Japanese minesweeper W-7

Three Japanese minesweepers have been named No.7 minesweeper (第七号掃海艇):


 * JAPANESE MINESWEEPER No. 7, ex-JAPANESE DESTROYER Isonami, a Kamikaze-class destroyer (1905) of the Imperial Japanese Navy in World War I
 * JAPANESE MINESWEEPER No. 7, ex-JAPANESE DESTROYER Umikaze, a Umikaze-class destroyer of the Imperial Japanese Navy in World War I
 * JAPANESE MINESWEEPER No. 7, lead ship of No.7-class minesweeper (1938) of the Imperial Japanese Navy in World War II