Japanese minesweeper No. 9

Three Japanese minesweepers have been named No.9 minesweeper (第九号掃海艇):


 * JAPANESE MINESWEEPER No. 9, ex-JAPANESE DESTROYER Ayanami, a of the Imperial Japanese Navy in World War I
 * JAPANESE MINESWEEPER No. 9, ex-JAPANESE DESTROYER Nara, a of the Imperial Japanese Navy in World War I
 * JAPANESE MINESWEEPER No. 9, a of the Imperial Japanese Navy in World War II