黑船來航
During the 45 years he served in the U.S. Navy, Buchanan had extensive and worldwide sea duty. He commanded the sloops of war and during the 1840s and the steam frigate in the Perry Expedition to Japan from 1852–1854. In 1845, at the request of the U.S. Secretary of the Navy, he submitted plans to his superiors proposing a naval school which would lead to the creation of the United States Naval Academy that very year; for his efforts, he was appointed the first superintendent of the Naval School—its first name—where he served in 1845–1847. This assignment was followed by notable Mexican–American War service in 1847–1848. From 1859–1861, Buchanan was the commandant of the Washington Navy Yard.