On 18 October of that year the Battle of Fukuda Bay occurred, when a flotilla of Japanese ships led by Matsura Takanobu attacked a Portuguese carrack.

[3] The Portuguese suffered eight fatalities in the battle that lasted two hours, while the attacking Japanese force lost 70 men with more than 200 injured.

[1] However the bay's unfavourable location, being directly exposed to large waves from the open ocean, encouraged the Portuguese to look for a safer harbour.

[1] The Edo-period surveyor Inō Tadataka described his visit to Fukuda in his diary entry for the 17th day of the 8th month in the 10th year of the Bunka era (11 September 1813 in the Gregorian calendar).

[6] On 1 April 1950 a 0.06 km2 portion of the Ōura neighbourhood[7] (consisting of 25 households and 106 residents) was transferred to neighbouring Nagasaki city.