Japanese forces seize and confiscate the Erasmus

The seizure of the Erasmus at Anjiro strips Blackthorne of control of his ship and places its cargo—and the dangerous navigation books in its hold—in Japanese hands. The takeover begins with the vessel already anchored and watched, proceeds through sealed doors and confiscated keys, and culminates in Yabu’s declaration that the ship and everything aboard it are forfeit. What appears to be a capture of an unfamiliar foreign vessel is also a struggle over the knowledge that could open distant sea routes and expose the crew’s past.

A ship at anchor, and knowledge below deck

The Erasmus lies in good water about fifty yards from shore, secured by three bow cables. Japanese men are aboard, but none of Blackthorne’s crew is in sight. Around the crescent harbor, fishing boats move between the waterfront and the sea; the ship itself, anchored apart from shore, has already become the focus of the village’s attention. Blackthorne sees the ship from a small boat and approaches it to find samurai lining its gunwales.

The contrast between the vessel and its new guards is immediate. The samurai wear two swords, and their distinctive hair marks them as members of a status-bound warrior class. Blackthorne, still shaken by a killing he has just witnessed in the street, boards through a scene of bows and apparent friendliness. Yet the entrances below deck are sealed with red silk and notices. A guard refuses to let him pass. The formal welcome on deck cannot restore the access that matters most: the way into the ship’s interior.

For Blackthorne, that prohibition turns the boarding into a race against discovery. He wants to reach the rutters—the navigation books that are both practical tools and potential evidence against the crew. His own book records dates, places, and the spoils and deaths of the crew’s raids in the Americas and Spanish Africa, including churches sacked and towns and shipping burned. The other is a Portuguese rutter, which Blackthorne says was bought from a Portuguese traitor. He believes that, under Portuguese law, a foreigner found carrying one could be executed, and that a ship found with such a book aboard could be burned with everyone on it. He tries to explain that it is his ship and that he wants to go below, but the repeated prohibition stands; he begins to force a door rather than surrender access to what lies within.

Yabu declares the ship confiscated

Yabu arrives after hurrying from Yedo, more than a hundred miles away. Omi explains that he has sealed the ship until Yabu can inspect it in person. The holds contain crates and bales, and Omi hands over the keys he has confiscated. The locks and keys make the takeover concrete: the Japanese authorities are not merely watching the Erasmus or questioning its crew; they have secured the vessel and its cargo before its lord has even completed his inspection.

Yabu’s decision follows from what he understands the ship to be. He calls it alien, non-Portuguese, and a pirate vessel, and announces that it is confiscated with all it contains. The declaration converts the ship from a possible curiosity or gift from the gods into a prize claimed by authority. Its cargo is included in the seizure, while the pirate designation supplies Yabu’s stated grounds for the confiscation and for sentencing the pirates.

The confrontation shifts when Blackthorne’s captain suddenly leaps at a priest, tears the wooden crucifix from the man’s belt, breaks it, and throws the pieces down. He then shouts and kneels, bowing low to Yabu as the guards rush forward with raised swords. Yabu is astonished by the breach of manners and orders the guards not to kill him. The episode does not restore Blackthorne’s command or reopen the sealed ship; it does, however, interrupt an immediate move toward violence. The foreign captain’s uncontrolled act is followed by submission, leaving Yabu with a living prisoner and a confiscated vessel to consider.

Why the rutters matter

The seizure is consequential because the Erasmus carries knowledge that cannot be replaced by a general chart. Blackthorne reflects that existing charts are too vague to make many voyages safe and that there is no way to determine longitude. A rutter is more precise: it records compass courses between ports and headlands, soundings, water depth and color, seabed, winds and currents, storm and fair-weather patterns, places to careen or take on water, and the locations of friends, enemies, shoals, reefs, tides, and havens. Its practical value lies in the recorded route out and the route home—the accumulated observations of a pilot who has made the passage.

That knowledge is scarce and politically guarded. English, Dutch, and French pilots have rutters for their own waters, but Portugal and Spain control much of the recorded knowledge of the wider world’s sea routes. Their books concerning the New World, the Strait of Magellan, the Cape of Good Hope, and the passages onward to Asia are treated as national treasures and pursued by their enemies. Nor is a rutter automatically trustworthy: errors can enter through the pilot, the copyist, the rare printer, or the translator, and some may be deliberate. A pilot cannot be certain of a route until he has sailed it himself. Confiscating the Erasmus therefore gives its captors possession of both a ship and a set of potentially valuable, potentially incriminating claims about how distant waters can be crossed.

The book’s later maritime episodes sharpen this strategic context. On a voyage in a Japanese galley, Rodrigues takes the route from the coast of Izu out toward a landfall two hundred miles away; he explains that hugging the coast would be safer but slower, and that Japanese pilots fear taking a great lord out of sight of land. The Taikō’s law requiring Portuguese pilots aboard the few Japanese ocean-going ships reflects that dependence. Later, when a Portuguese frigate bears down on the galley near a harbor mouth, Blackthorne weighs its speed against the galley’s maneuverability and the narrow sea room available to each. These episodes are not part of the original seizure, but they show why control of ships, pilots, routes, and harbor access carries consequences beyond the shoreline where the Erasmus is taken.

Consequences and significance

At Anjiro, Blackthorne’s claim of ownership proves no match for the guards, seals, and confiscated keys. The ship remains physically present, but its commander cannot enter the spaces below deck or protect the records on which his crew’s safety may depend. Yabu’s order settles who claims the vessel, while the protected cargo and hidden rutters leave open what its captors may discover about its voyages and the European contest for navigation.

The seizure thus joins maritime power to political and personal danger. A vessel at anchor can be immobilized by authority on shore; a sealed door can matter as much as a raised sword when essential knowledge is locked behind it. For Blackthorne, the Erasmus is simultaneously his command, the means by which its crew crossed oceans, and the repository of evidence that could condemn them. Its confiscation makes the ship a Japanese prize, but the books aboard ensure that the prize carries risks and possibilities its new possessors may not yet understand.