Triple four-inch mounts for torpedo-boat defence

The secondary battery is judged by how quickly it can put shells onto light cruisers, destroyers, and torpedo boats. In the simulation, that volume of fire rapidly overwhelms a lightly protected attacker trying to reach torpedo range. The triple four-inch mount works in its intended anti-surface role, while adaptation for dual-purpose anti-aircraft fire proves difficult. The discussion also considers the unrealized possibility of a triple 4.5-inch Royal Navy mounting during the Second World War. Later threat requirements can expose limits in an otherwise effective weapon.