Unrestricted submarine warfare resumed
The German Kaiser declares that unrestricted submarine warfare is to resume. This meant that German submarines would target ships carrying cargo and tankers without warning, not just battle ships. At least thirteen ships are sunk by German submarines off the coast of Wales during 1917 and 1918. Examples include the steamship ‘Cymrian’ that is torpedoed near Porthcawl in August resulting in the loss of 10 crew, the steamship ‘Adela’ that is torpedoed off the coast of Anglesey in December leading to the death of 24 crew members.