A 1945 Malayan buffer navy built for delay

What should an autonomous British Malaya build in 1945 if its navy is meant to delay an attacker until Royal Navy help arrives?

Destroyers, torpedo boats, submarines, and probably minelayers would form the core of the delaying force.

The proposed force favours a compact delaying navy over prestige ships. Destroyers and torpedo boats provide fast surface striking power, while submarines and minelayers threaten an approaching fleet and complicate access to defended waters. The mix fits the scenario's purpose of buying time for Royal Navy assistance rather than winning a fleet action alone. Because the premise grants Malaya naval autonomy in 1945, this remains a force-structure counterfactual rather than a description of an actual postwar fleet.