The process, properly specified
Spares, stores, lubricants and consumables together account for roughly a quarter to a third of a vessel's annual operating cost. Procurement is therefore the largest single lever a technical manager holds — larger than the management fee by an order of magnitude — and it is managed, in a surprising number of fleets, by email.
| Stage | Owner | Control point |
|---|---|---|
| Requisition raised on board | Chief Engineer / Master | Linked to equipment code and PMS job |
| Technical review ashore | Superintendent | Necessity, specification, timing |
| Consolidation | Purchasing | Combine across vessels and ports |
| RFQ | Purchasing | Minimum three quotes above threshold |
| Award | Purchasing + Superintendent | Price, lead time, quality, terms |
| Purchase order | Purchasing | Approved limits enforced |
| Expediting | Purchasing | Delivery vs port rotation |
| Delivery and receipt | Vessel | Quantity, condition, documentation |
| Invoice matching | Accounts | Three-way match: PO, receipt, invoice |
| Performance review | Purchasing | Supplier scorecard |
Two of those stages are routinely skipped. Consolidation — combining requisitions across vessels and delivery ports — is where fleet scale creates real savings. Supplier performance review is where a fleet learns which of its suppliers actually deliver on the quoted lead time.
Where value leaks
Urgent orders. A part needed at the next port carries a premium on price, freight and often customs handling. Most urgency is a planning failure upstream: the PMS knew the job was due, the spare was not staged.
Single-source buying. OEM-only policies are appropriate for some equipment and expensive habit for the rest. The policy should be written down by equipment criticality, not decided per requisition by whoever is under time pressure.
Over-specification. Requisitions written to the maker's part number when a class-approved equivalent exists.
No consolidation. Five vessels calling at the same port in a fortnight, five separate deliveries, five freight charges.
Freight and customs. Frequently 10–20% of the landed cost of spares and rarely tendered separately.
Benchmarking suppliers properly
A supplier scorecard should carry four dimensions, not one:
| Dimension | Metric |
|---|---|
| Price | Index vs fleet average for comparable items |
| Reliability | On-time-in-full delivery rate |
| Quality | Rejection rate, warranty claims |
| Administration | Invoice accuracy, documentation completeness |
A supplier who is 4% cheaper and delivers late 20% of the time is not cheaper. Late spares turn into deferred maintenance, and deferred maintenance turns into PSC deficiencies — structure, machinery and electrical defects made up 11.6% of all Paris MoU deficiencies in 2025.
What procurement software must do
- Requisition from the equipment register, not from free text. Free-text requisitions are the origin of every wrong-part story.
- Enforce approval limits by role and value, with a documented emergency override.
- Consolidate automatically across vessels, ports and time windows.
- Hold a price history by item so you can see whether you are paying more this year.
- Three-way match PO, goods receipt and invoice before payment.
- Track landed cost, including freight, customs and agency charges — not just the item price.
- Score suppliers on all four dimensions above, automatically.
- Work offline on board, because requisitions get raised at sea.
Payment: the overlooked half
Procurement ends when the supplier is paid, and maritime payments are unusually painful: many currencies, many jurisdictions, correspondent banking chains, sanctions screening on every counterparty, and suppliers in ports where settlement is slow. Late payment costs money indirectly — suppliers price payment risk into their quotes, and a fleet with a reputation for slow settlement quietly pays a premium on everything.
Treating payment as part of the procurement process rather than an accounting afterthought is one of the few genuinely underexploited savings in ship management.
A 90-day improvement plan
| Days | Action |
|---|---|
| 0–30 | Categorise 12 months of spend by item class and supplier |
| 0–30 | Identify urgent-order rate and its top five causes |
| 30–60 | Write the OEM vs equivalent policy by equipment criticality |
| 30–60 | Tender freight and customs handling separately |
| 60–90 | Introduce consolidation windows by port cluster |
| 60–90 | Launch supplier scorecards on the four dimensions |
Fleets that do only the first two lines typically find enough to justify the rest.
deficiency data from the Paris MoU Annual Report 2025. Leakage chart is an indicative model for illustration. Reviewed by the Zeaclub Editorial Team, 24 August 2026.
Frequently asked questions
How much of vessel OPEX is procurement?
Spares, stores, lubricants and consumables commonly total 25–35% of daily operating cost, varying with vessel age and segment.
Should we always buy OEM spares?
No — but the decision should follow a written policy based on equipment criticality and class requirements, not on who is raising the requisition.
How do we reduce urgent orders?
Link requisitions to PMS job due dates so spares are staged ahead of the work, and review the urgent-order rate monthly as a KPI in its own right.
Does e-procurement actually save money?
The software does not. The process discipline it enforces does — consolidation, competitive quotation, price history and supplier scoring are where the savings live.