Why was Repulse not modernized to the same standard as Renown before the Second World War?
Short answerShe was later in the reconstruction queue, and war began before the Navy could rebuild or replace her as planned.
NotesThe Royal Navy intended to decide between rebuilding Repulse and replacing her with a new capital ship. Renown's reconstruction came first, with Hood expected to follow before Repulse received comparable attention. Those plans rested on a rearmament timetable that anticipated a later war and a stream of new ships and aircraft entering service. The outbreak in 1939 forced the Navy to retain Repulse before the planned sequence could reach her.