土方歲三
The Imperial Navy reached the harbor of Miyako on March 20, but anticipating the arrival of the Imperial ships, the Ezo rebels organized a daring plan to seize the "Kōtetsu". Led by Shinsengumi commander Hijikata Toshizō, three warships were dispatched for a surprise attack, in what is known as the Battle of Miyako Bay. The battle ended in failure for the Tokugawa side, owing to bad weather, engine trouble and the decisive use of a Gatling gun by Imperial troops against samurai boarding parties.