16. Leigh Light
Nighttime submarine patrols were transformed by the introduction of the Leigh Light, an airborne searchlight developed to illuminate surfaced submarines lurking under cover of darkness. Mounted on anti-submarine aircraft, this powerful spotlight could suddenly illuminate unsuspecting enemy submarines, allowing aircrews to swiftly target them before they could dive and evade detection. Used effectively alongside radar systems like the ASV Mk. II, the Leigh Light significantly reduced Axis U-boat threats, particularly in the Atlantic theater. Quietly yet decisively, this illuminating innovation closed a critical gap in nighttime anti-submarine warfare, reinforcing Allied dominance over crucial maritime supply routes.
