Laytime, Demurrage, Dispatch & Port Delay Cost Tool

NOR • Laytime Clock • Reversible / Separate Laytime • SHEX / Weather / Shifting / Breakdown Factors • Demurrage • Despatch / Dispatch • Statement of Facts • Port Delay Economics

Laytime, Demurrage, Dispatch & Port Delay Cost Tool

Turn a port call or voyage-charter Statement of Facts into a transparent time-and-money calculation. Simple mode estimates laytime used, demurrage or despatch, and the gap between contractual settlement and vessel delay economics. Advanced mode runs a chronological event ledger with separate laytime and demurrage counting factors, reversible or separate load/discharge pools, NOR/clock controls, disputed-time visibility, expected claim recovery and full port-delay cost analysis.

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Fast laytime / demurrage screen: 10 inputs.Simple mode starts after the laytime clock has validly begun. Enter total elapsed time from laytime commencement to cargo completion and the hours that do not count under the charter. Advanced mode is for NOR timing, event-by-event exceptions and different rules once the vessel is on demurrage.

ClockAllowed vs counted laytime

SettlementDemurrage or despatch

EconomicsPort-delay cost vs recovery

Quick Voyage-Charter Port Calculation

Allowed laytimehours.

Elapsed time after laytime startshours from laytime commencement to cargo completion.

Excluded / non-counting timehours excluded by the charter while still on laytime.

Demurrage ratecurrency/day.

Despatch / dispatch ratecurrency/day.

Despatchable saved-time factor100% for all entered saved laytime; reduce if only part is contractually despatchable.

Vessel opportunity valuecurrency/day of non-productive port delay.

Incremental port delay costcurrency/day for extra agency, services, consumables or port exposure.

Expected demurrage recovery% expected to be collected after claim adjustments/dispute risk.

Non-productive share of elapsed port time% used only for economic port-delay cost, not laytime counting.

Charter / Laytime Basis

Laytime arrangementDetermines whether unused load laytime can offset discharge time.

Load-port laytime allowancehours.

Discharge-port laytime allowancehours.

Demurrage ratecurrency/day.

Despatch / dispatch ratecurrency/day.

Despatch basis

Despatchable saved-hours overrideUsed only when override basis is selected.

Expected demurrage recoveryExpected cash collection after deductions/dispute/credit risk.

Claim settlement delaymonths, used only for recovery present value.

Annual discount rate% for expected demurrage recovery PV.

NOR / Laytime Clock

The tool does not determine whether NOR is legally valid. Enter the clock start you consider effective after applying the charterparty, NOR validity, office-hour/notice-time provisions and any waiver/acceptance issue.

NOR tendered

Notice time / turn timehours added to NOR for the derived start.

Laytime clock start overrideLeave blank to use NOR + notice hours.

NOR / clock status

Statement of Facts / Time-Counting Ledger

Enter non-overlapping chronological periods. “Laytime factor” controls how much of each hour counts before laytime expires. “Demurrage factor” separately controls time after the vessel is on demurrage. This lets you model specific exceptions that do or do not continue after laytime expires.

Use	Pool	Event / SOF entry	Category	Start	End	Laytime factor %	Demurrage factor %	Claim status	Delay responsibility	Notes

Port Delay Economics

Vessel opportunity / time valuecurrency/day of non-productive port delay.

Incremental port delay costcurrency/day applied to non-productive event hours.

Other fixed delay costcurrency, optional.

Laytime / Claim Checks

NOR and arrived-ship position reviewedContract destination, readiness, office-hour wording, WIBON/WIPON or similar provisions are checked against the actual charter. Statement of Facts reconciledMaster/agent/terminal times and supporting records are reconciled before applying counting factors. Laytime definition / rate basis verifiedAllowed time, reversible/separate treatment, cargo-rate conversion and rounding conventions are confirmed. SHEX / SHINC / holiday treatment verifiedWeekend/holiday periods and “unless used” wording are applied from the charter rather than assumed. Weather / strike / shifting exceptions verifiedCausation and clause-specific interruption/exception wording are reflected in the row factors. Post-laytime / demurrage exceptions verifiedRows use a separate demurrage factor where an exception continues or ceases after laytime expires. Despatch basis confirmedAll-time-saved, working-time-saved or no-despatch wording is reflected in the selected calculation basis. Claim time bar / documents checkedInvoice, laytime statement, SOF, NOR and required supporting documents will be submitted within the contractual time bar.

Contract boundary: this tool performs arithmetic from the counting rules you enter. It does not decide whether NOR was valid, whether a vessel was an arrived ship, whether an exception applies, whether a charterer caused a delay, whether “once on demurrage” is displaced by express wording, or whether despatch/detention/damages are legally recoverable. Those questions turn on the actual charterparty, facts and governing law.

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