Japanese gunboat Sei-Ki launched at Okoska, Japan according to the magazine Mitteilungen aus dem Gebiete des Seewesens 1875 no. 10

An item reported the launching in the presence of the Mikado with general staff at the naval arsenal at Okoska near Yokohama, Japan on 5 May of the Japanese gunboat Sei-Ki. She was the first gunboat there built, Designed by the French engineer Thibaudier. Dimensions 60 x 9.40 x 5 (hold) metres and a displacement of 840 tons. The armament consisted of 1-15 pivot Krupp gun and 3-12cm Krupp guns. Surface condensing engines supplying 700 ihp.