sentences:  HMS Syrtis
  
  HMS "Syrtis" was a third-batch S-class submarine built for the Royal Navy during the Second World War.Completed in 1943, "Syrtis" spent most of her career in the Arctic, off Norway, other than a single patrol in the Bay of Biscay,
  
  On her first patrol, she sighted a German submarine, but could not attack it.