Supplying a reinforced fleet at Singapore

Could Singapore or Australia supply the ammunition and replacement guns needed by a reinforced fleet?

Singapore held stocks, and the Royal Navy could move shells and replacement gun barrels around the world in convoys even without local heavy-gun production.

Singapore held ammunition stocks for visiting warships. Additional shells and replacement gun barrels could arrive in protected convoys from overseas industry. The Royal Navy supported the Mediterranean, Eastern, and later British Pacific fleets through long-distance supply systems. A reinforced fleet could therefore operate from Singapore without a local industry manufacturing all its heavy ammunition and guns.