A submarine's net cutter is a device mounted on the bows of some naval submarines to cut through anti-submarine netting.[1]
Some net cutters are powered by explosives.[2]
^NAVY DEPARTMENT OFFICE OF NAVAL INTELLIGENCE (June 1918). "German Submarines in Question and Answer". WASHINGTON GOVERNMENT PRINTING OFFICE. Retrieved 2009-03-12. What is the characteristic appearance of a "U. B." boat? One gun only mounted close before the conning tower. Deck sloping down aft to the stern, where it is awash. A net cutter is mounted at the bow...