What occupies space reserved under an 'equipped for but not with' procurement plan?
Short answerIt can remain lightly used by removable facilities, such as the Type 45 gym in space reserved for additional VLS cells.
NotesA ship built 'for but not with' a system carries the space, structure and service routes needed for a later fit. That volume does not have to contain a permanent substitute that would obstruct installation. On Type 45 destroyers, an extra gym occupies reserved vertical-launch space. The temporary equipment can be removed when funding and hardware arrive, reducing the disruption of a future upgrade.