Fire-control backups from duplicate tables to local control

What backup existed if a warship's main fire-control system failed?

Ships could use duplicate tables and control positions or shift to local control at shorter range, with officers observing fall of shot and directing corrections.

Ships could duplicate fire-control tables and positions where space allowed. On a smaller ship, destruction of a well-protected table could mean the vessel already had much more serious damage. At short ranges, guns could use local control without the full long-range calculation system. HMS Exeter's gunnery officer directed a gun from atop its turret, observing fall of shot and shouting corrections.