Gunboat Diplomacy of a Different Kind: Robert H. Pruyn and Japan’s Purchase of U.S. Warships, 1862–1865

This article examines the handling of a contract between the Shogunate of Japan and private agents in the United States for the construction of three ships of war in 1862. Robert H. Pruyn, the U.S. minister, received the original order and down payment from the Japanese government and assigned the contract to two private citizens in Albany, New York. Over the course of the next three years, complications from the U.S. Civil War and fluctuations in the currency markets made it impossible for the U.S. builders to fulfill the order in full; the Japanese received only one ship. Historians consistently have accused Pruyn of mishandling the contract and of using the funds as investment capital for his own personal gain, but evidence shows that Pruyn was scrupulously careful with the contract and the payment, and that he averted a disastrous result which could have soured U.S.-Japan relations.