John Blackthorne’s proposal to build a Japanese navy turns his knowledge of English shipbuilding into a possible instrument of Japanese power. Addressing Toranaga with Mariko translating and Yabu listening, he describes a fleet that could be built, equipped, and eventually crewed by Japanese sailors. The offer is strategic, commercial, and personal at once: it promises Toranaga new command of the surrounding seas, while Blackthorne imagines that the arrangement could secure his own return to England and reshape trade. Toranaga is interested, but the proposal ends without approval; its future remains an object of calculation rather than a settled policy.

Background and Strategic Setting

The offer grows out of a world in which control of the sea depends on specialized knowledge as much as on ships. Blackthorne knows that existing charts can be too vague to guide a voyage and that navigators have no reliable way to determine longitude. The rutter offers a practical answer to some of this uncertainty: a pilot’s recorded courses, depths, currents, winds, hazards, harbors, and provisions. Yet such books can contain copying errors or deliberate falsehoods, and their usefulness must ultimately be tested at sea. Portugal and Spain guard their navigational knowledge as state secrets, while their English and Dutch rivals seek it. A navy, in this setting, would require more than hulls: it would depend on experienced pilots, transferable knowledge, trained crews, and the means to supply and maintain ships.

The political setting also makes the proposal consequential. Japanese warfare has adopted firearms, but the established samurai code prizes individual combat and regards guns as dishonorable. Yabu, however, has already imagined chosen samurai trained to fight together with muskets, supported by cannon. A later demonstration of disciplined ranks firing in succession shows how such coordination might stop a sword-and-spear charge. Blackthorne’s naval scheme raises a related question on a larger scale: whether imported technology and organized training can change the balance of military power without simply reproducing older forms of combat. Yabu’s attention to the proposal matters because he has already considered how new weapons might be organized into a force, even while the inherited code remains a source of tension.

The Proposal and Its Terms

Blackthorne begins with the problem of scale. Asked how many ships would be needed to control the seas, he cannot give an exact figure, but he describes England as possessing perhaps 150 ships of the line, vessels built specifically for war. He says that the Queen builds roughly twenty to thirty warships each year, generally through private groups that sell their ships to the Crown. In his account, the Crown pays more than the actual cost to encourage research and new designs. The example closest to him is the Erasmus: an English design built under license in Holland.

From that model, Blackthorne lays out two possible routes. Toranaga could arrange for warships to be built in England, then have them sailed to Japan fitted and armed to his requirements. Alternatively, Blackthorne could attempt to build a vessel in Japan, provided he had carpenters, interpreters, materials, and enough time. He would first need to experiment with a smaller ship, since he had never built one entirely by himself. The distinction is important: importing finished ships might accelerate the creation of a fleet, while local construction could eventually establish Japanese capacity, but neither route is presented as immediate or effortless.

Training is the bridge between acquiring ships and possessing a navy. Blackthorne says English sailing masters could remain in Japanese waters for a year and establish a training program. Given time, Japanese sailors could learn to operate the vessels; in a few years, Toranaga might have a modern navy that Blackthorne claims could be second to none, better than anything Spain or Portugal could field. The assertion is ambitious, but his proposed method is specific: bring in the expertise, train local crews, and build an institution able to use the ships rather than treating them as isolated trophies.

Timetable, Risk, and Scale

Blackthorne gives Toranaga a sequence of costs and delays. He estimates two years to sail home, two years to build one or more ships, and another two years to sail back. Half the cost would be paid in advance, with the remainder due on delivery. These terms expose the distance between the immediate political crisis and the long horizon of naval construction: the plan demands money before its results can be seen, and its first ships cannot arrive quickly.

For the longer program, Blackthorne proposes sending out a flotilla of five ships at a time. He warns that at least one ship might be lost to storm or tempest, or through interference by Spain and Portugal, which he expects to oppose the project. Even with those hazards, he estimates that Toranaga could possess fifteen to twenty ships in ten years. Over ten to fifteen years, England might supply thirty modern warships, after which Japan could perhaps build replacements locally. The numbers are projections rather than guarantees; weather, hostile action, construction, and the training of crews all stand between the offer and the fleet he describes.

Reception and Significance

Toranaga’s interest rises as Blackthorne explains the plan, and Yabu is equally engaged. Yet the conversation is mediated throughout. Toranaga asks questions through Mariko, and at one point observes that it would be better to speak directly with Blackthorne. He makes clear that this is not a criticism of her interpreting, but a recognition that political discussion would be easier without an intermediary. The language barrier is therefore not incidental: it shapes who can ask, answer, and assess the proposal, even in a room where the practical possibilities are being weighed closely.

Blackthorne privately sees more in the scheme than he presents as a formal offer. He imagines an alliance linking Japanese sea power to English shipbuilding and naval expertise, with the two countries pushing Portuguese and Spanish influence out of the surrounding waters. He also foresees English advantage in the Japan–China silk trade and personal wealth and honor for himself. Those ambitions help explain the energy behind his presentation, but they are not the terms Toranaga accepts: the ruler has made no commitment to an alliance or to the projected trade. After Blackthorne presses for an answer, Toranaga says through Mariko that he will consider the plan carefully and asks for patience. He also indicates that Blackthorne will receive help, without specifying what form it will take. The scene closes on delay, not refusal or agreement. Its central possibility remains suspended between Blackthorne’s confident calculations and Toranaga’s deliberate silence.