You run pipelay jobs, heavy lift campaigns, subsea installations, and decommissioning projects with crane barges, tugs, and dive support vessels working simultaneously. Each vessel generates charges, subcontractor POs, and EPC milestone invoices that need to reconcile across every phase. Base connects your project costing, subcontractor AP, and accounting so your ops team and your finance team work from the same project record.
Your project manager tracks charges in one spreadsheet. Your AP lead tracks subcontractor invoices in another. Your finance team reconciles both against the EPC contract in a third. When the crane barge moves to a new phase, someone copies 47 line items by hand. The version your principal sees is always one email behind the version your team is working from.
in project and port call charges tracked
jobs managed across the platform
purchase orders, RFQ to payment
currencies for multinational billing
Anonymized because we protect client relationships. Grounded because every quote is real.
Define the project scope, assign crane barges, tugs, and support vessels. Set up phases: mobilization, transit, installation, demob. Each phase becomes a job with its own charge codes.
Issue purchase orders for equipment, specialist crew, materials, and port services. Each PO links to the job and tracks spend against the approved amount.
Equipment day rates, crew overtime, fuel, provisions, port fees. Every charge maps to a vessel, a phase, and a cost center. Your project total updates live.
When a sub sends an invoice, Base matches each line item to the PO it was raised against. Mismatches flag before approval. Your AP automation captures the invoice and routes it.
Generate milestone invoices from the charges already on the record. Your EPC sees the same cost breakdown you do. Every charge links to a PO, a vessel, and a phase.
See margin by vessel, by phase, and by charge type. Compare actuals against the original EPC contract. QuickBooks or Xero sync keeps your books current throughout.
Marine construction software manages the financial and operational complexity of offshore installation, pipelay, heavy lift, dredging, and decommissioning projects. It replaces the spreadsheet-and-email stack with a shared record your whole team reads from, across every vessel, every subcontractor, and every project phase. Base handles the layer between your EPC contracts and your accounting system: RFQ to PO, PO to invoice, invoice to payment.
Your subcontractors send invoices. Base matches each line item to the PO it was raised against, flags mismatches, and routes the approval. When your EPC asks why charge #47 exists, you show the PO, the invoice, and the approval trail in one screen. Your vendor records track every sub across every project.
Base handles 87 custom charge codes at one marine contractor. Your WBS structure, phase IDs, and cost categories import on day one. Custom fields map to whatever project taxonomy you already use.
They do not have to. AP matching works from the invoices your subs already send you. No vendor portal required. No training. No change to their workflow.
Start with your next project. Import your charge codes, vessel list, and vendor records. Run the first project alongside your existing process. Bring historical jobs over later when you are ready.
Walk through a real marine construction project using your charge codes, your PO structure, and your EPC billing format. We will show you how subcontractor invoices match to POs automatically and how project profitability rolls up by vessel and phase.
“We used to spend the first week of every month reconciling subcontractor invoices against three different spreadsheets. Now the match happens when the invoice arrives.”
– Finance Director, marine construction contractor
Marine construction teams that run their project financials in Base typically close their books five days faster within the first quarter because charges, POs, and invoices share the same project record.