WEAPONS USING THIS CONCEPT 5 systems Naval Mines 1 limpet mine 62 ▸ Naval Guns 3 8 inch Mk. VI railway gun 45 ▸ RML 17.72 inch gun 29 ▸ 11-inch M1877 gun 23 ▸ Torpedoes 1 Brennan torpedo 44 ▸