Spare Parts Strategy: A Simple Approach to Reduce Downtime

What is a Spare Parts Strategy?

A spare parts strategy is a basic plan for what to keep in stock and how to reorder. The goal is simple: avoid delays when a part fails.

In maritime operations, waiting for parts can cause downtime, extra costs, and schedule issues. A clear spare parts plan helps prevent this.

Why does it matter?

Even small components can stop a system. If the right part is not available, repairs take longer. A good strategy helps you:

• reduce “parts waiting” downtime
• avoid urgent shipping costs
• keep maintenance more predictable

3 simple steps for a better spare parts strategy

1) Focus on critical parts first

Not every item needs the same attention. Start by identifying critical equipment and critical parts—the ones that can stop operations or create safety risk.

A simple grouping:

• Critical: can cause downtime / safety risk
• Important: affects performance but may be manageable short-term
• Routine: easy to source, low risk

2) Understand lead time (how long it takes to get parts)

Lead time is often the biggest problem. Some parts arrive quickly, others take weeks. Lead time can also change due to:

• supplier availability
• customs and shipping delays
• required certificates or approvals

For critical items, you should plan stock based on the real lead time—not just “best case.”

3) Set basic stock and reorder rules

You do not need complex formulas to start. For critical items, define:

• minimum stock level (how many you must always have)
• reorder point (when to place a new order)

Also, make sure part numbers and revisions are correct. Having the wrong revision is almost the same as having no part.

Quick checklist (8 items)

1. Do we have a list of critical systems?
2. Do we know the most common failure parts?
3. Do we know lead times for key parts?
4. Do we store minimum stock for critical items?
5. Are part numbers and revisions confirmed?
6. Do we have approved alternates (if needed)?
7. Are documents and certificates easy to find?
8. Do we review stock levels regularly?
   

Conclusion

A spare parts strategy does not need to be complicated. Start small: focus on critical parts, check lead times, and set minimum stock rules. This basic approach can reduce downtime and improve operational stability.