(b) Reduce the Zeebrugge region and close exits for submarines.
(c) Enter the Baltic and close exits for submarines from the Baltic bases.
(d) Prevent Danish and Dutch territory being used for submarine bases.
(e) Construct and maintain mine barriers about the Heligoland area.
(f) Construct and maintain a mine barrier in the Skagerrack or Kattegat.
(g) Construct and maintain mine barriers in the Zeebrugge region.
(h) Construct and maintain a mine barrier across the North Sea.
(i) Close Dover straits to submarines by a mine barrier and surface patrol.
These matters were discussed by Benson with officers of the British Admiralty, and the methods and the difficulties of carrying them out were considered. Speaking, sometime after the war, of the offensive plans he advocated, Benson said: