This began to be resolved with the 1906 launching of the revolutionary "all big gun" battleship . It shipped a main battery of ten heavy caliber guns, and a smaller secondary battery for self-defense. This leap in heavy offensive armament from a standard four large caliber guns to a main battery of ten made all other battleships obsolete overnight, as the weight of broadside it could unleash, and overwhelming rate of fire a superior number of similar weapons could sustain, could overwhelm any similarly sized warship.