Key takeaways
- Shipbuilding AP automation must code every invoice to a specific hull, work package and GL account to track program profitability across vessels in the yard at the same time.
- Requirements extend beyond three-way matching to include contract modification tracking, supplier documentation, milestone payments on long-lead equipment, and approval routing that changes by build stage.
- Government and defense shipbuilding contracts require cost segregation between direct and indirect charges, often to DCAA audit documentation standards.
- Project-aware AP platforms fit shipyard workflows by supporting line-item matching to work packages, approval routing by program and build stage, and real-time cost reporting by hull.
- Vergo brings the same discipline to card spend and reimbursements, proposing the coding by inference from your accounting structure so transactions are coded to the correct hull and work package on first sight.
Where should you go next?
- Learn more about Vergo AP Invoice Automation
- Learn more about Vergo Expense Management
- Learn more about Vergo Employee Reimbursements
What AP automation means for shipbuilding companies
Accounts payable automation in shipbuilding is the digitized capture, coding, approval, and routing of vendor invoices across every hull in the yard. Unlike general manufacturing, shipbuilding invoices cannot simply be expensed to a department — every cost must be traced to a specific hull, work package or work order. Vergo proposes the coding by inference from your own accounting structure and history, so new vendors are coded to the correct hull and work package on first sight with no rule library to build. Shipyards typically build several hulls at once, each with its own material suppliers, marine systems vendors, engineering firms and outside service providers. An invoice for marine-grade steel plate, specialty coatings or propulsion components must be coded to the correct hull number and work package before it can be approved. Where government or defense contracts are involved — such as Navy or Coast Guard programs under cost-plus or fixed-price contracts — AP automation must also support segregation between direct and indirect charges, often in line with DCAA audit requirements.
Why AP automation is especially complex in shipbuilding
Shipbuilding programs run for months or years, so a single vessel can generate thousands of invoices from hundreds of vendors before delivery. Manual AP at this scale creates serious operational risk. Hull-level tracking gaps let invoices coded to the wrong vessel misstate program margins and distort estimate-at-completion forecasts. Vendors frequently bill against contract modifications and engineering changes, and without matching to the approved modification, duplicate or overbilled invoices pass through undetected. Marine systems vendors and service providers often must supply insurance certificates, material certifications or test reports before payment, and AP systems that don't track those documents create exposure. A hull moves through design, block fabrication, erection, outfitting, and sea trials, with approval authority often changing by stage. Long-lead equipment such as main engines and reduction gears is frequently paid in milestones, so AP must release payments only when a defined milestone is met. For a shipyard controller, standard three-way matching is necessary but not sufficient.
A practical example
Before proper AP automation, a mid-size shipyard building two Coast Guard cutters receives 120 invoices in a single week from steel mills, electrical suppliers and marine systems vendors. AP staff key each invoice into the ERP, often missing the hull number or work package. Month-end close requires days of reclassification, and the controller cannot trust cost reports by hull until corrections are made. With project-aware AP automation, the yard captures invoices digitally and matches each line to purchase orders coded by hull and work package. Invoices outside approved PO tolerances are flagged and routed to the program engineer before reaching accounting. The controller sees cost by vessel in real time without reclassification. A defense shipbuilder on a cost-plus contract tags each invoice line as direct or indirect, flags any indirect charge billed to a hull, and retains full documentation ready for DCAA review.
How modern shipbuilding teams handle AP automation
Shipbuilders increasingly rely on project-aware AP platforms rather than generic accounts payable tools. The distinction matters: these platforms are built around hull and work package structures, line-level PO matching, supplier documentation tracking and configurable approval workflows — all of which align with how shipyards actually run. They recognize that shipbuilding invoices must be matched not only to purchase orders but also to hull numbers, work packages and contract line items. They support approval routing that adapts as vessels move from design through fabrication, outfitting and trials. They track milestone terms and supporting documentation before invoices are released for payment, supporting government contract audit requirements.
How Vergo handles this
Vergo is an AI-native, card-agnostic expense management platform that brings the same discipline to card spend, employee reimbursements, and AP invoices. All three run through one coding model — same coding, same review, one reconciliation — while payment stays on the rails you already use. Vergo proposes the coding by inference from your own accounting structure and history, so new vendors are coded to the correct hull and work package on first sight with no rule library to build. Every coding shows why it was chosen, so a reviewer confirms in seconds instead of re-coding by hand. Approval workflows are optional and fit how you already control spend: route by GL account, by amount, or by project — or skip approval flows entirely and let policy flags catch only what breaks a rule. Transactions are ready to code the moment they happen, and employees handle everything by text message with no app to download. Vergo integrates with ERPs shipyards run, including Deltek Costpoint, Infor LN, IFS and Acumatica, and connecting your existing cards involves no card applications, no re-issuing and no banking change.
Related questions
Frequently Asked Questions
Why can't shipbuilding companies use standard AP automation software?
Standard AP software is built around department-level or GL-level coding. Shipbuilding requires invoice costs tied to specific hull numbers, work packages and contract line items. Without that layer, invoices are approved and paid without accurate program-level visibility — making estimate-at-completion forecasting and contract reporting unreliable.
How does three-way matching work in shipbuilding AP?
Three-way matching in shipbuilding confirms that a vendor invoice aligns with an approved purchase order and a documented material receipt or service confirmation — all coded to the same hull and work package. Discrepancies in quantity, price or coding trigger an exception workflow before the invoice advances to payment approval.
How should a shipbuilding controller handle milestone payments in AP automation?
Milestone terms on long-lead equipment should be set up at the purchase order level, so AP automation knows which milestone each invoice bills against. The system should track cumulative amounts billed per vendor and per hull, and require evidence that the milestone is met — factory acceptance testing, for example — before the invoice is released for payment.
What is DCAA compliance and how does it affect AP automation for defense shipbuilders?
DCAA (Defense Contract Audit Agency) compliance requires that all costs billed to government contracts be allowable, allocable, and properly documented. AP automation must segregate direct from indirect costs, retain supporting documentation for every invoice, and produce an audit trail linking each charge to a contract line item and approved purchase order.
How does AP automation handle contract modifications in shipbuilding?
AP automation should match incoming vendor invoices against approved contract modifications in real time. If a vendor bills for work tied to a pending or unapproved modification, the invoice should be flagged and routed to the program manager before coding. This prevents overbilling and ensures contract value is never exceeded without explicit approval.
What ERP integrations matter most for shipbuilding AP automation?
Shipbuilders typically run ERPs such as Deltek Costpoint, Infor LN, IFS, SAP or Acumatica for program accounting. AP automation needs native, two-way integration with these systems so invoice coding, approval status and payment records sync without manual re-entry. Vergo integrates with each of them, posting coded transactions to the hull and work package structure you already use.
