File:German mine laying submarine UC 42. Sunk explosion of its own mines off Ireland on 10 September 1917.JPG
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German_mine_laying_submarine_UC_42._Sunk_explosion_of_its_own_mines_off_Ireland_on_10_September_1917.JPG (639 × 424像素,文件大小:134 KB,MIME类型:image/jpeg)