Discover Yokosuka 横須賀奥旨
Thursday, August 13, 2026
Historic Uraga Transformed
Long Ago Uraga Castle
Uraga Castle was a mountain castle from the late Sengoku period located in Higashi-Uraga, Yokosuka City, Kanagawa Prefecture. Built on Myojin-yama (approximately 55 meters above sea level) within the grounds of the current Higashi-Kanou Shrine, the castle boasted a strategic location overlooking the entrance to Uraga Port, offering a panoramic view from the Uraga Channel to the Boso Peninsula.
Uraga Castle, used by the Later Hojo clan as a base for controlling the Miura Peninsula, was not merely a military facility, but a complex coastal defense base integrating the monitoring of maritime traffic and the operation of the navy. The castle ruins still retain remnants such as earthworks and dry moats, making it a valuable historical site that conveys the coastal defense strategy of the Sengoku period.
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There are various theories regarding the origin of Uraga Castle, but it is believed that a fort built by the Miura clan originally stood on this site. The Miura clan, who ruled the Miura Peninsula, likely established some kind of military facility in Uraga, a strategic point for maritime traffic, during the Kamakura and Muromachi periods. It is believed that Uraga Castle later developed on this foundation.
The Miura clan was known as a leading naval force in Sagami Province, and Uraga was ideally located for monitoring the Uraga Strait, which connects Tokyo Bay and the Pacific Ocean. This geographical advantage led to the later development of castles by the Hojo clan.
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Uraga Castle is a mountain castle that skillfully utilizes the natural topography of Myojin-yama. Although it is a relatively low mountain with an elevation of approximately 55 meters, the surrounding area is surrounded by the sea and plains, resulting in a significant relative difference in elevation and making it a terrain well-suited for defense.
The mountaintop is a long, narrow ridge running north-south, and the main enclosures were located on this ridge. The eastern side is a steep slope facing Uraga Port, and the western side is also a relatively steep slope, functioning as a natural defensive wall. The routes that attackers could climb were limited, making it a terrain advantageous to the defenders.
Sunday, July 26, 2026
A New Tower Building Being Built Right Next to Yokosuka Chuo Station
Monday, July 20, 2026
Future Expansion of Yokosuka Port
Friday, July 17, 2026
A Foreign Vessel Visit to Uraga -- Way Before the Blackships
Captain Peter Gordon
Background information
Little is known of the personal background of the adventurous Scottish Captain Peter Gordon (fl. 1809 -1841). It is most likely that his father went to the sea as well. Peter became a sailor, and being second mate in the barque Joseph in 1809, was taken prisoner by the French on a voyage from Oporto to England. He escaped in 1810 and went to sea again. He began to trade from Calcutta, and travelled in South East Asia, India, Siberia and the Persian Gulf. He was described as a lively character, and as “inclined to be critical of the system” (other said he was a militant reformer).
Adventure in Japan
In July 1818, Peter entered the Uraga bay in front of the Japanese capital Edo in his brig “Brothers”, with 6 men on board and goods from the British market. His plan was to start trading, and to go ashore to see the shogun’s palace. He also hoped to be allowed to stay in Japan long enough to learn the language. To enter the harbour, he joined the “Brothers” with some junks that were returning home, and thus managed to remain undetected as a foreign vessel until the sun set. At night, the ship drifted near a rock and had to anchor. In the morning, officials had spotted the foreign ship and rowed out to inspect it.
Peter made a formal request to enter the harbour, and also asked to be allowed to return with a cargo, for the purpose of trading. While waiting for the official reply, he was visited by inspectors asking many questions. They were interested in scientific instruments, and so Peter showed them the ones he had on board. The Japanese knew the instruments’ names and uses well; and they observed that instruments were made much better in London than elsewhere. References were made to politics, such as to the return of Napoleon, and to the battle of Waterloo. “Our visitors were much interested in the account of that engagement, and an enumeration of the different states who were there combined against France”, Peter noted.
On the fourth day of his stay in the bay, Peter received a visit from two interpreters. Each of them could speak a little English, and they were able to understand English books by the aid of a Dutch and English dictionary. Nevertheless, all communication was in Dutch.
Influencing scientific progress
Science was a topic of interest. Peter had with him samples of a vaccine against the small pox (vaccinations against small pox had become widespread in South East Asia due to an initiative of Sir Stamford Raffles from Java). Peter offered the interpreters to make the method of vaccination a gift to them. With a heavy heart they had to decline, as receiving gifts was strictly forbidden However, it was the turning point that later let one of the interpreters, 31-year-old Baba Sajuro, to translate a Russian book on small pox vaccination and thus take a first step towards smallpox vaccination in Japan. The concept of immunization was started in Japan in 1849.
While staying in the bay of Uraga, Peter was treated with the greatest kindness and good will. Provisions and anything he might be in need of were offered to him. However, he was given to understand that only two nations, the Dutch and the Chinese, are permitted to trade with Japan, and only at Nagasaki. Thousands of people watch him leave, some made sketches of his ship. Once at sea, many Japanese boats followed the Brothers.
Peter observed: “In the course of that and the following day, there were not less than two thousand persons on board, all of whom were eager to barter for trifles. I had the pleasure of obtaining, amongst other things, some little books and other specimens of the language; and distributed two copies of the Chinese New Testament, together with some Chinese tracts. If inclined to set any value on ideas which can be formed concerning the hearts of men, especially of men accustomed to disguise their feelings as we are informed the Japanese are, I would definitively say that our dismissal was regretted by all.”