New British, Danish and German minefields laid according to a report of the American Naval Attaché at Berlin, Germany Nr. R562 dated 15 September 1939

Diary note dated Tuesday 5 September 1939. An item reported that via the press and radio broadcasts information dealing with minefields was collected namely:

-a British minefield in the North Sea with as boundaries latitude 56 North logitude 5 East and the coast;

-a British minefield in the Dover Straits;

-a British minefield in the Firth of North;

-a German minefield across the Little Belt;

-a German minefield across Oresund southwestward from the Falsterbo lighthouse just outside of the Swedish 4-mile limit and

-a Danish minefield across the Great Belt.

Source

National Archives. FDR Presidential Library&Museum Roosevelt PSFC000175. War diary Naval Attaché Berlin, volume 1 (1 September 1939-26 May 1940)