A fifteen-gun Dreadnought with centreline triple turrets

A more ambitious Dreadnought could have drawn on heavy-gun and turret designs already being developed by British industry. Vickers had a triple-turret design associated with a 14-inch gun, and reducing its calibre would have been easier than enlarging a mounting designed for a smaller weapon. Without treaty displacement limits, some excess turret weight could be accommodated by building a larger hull. One counterfactual places two triple turrets forward, two aft, and a fifth amidships for fifteen guns. Centreline triples would remove the need for wing turrets and avoid the vertically stacked Dread Lantern arrangement. A longer, relatively narrower hull is estimated here at 22-23 knots on the same power. The proposal depended on accepting more developmental risk than navies were then willing to take.