Beyond simply holding a spare part on board, what additional factor should a critical equipment spares policy account for?

A. Spares criticality only applies to engine room equipment, never to bridge or deck equipment

B. The realistic lead time to obtain a replacement if the on-board spare is used, is defective, or does not fit — for genuinely critical equipment, a spares policy that holds one spare but has no plan for what happens if that spare itself is needed elsewhere or proves faulty leaves the same single point of failure the redundancy was meant to avoid

C. Spares policy should be identical regardless of how remote the vessel's trading pattern is from a port with replacement parts available

D. Lead time is irrelevant once a spare is held on board, since the spare itself provides complete protection against any failure

A. A PMS eliminates the need for any reactive/breakdown maintenance once fully implemented

B. To ensure equipment is maintained at intervals based on manufacturer recommendation, class/statutory requirement, and operational criticality before it fails, shifting maintenance from purely reactive (fix it when it breaks) to proactive — with the added benefit of providing a documented, auditable history of what has been done and when

C. The PMS exists purely to generate paperwork for class surveys, with no real operational safety function

D. A PMS is only relevant to engine room equipment and has no application to deck or bridge equipment

A. All equipment should receive identical maintenance treatment regardless of its function or consequence of failure, for simplicity

B. Criticality assessment is only relevant to DP vessels and has no application to conventional vessels

C. Equipment is assessed for criticality based on the consequence of its failure (safety, environmental, or operational impact) and how quickly that consequence would materialise — safety-critical equipment with no redundancy (e.g. steering gear) warrants tighter maintenance intervals and guaranteed spares availability compared to equipment whose failure has minimal or easily-managed consequence

D. Criticality is determined solely by the original purchase cost of the equipment, not its function or failure consequence