter at a foreign port because it identified a recognized voyage, but it did not mean that every local ruler accepted every claim without negotiation.
Japanese and Vietnamese authorities also exchanged letters. The National Archives presents a collection of 34 letters between the Tokugawa shogunate and the Quảng Nam Nguyễn side: 15 from the Tokugawa side and 19 from the Nguyễn side. Letters made trade part of a diplomatic relationship, not merely a series of private purchases. They also remind us that the region’s political actors had their own interests and strategies. A 2019 study by Takashi Hasuda and Hitoshi Yonetani examines early Japan–Vietnam contact through letters and stresses the importance of reading their language and political setting carefully.
A 1617 order attributed to Nguyễn Phúc Nguyên offers a concrete example of local demand. The National Archives describes an instruction to buy red copper carried on trading ships from Fujian, Guangdong and Japan because the Thuận Quảng area had no copper deposits. This evidence shows why it is misleading to describe trade as Japanese merchants simply selling whatever they chose. Vietnamese authorities and markets had needs that influenced which goods were valuable.
The goods themselves connected different places and people. Japanese silver and metals entered regional exchange, while silk and cotton were among the goods moving through the network. A particular cargo might be sold locally or passed onward. Port traders had to make deals across differences in language, measures, credit and political custom. This work required more than the ship and the seal: it depended on human relationships at the quay and in the market.
Images can help us picture the ships, but their limits matter. A painted screen from the early seventeenth century shows a red-seal vessel and sailors. It is evidence for how such a ship was represented, not a technical blueprint or a record of one specific voyage. A ship illustration in the National Archives’ Gaiban Shokan collection is also valuable because surviving depictions of these vessels are limited. That collection was completed in 1818 from earlier materials, so it is a later compilation rather than a photograph-like contemporary view.
Ships themselves combined influences from different maritime traditions. The National Archives describes reported features including a Chinese junk-style hull, a Western stern and helm, and a Japanese-style front. The variety cautions against imagining one standard design for every licensed vessel. The surviving images and written records offer fragments, and each should be read for what it can actually show.
Hội An’s Japanese Covered Bridge is another visible link to the community. Local tradition associates the bridge with Japanese traders, and a pagoda is attached to one side. The bridge’s long life gives modern visitors a landmark connected to Hội An’s past, but no single building can stand for all the town’s history. It is better understood as one part of a city formed by Vietnamese residents and a changing mix of visitors and traders. For a closer look at the bridge and the former Japanese community, see Hội An’s Japanese Bridge and the Lost Japanese Town.
How the voyages stopped
In 1635, the Tokugawa shogunate prohibited Japanese vessels from sailing abroad and restricted Japanese people’s overseas travel. The National Archives says red-seal ships then ceased to ply. This ended the official voyages departing Japan under the earlier system; it did not instantly erase relationships or communities that already existed overseas.
The 1635 restriction should not be confused with the 1639 prohibition on Portuguese ships entering Japan. Both belong to the Tokugawa government’s changing regulation of overseas movement and trade, but they were different measures. Dates matter because they answer different questions: the first stopped Japanese vessels from sailing abroad; the later one barred Portuguese ships from entering Japanese ports.
Nor did the end of red-seal voyages mean that every maritime connection vanished in a single moment. The National Archives reports that Japanese people continued to live in Hội An for several decades after the 1635 ban. It also discusses a later Vietnamese chronicle entry about trading vessels described as Japanese in southern Vietnam in 1679. Such a later record belongs to its own context and does not reverse the earlier prohibition on Japanese departures.
Policy and community therefore moved on different timelines. The shogunate could stop a class of licensed voyages, but people already living abroad had homes, families and business ties. Their lives did not necessarily end when a new order was issued in Japan. This is one reason the history of the Japanese town cannot be reduced to a start date and a ban date.
The years after the restriction also show why it is risky to treat “isolation” as a single switch that turned off all contact. The government changed the terms under which movement and trade could take place. Regional commerce continued through other channels and participants. The story of red-seal ships is specifically about licensed Japanese departures and their political setting, not a claim that every exchange across East Asia stopped in 1635 or 1639.
What exams ask
For Japanese history and world-history questions, connect the authorization system to the trade network. Red-seal licenses were issued by Japanese authorities to selected merchants, who sailed to Southeast Asian ports with goods such as silver and copper. Hội An became an international port in the Nguyễn domain, and Japanese residents formed a community there alongside local people and other traders. The important concept is a network of political permission, commercial exchange and local participation.
Keep the numbers attached to their definitions. The National Archives’ English page describes 130 as ships trading with Vietnam from 1604 to 1639; its Japanese page describes 130 Vietnam-bound voyages over that period. The pages label the figure differently, so don’t turn one unit into the other. A separate 1604–1635 license tally lists 87 for central Vietnam, 56 each for the Philippines and Siam, 44 for Cambodia and 37 for Tonkin. That is a different period and a count of licenses by destination.
Keep the dates distinct as well. The red-seal system is described as established in 1604. The shogunate’s prohibition on Japanese vessels sailing abroad came in 1635. The Portuguese ship ban followed in 1639. When an exam asks why red-seal voyages ended, the relevant date is 1635, rather than 1639.
Finally, treat period place names with care. “Annam,” “Tonkin” and “Cochinchina” came from historical sources and do not always map neatly onto modern borders. Identify the location meant in the specific source. For central Vietnam, Hội An was a major port connected with the Nguyễn lords. That distinction helps explain why “Vietnam” was not one unified political destination throughout this period.
Read next
- Vietnam’s Dynasties and French Rule gives the political background to the Nguyễn domain and the region around Hội An.
- Hội An’s Japanese Bridge and the Lost Japanese Town follows the port community through its most visible landmark.
- Princess Anio and Araki Sōtarō traces another personal connection between Japanese merchants and Nguyễn Vietnam.
- The Tokugawa Shogunate for World History Students explains the government that licensed voyages and later restricted them.
