Protecting deck-edge lifts and moving aircraft weapons

How could an armoured carrier protect a deck-edge lift, and did aircraft share lifts with ammunition?

Use armoured shutters for the opening and separate ammunition lifts, with some weapons fitted to aircraft in the hangar.

A folding armour plate over the lift would be operationally cumbersome because every movement would require another opening and closing cycle. British designers considered armoured shutters across the hangar opening instead. Ammunition normally used dedicated lifts, while torpedoes could be fitted in the hangar and have their final safeties removed on the flight deck. Protection of the opening and the safe flow of weapons to aircraft were therefore separate design problems.