If a piece of equipment remains on the ship but is idle for 30 days, what is its IEM status?

In the context of equipment management on a ship, the status of a piece of equipment that remains idle for 30 days is considered "Out of service." Equipment that is not in use for an extended period typically requires evaluation to determine if it remains necessary for operational purposes or if it can be decommissioned or removed.

When equipment is designated as "Out of service," it indicates that it is not currently available for operation and may require maintenance, inspection, or replacement before it can be deemed fit for use again. The classifications of "Active" and "Functional" suggest that the equipment is operational or ready for use, which wouldn't apply after being idle for such a lengthy duration. The term "False" does not accurately describe any equipment status relevant to those outlined in the question.

Thus, in this context, an idle equipment status for 30 days leads to its classification as "Out of service."