If the panel took command of HMS Warspite in 1914, how could it keep her in service until 1946?
Short answerHer historical career already achieves most of the goal; the main change would be an early upgrade to 15-inch/50 guns before treaty restrictions.
NotesThe panel immediately notes that HMS Warspite historically survived from the First World War into 1945, so repeating her actual service is enough to preserve the ship. With foreknowledge, Dr. Clarke would use the pre-treaty period to replace her original guns with the proposed 15-inch/50 design. The crew-survival discussion is less reassuring because Warspite repeatedly suffered casualties, especially around exposed and after areas. The practical answer is therefore to follow the ship's proven survival path while using the counterfactual freedom to improve her fighting value.