Demurrage claims are built on Statement of Facts data.
Proteus extracts every event from your SoFs automatically and feeds clean numbers into your laytime calculation. Source-traced. Audit-ready. In seconds, not hours.
Every day uncompensated is $27,000 walking out the door.
Demurrage rates on chemical tankers and dry bulkers run $21,500 to $50,000 a day, pro rata. Across a ten-vessel fleet with 24 voyages each, that's 240 potential claims a year — every one of them a negotiation about hours and minutes recorded in a Statement of Facts.
Most demurrage under-claims aren't because the claim is weak. They're because nobody had time to reconcile five SoFs across three ports, apply the charter party's deduction rules, and submit before the 60-day bar ran out.
The math is simple: if you're missing one $25,000 claim per month because of data-entry bottlenecks, that's $300,000 a year. Proteus costs a small fraction of that.
From SoF PDF to submitted claim — in one workflow.
Proteus is two connected tools. Most customers start with the first, then adopt the second once they see how clean the data is.
Automated Statement of Facts extraction
Upload any SoF — typed, scanned, handwritten, bilingual. Proteus extracts every event with a source citation back to the exact line in the source document. Export to Excel or CSV for your existing laytime tool. Learn more about SoF extraction →
Auto-demurrage calculation
Once your SoF events are in Proteus, the calculator applies the charter party deduction rules — SHINC/SHEX, reversible laytime, weather at half-rate, proration for part cargoes — and produces a source-linked laytime statement ready to submit. Every number traces back to the SoF line that generated it.
You can use just step one and keep your existing calculation workflow. Or you can use both and run the whole voyage inside Proteus.
Built for the SoFs you actually get.
Demurrage analysts don't lose time on clean typed SoFs. They lose time on the weird ones.
Typed tables
From well-run modern ports with structured SoF tables.
Scanned & stamped documents
From Paradip, Kandla, and other ports where the SoF is still pen-and-ink with overlapping signatures and mixed date formats.
Bilingual Chinese/English
From Zhangjiagang, CJK, Lianyungang, and other terminals that issue tables in both languages.
HTML-rendered agent SoFs
From Morocco and other digitized terminals where the SoF is delivered as a structured web export.
Handwritten & mixed date formats
DD/MM/YYYY, MM/DD/YYYY, 09-July-2024, 0800 LT, 10H10. Proteus normalizes them all.
Commingled pages
SoF tables buried inside scans with cover pages, Master's remarks, cargo manifests, and correspondence. Proteus isolates the SoF pages automatically.
Multi-tender NORs
Notices tendered two, three, or four times after rejection or re-inspection. Every tender captured in sequence.
Letters of protest & disputed remarks
Master's and receiver's remarks that contradict each other on the same document, captured side by side for review.
If your analyst can read it, Proteus can extract it.
When the counterparty disputes your numbers, show your working.
About 20% of laytime calculations end in dispute. When they do, you don't argue about memory — you produce the source. Every event Proteus extracts links to the exact line in the source SoF, and the auto-demurrage calculation inherits that provenance all the way to the final statement.
No black-box extraction. No “trust the AI.” Just faster typing, with the source one click away.
Try Proteus on one SoF.
No login. No commitment. One real document from one real voyage. Upload the SoF, see what Proteus extracts, decide if the accuracy meets your standard. If it does, run a full laytime calculation. If it doesn't, you've lost five minutes.
Frequently asked questions
Does Proteus file the demurrage claim for me?
Which charter party forms does Proteus recognize?
How does Proteus handle reversible vs. non-reversible laytime?
What about multi-charterer proration?
Is the 60-day time bar a hard stop?
Is my data confidential?
What does it cost?
Stop letting claims slip past the 60-day bar.
Built by Greywing. Used by operations teams running chemical tanker, dry bulk, and product tanker voyages.