 She participated in the Battle of Miyako Bay, when three Tokugawa Navy warships were dispatched for a surprise attack against Imperial forces.For the battle, Eugene Collache, a French navy officer, was put in command of the "Kaiten No.2", on which were sailing 40 seamen and 30 samurai.The two other ships were the "Kaiten No.1 (Kaiten Maru)" and the .