Dutch work on the Hazemeyer system was already linking radar guidance with 40 mm Bofors guns in 1939. Larger fleet exercises would give navies repeated opportunities to observe both the system's value and its defects. The British and French would likely follow the Dutch lead rather than wait for combat to reveal the need. This creates a direct path from prewar fire-control experimentation to stronger layered naval air defence without relying on wartime technology sharing.
Notable Point · 54:32-55:05
Hazemeyer-controlled Bofors guns spread radar-directed air defence
Dutch work on radar-directed 40 mm Bofors mountings gives British and French fleets a prewar route toward more accurate layered air defence.