Put it at the center of a clock. Then Great Britain is at five and six o’clock, and Ireland is at seven o’clock. Norway is due east, at three o’clock. Denmark is just south of Norway, at four o’clock, and at the base of Denmark, where it plugs into Germany, is Wilhelmshaven. France, home to so many U-boats, is far, far to the south—completely out of the picture.