 Another significant facet of the mission was the shogunate’s dispatch of a Japanese warship, the "Kanrin Maru", to accompany the delegation across the Pacific and thereby demonstrate the degree to which Japan had mastered Western navigation techniques and ship technologies barely six years after ending its isolation policy of nearly 250 years.On January 19, 1860, the "Kanrin Maru" set sail from Uraga for San Francisco under the leadership of Captain Katsu Kaishū, with Nakahama "John" Manjiro as the official translator, carrying 96 Japanese men and an American officer, John M. Brooke on board.The overall head of the mission was Admiral (木村喜毅), a high ranking Shogunate official.