WW1 Royal Navy HMS Birmingham Sinking German Submarine U15 Postcard

For sale is a WW1 Royal Navy HMS Birmingham Sinking German Submarine U15 Postcard which is in great condition and in-posted. This post card was produced by the United States to boost moral. 

  The postcard states: “ sinking of the German submarine U15. The first shot from HMS Birmingham destroyed her periscope by which her crew soar above the water. The second shot sent her to doom”.    SM U-15 was one of the three Type U 13 gasoline-powered U-boats produced by the German Empire for the Imperial German Navy. On 9 August 1914, U-15 became the first U-boat loss to an enemy warship after it was rammed by British light cruiser HMS Birmingham.   Constructed by Kaiserliche Werft Danzig, U-15 was ordered on 23 February 1909 and was commissioned three years later on 7 July 1912. The boat left port for its first patrol on 1 August 1914, but on 9 August, U-15 was forced to lie stopped on the surface off the coast of Fair Isle, in Shetland, Scotland, after its engines had failed.   While stranded on the surface, the British warship HMS Birmingham spotted the boat through a thick fog and could hear hammering from inside the boat as the crew tried to repair the damaged engines. The Birmingham's Captain Arthur Duff ordered his crew to fire on the U-boat, but missed. As U-15 attempted to dive to avoid the attack, Duff ordered for his ship to ram the submarine at full speed, cutting it in half and killing all 23 members of its crew.   This will be sent via Royal Mail 1st class signed for and dispatched within two working days.