after the meiji restoration, the arsenal was taken over by the imperial japanese navy, and the area of modern yokosuka was reorganized into uraga town and numerous villages within miura district, kanagawa prefecture. yokosuka village was elevated to town status in 1878 and was made the capital of miura district. in 1889, the yokosuka line railway was opened, connecting yokosuka to yokohama and tokyo. yokosuka was elevated to city status on february 15, 1907. from 1916, oppama in yokosuka was developed as the yokosuka naval air technical arsenal, and many of the combat aircraft subsequently operated by the imperial japanese navy air service were developed or tested at yokosuka. yokosuka naval arsenal also continued to expand in the early 20th century, and its production included battleships such as "yamashiro", and aircraft carriers such as "hiryū" and "shōkaku". smaller warships were constructed at the privately owned uraga dock company. yokosuka naval district was the home port of the ijn 1st fleet.