What a credible Vanguard reserve would require

Where and how could the Royal Navy keep HMS Vanguard in usable reserve?

A sheltered base such as Portland could hold her, but yearly activation, trained reservists, continuing maintenance, and periodic refits would be essential.

Portland Harbour or the Weymouth area offers a plausible sheltered location with suitable naval facilities. Berthing alone would not preserve the battleship's military value. The Navy would have to maintain her systems, cycle her through refits, retain and exercise reservists, and activate the ship regularly. An annual shakedown followed by corrective maintenance would be the minimum credible pattern, making reserve status an active readiness programme rather than cheap storage.