How did the Royal Navy supply its forces after Singapore fell?
Short answerIt withdrew to Ceylon, adapted additional support points, and used tankers to sustain the Eastern Fleet.
NotesLosing a forward hub was serious but not identical to losing all sustainment capacity. The Eastern Fleet withdrew to Ceylon and used adapted support points and tankers. Ships could still receive food, stores, maintenance, and fuel at the remaining bases. Their operating geography and options nevertheless narrowed sharply once Singapore was gone.