Herbert C. Fyfe, Submarine Warfare, Past, Present…
“ When the first submarine torpedo-boat goes into action she will bring us face to face with the most puzzling problem ever met in warfare. She will present the unique spectacle, when used in attack, of a weapon against which there is no defence. You can pit sword against sword, rifle against rifle, cannon against cannon, ironclad against ironclad; you can send torpedo-boat destroyers against torpedo-boats, and destroyers against destroyers, but you can send nothing against the submarine boat, not even itself. You cannot fight submarines with submarines. ”
