Some Tribals already carried among the largest radars fitted to World War II destroyers, so radar alone cannot explain the later jump in size. Wartime designers packed the Battle class with short-range anti-aircraft weapons, radars, and their supporting systems. That large hull later made Battle-class ships attractive for radar-picket conversion. The Daring class grew further because radar-picket functions and worldwide operation formed part of its original purpose.
Chapter · 23:41-24:43
Weapons, radar, and the growth of British destroyers
Battle-class size reflected a dense weapon and air-defence fit as well as radar. The larger Daring class was designed from the outset for radar-picket and global duties.