In July 1915 the Prince Charles achieved the first Q-ship success by sinking the U 36. From then until August 1917 Q-ships sunk another ten U-Boats, but after that date there were no more sinkings. Why did they fail to fulfill their early promise?

This article is located in the History of the First World War Volume 6 (REF D522 .H58 1969 V.6).