Restrictions on Navigation Told: British Admiralty Announces Rules for Vessels Operating in North Sea: Mine field is Laid: Boats Finding Themselves within Zone after Dark must anchor or take risk.
The British admiralty restrictions on navigation in the northern part of the north sea, in consequence of laying of a great mine field for the purpose of foiling submarines, became operative today and hereafter all shippers in that area must comply with stringent regulations or ignore then at their own peril