The battlecruiser was the brainchild of Admiral Sir John ("Jacky") Fisher, the man who had sponsored the construction of the world's first "all big gun" warship, HMS Dreadnought. He visualised a new breed of warship with the armament of a battleship, but faster, lighter, and less heavily armoured. The first three battlecruisers, the Invincible class, were laid down while Dreadnought was being built in 1906.