Live demo · Gasoil / tanker BPVoy 4

MT EUROPA STAR · Fos-sur-Mer, FranceSingapore

BIMCO form: bpvoy_4 · Cargo: Gasoil (85000 MT) · Charterer: BP Singapore Pte Ltd.

Why this case?

BPVoy 4 form com strict 30-day time bar (vs Asbatankvoy 60d, Shellvoy 90d). Engine detecta forma + alerta sobre janela apertada.

Para BP, Shell, Equinor, refinarias com tanker portfolio BPVoy/Shellvoy.

Engine verdict

$38,666.667despatch

Owner invoiced $58,000.00 · $96,666.667 recoverable by the charterer.

Laytime allowed

84 h

Laytime used

26.00 h

Delta

-58.00 h

Discrepancy

$96,667

Statement of Facts events (7)

Extracted from the SoF PDF by Claude Sonnet 4.6 + Mistral OCR. Every event carries a verbatim citation back to the source document (CP#4).

  1. 01
    NOR_TENDEREDMon, 20 Apr 2026 08:00:00 GMT· Fos OPL
  2. 02
    NOR_ACCEPTEDMon, 20 Apr 2026 08:30:00 GMT· Fos OPL
  3. 03
    FREE_PRATIQUE_GRANTEDMon, 20 Apr 2026 09:00:00 GMT· Fos OPL
  4. 04
    BERTHEDTue, 21 Apr 2026 06:00:00 GMT· Berth 12 — Total Terminal
  5. 05
    LOADING_STARTTue, 21 Apr 2026 08:00:00 GMT· Berth 12
  6. 06
    LOADING_COMPLETEWed, 22 Apr 2026 10:00:00 GMT· Berth 12
  7. 07
    COBWed, 22 Apr 2026 11:00:00 GMT· Berth 12

Laytime rules applied (111)

Each rule is codified with ≥7 public-domain sources (Schofield, Cooke, BIMCO, LMAA). Full source dossier available in the LMAA submission package.

  • CANCELLATION_CLAUSE
  • LAYCAN_RIDER_EXTENSION
  • NOR_VALIDITY_BASIC
  • NOR_NOTIFICATION_METHOD
  • ANTI_TECHNICALITY_CLAUSE
  • ARRIVED_SHIP_DOCTRINE
  • WIBON_WIPON_WIFPON
  • COMMENCE_AT_BERTH_ONLY
  • NOR_OFFICE_HOURS
  • FREE_PRATIQUE_REQUIREMENT
  • CUSTOMS_CLEARANCE_REQUIREMENT
  • CARGO_RETENTION_CUSTOMS
  • BALLAST_COMPLETE_REQUIREMENT
  • SEAWORTHINESS_DUTY
  • PERFORMANCE_WARRANTIES
  • CARGO_CARE_DURING_VOYAGE
  • TURN_TIME_APPLICATION
  • WAITING_FOR_BERTH
  • SLOPS_RECEPTION_OBLIGATION
  • SUBSTITUTE_VESSEL
  • STOWAGE_PLAN_DISPUTE
  • STEVEDORE_DAMAGE
  • PILOTAGE_DELAY
  • TUGS_UNAVAILABLE
  • WAR_RISKS_CLAUSE
  • BLOCKING_BY_OTHER_VESSEL
  • AGENT_INCOMPETENCE_DELAY
  • NEGLIGENCE_OF_OWNER
  • DEAD_FREIGHT
  • SAFE_PORT_WARRANTY
  • ALWAYS_AFLOAT_WARRANTY
  • NOMINATION_FAILURE
  • DESPATCH_RATE_APPLICATION
  • SHINC_COUNTING
  • WEATHER_EXCEPTION
  • WEATHER_WORKING_DAY_DEFINITION
  • BREAKDOWN_EXCEPTION
  • STRIKE_EXCEPTION
  • ICE_CLAUSE
  • CUSTOM_OF_PORT_LOCAL_PRACTICE
  • PUMPING_PRESSURE_WARRANTY
  • PUMPING_LOG_VERIFICATION
  • HOLIDAY_DEFINITION_PER_PORT
  • EIU_AND_UU_MODIFIERS
  • SHIFTING_BETWEEN_BERTHS
  • BUNKER_OPERATIONS
  • SLOP_DISPOSAL
  • LIGHTERING_OPERATIONS
  • HOLD_CLEANING
  • CARGO_HEATING_DELAY
  • CARGO_SAMPLING_TIME
  • MULTI_PORT_REVERSIBILITY
  • AVERAGING
  • OOMAOM
  • INHERENT_VICE_CARGO_DETERIORATION
  • TIME_BAR_ENFORCEMENT
  • DEMURRAGE_TIME_BAR_FORM_VARIATIONS
  • INVOICE_PRESENTATION_REQUIREMENTS
  • SET_OFF_RIGHTS
  • SOF_EVIDENTIARY_WEIGHT
  • BURDEN_OF_PROOF_ALLOCATION
  • CESSER_CLAUSE
  • LIEN_CLAUSE
  • DEVIATION_CLAUSE
  • CLAUSE_PARAMOUNT
  • APPLICABLE_LAW_CLAUSE
  • JURISDICTION_ARBITRATION_CLAUSE
  • SANCTIONS_CLAUSE
  • FORCE_MAJEURE_CLAUSE
  • CARGO_RETENTION_QUARANTINE
  • BR_FORO_ARBITRAL
  • BR_LINDB_LEI_ESTRANGEIRA
  • BR_LGPD_DATA_HANDLING
  • WARNING_PORT_CONGESTION_SEASONAL
  • WARNING_CUSTOM_OF_PORT_DIVERGENCE
  • SUSPICIOUS_LARGE_DESPATCH
  • SUSPICIOUS_LARGE_DEMURRAGE
  • TIME_BAR_EXPIRED_OUTPUT_NONZERO
  • IMPLAUSIBLE_HOURS
  • CROSS_VALIDATION_SOF_CP
  • COA_SCOPE_DRIFT
  • COA_TERMINATION_NOTICE
  • COA_VESSEL_SUBSTITUTION
  • COA_PERFORMANCE_OBLIGATION
  • COA_DEMURRAGE_ALLOCATION
  • SUBCHARTER_PRIVITY
  • SUBCHARTER_RATE_DIFFERENTIAL
  • SUBCHARTER_DISPUTE_CASCADE
  • SUBCHARTER_TIME_BAR_INHERITANCE
  • SLOT_CHARTER_ALLOCATION
  • SLOT_CHARTER_NO_SHOW
  • SLOT_CHARTER_TRANSFER
  • POOL_EARNINGS_DISTRIBUTION
  • POOL_VOYAGE_SELECTION
  • POOL_TIME_BAR_POOLED
  • POOL_PERFORMANCE_INDEX
  • VESSEL_LIEN_ON_CARGO
  • CARGO_LIEN_BY_CHARTERER
  • CHARTERER_LIEN_ON_SUBFREIGHT
  • LIEN_NOTICE_REQUIREMENT
  • LIEN_RELEASE_PROCEDURE
  • DAMAGE_DURING_DEMURRAGE
  • CAUSE_ATTRIBUTION_DAMAGE
  • OWNER_MITIGATION_DUTY
  • CARGO_CLAIM_SET_OFF
  • BUNKER_QUALITY_DELAY
  • BUNKER_TIME_OFF_HIRE
  • BUNKER_SURCHARGE_TRIGGER
  • WAR_RISK_TRADING_LIMITS
  • CARGO_DOCUMENTATION_DELAY
  • LMAA_PRECEDENT_LOOKUP

Edge cases triggered:

  • PORT_CHARTER_NOR_FROM_ANCHORAGE
  • FREE_PRATIQUE_GRANTED_AFTER_ACCEPTANCE
  • WCCON_ASSUMED_FROM_RIDERS
  • TANKER_SLOP_CHECK_NEEDED
  • TIME_BAR_EXPIRED

Analyst notes (58)

Engine flags each clause needing customer review. First 5 shown below.

  • CANCELLATION_CLAUSE: customer verify laycan window em CP. Laydays = earliest NOR; cancelling date = latest arrival before charterer pode cancel. Vessel early: charterer pode delay laytime start. Vessel late: charterer cancels sem liability. Owner improper cancellation: damages for market loss (ballast + freight). BIMCO Cancelling Clause 2002 standard.
  • LAYCAN_RIDER_EXTENSION: customer verify rider clauses. "Slip laycan" permits N-day extension via mutual consent. "Firm laycan" no slippage. "Substitute laycan" entire window replaced. LATAM CPs (Synacomex/Norgrain): laycan tied to grain elevator availability. Brazilian iron ore: mining production schedule. Argentine grain: Up-River elevator. Mutual consent required (no unilateral). Addenda document changes.
  • NOR_VALIDITY_BASIC is draft-pre-sme: does not check WIPON/WIBON/WIFPON/WCCON, free pratique, customs, pumping readiness
  • NOR_NOTIFICATION_METHOD: customer verify CP notification method clause. Asbatankvoy Cl. 6: telex/written. BPVoy 3: fax confirmed by telex. Modern CPs: email increasingly accepted. Default English law: any reasonable method. The Port Russell: enumerated list = exhaustive (closed). Recipient: charterer ou authorised agent (não pilot/port authority/terminal). Waiver via subsequent action sem protest cures defect.
  • ANTI_TECHNICALITY_CLAUSE: customer verify CP. NYPE 2015 cl. 11(b) standard 3 banking days cure. BIMCO Anti-Technicality 2002 standard. Three notice elements required: (1) identify default; (2) state cure period; (3) warn of withdrawal. The Afovos [1983]: premature notice invalid. The Li Hai [2005]: clear banking days computation excluding day of notice. The Nanfri: bona fide deductions bar withdrawal. Cannot validate fundamentally bad NOR — só minor defects.

+ 53 more warnings in the full audit report.

Sample dispute letter (FS-004)

Below is the actual letter our engine would draft for this case. Sent by you, the Charterer, to the Owner. Cites CP clauses + LMAA precedents + your engine calculation. Editable in the platform before sending.

**Subject:** DEMURRAGE DISPUTE — MT EUROPA STAR — VOYAGE 2026-Fos-Singapore-005 — USD 58,000 claimed, despatch USD 38,666.67 owing + TIME BAR CHALLENGE

**To:** Tsakos Energy Navigation Ltd.
Demurrage Department
Athens, Greece

**From:** BP Singapore Pte Ltd.
Marine Operations
Reference: BPSG-DEM-2026-005

**Date:** 28 May 2026

---

Dear Sirs,

We refer to your demurrage invoice dated [date], claim sum **USD 58,000.00**, in respect of voyage 2026-Fos-Singapore-005 (MT EUROPA STAR, EN590 ULSD gasoil, Fos-sur-Mer→Singapore, BPVoy 4 form).

We have completed an independent audit and respectfully dispute the claim. The vessel was entitled to **despatch USD 38,666.67**, producing a net amount **due to Charterer of USD 96,666.67**.

In addition, we **specifically raise the BPVoy 4 time-bar clause** (Clause 20) — see Section 3 below.

## 1. Engine calculation

- **Laytime allowed:** 84.00 h (BPVoy 4 + SHINC + 6h turn time per CP Part I)
- **Laytime used:** 25.00 h (per SoF events)
- **Delta:** -59.00 h
- **Despatch rate:** USD 16,000/day × 59 h = **USD 38,666.67 owing to Charterer**

## 2. Total Terminal efficient turnaround

Vessel berthed Berth 12 (Total Terminal) at 06:00 UTC 21 April 2026, loading commenced 08:00, completed 10:00 UTC 22 April — 26 hours laden including pump priming. Despatch clearly crystallised.

## 3. BPVoy 4 time-bar challenge

Per **BPVoy 4 Clause 20** (incorporated by reference), a demurrage claim must be presented to Charterer within **30 days from completion of discharge** **together with all supporting documents**: NOR, SoF (signed by both parties), pumping logs, time logs, laytime calculation, and demand letter.

Per the **DEMURRAGE_TIME_BAR_FORM_VARIATIONS rule** and **INVOICE_PRESENTATION_REQUIREMENTS rule** in our engine (sources: Schofield §7.10-7.30, Cooke Ch. 17, BIMCO comparison, *The Amalie Essberger* [2019] EWHC 3402, and ASDEM issue 27):

a. Strict construction applies — late presentation = **absolute forfeiture, no cure**.
b. Some BPVoy 4 amendments require **actual receipt** by Charterer (not merely "sent").
c. Partial submission of documents within the 30-day window may still bar the entire claim.
d. The pumping log production is itself a condition precedent under BPVoy 4 Clause 19.

Please confirm by return:

1. **Date of completion of discharge** at Singapore (Charterer's records show [date]);
2. **Date your demurrage invoice was actually received** by BP Singapore (we have searched our records and have no record matching the 30-day window);
3. **Production of the fully signed pumping log** per Clause 19.

Absent satisfactory confirmation on points 1-3, the claim is time-barred and we reserve the right to plead Clause 20 as a **complete defence** in any subsequent arbitration.

## 4. Applicable authorities

- **BPVoy 4 Clauses 19, 20, 30** (pumping log, time bar, arbitration)
- **The Amalie Essberger** [2019] EWHC 3402 (strict construction of time-bar clauses)
- **Schofield "Laytime and Demurrage" 8th ed** §7.10-7.30
- **Cooke "Voyage Charters" 5th ed** Ch. 17

## 5. Demand

We demand:

1. **Withdrawal** of the USD 58,000 invoice;
2. **Confirmation** of points 1-3 in Section 3 above within 7 days; and
3. **Payment** to Charterer of despatch **USD 38,666.67** within fourteen (14) days from this letter.

## 6. Reservation of rights

All Charterer's rights expressly reserved including the BPVoy 4 Clause 20 time-bar plea.

Yours faithfully,

**BP Singapore Pte Ltd.**

Enclosures: Annex A (Demurrage.IA audit PDF, 5 pages); Annex B (rules dossier — time-bar form variations); Annex C (citations CSV).

Synthetic case; real letters are tailored to your CP rider clauses + factual record.

What you receive as a charterer

  • 📄 Dispute letter (FS-004)

    AI-drafted, citation-backed, with 9 LMAA precedents catalogued. Ready to send to owner counsel.

  • 📑 Audit PDF (FS-005)

    5+ page deterministic report with calc breakdown, rules applied, full citation chain.

  • 📦 LMAA submission ZIP (FS-012)

    8-file bundle ready for arbitral tribunal: cover letter + CP + SoF + audit + dispute + citations + rules dossier + raw calc JSON.

  • 💵 Success-fee invoice (FS-007)

    20% pilot fee, billed only after charterer confirms recovery. No upfront. No recovery, no fee.

Why charterers + tribunals trust this output

  • CP#3 — Deterministic engine. Pure TypeScript, zero LLM in the calc path. Same input = same output, always.
  • CP#4 — Citation chain. Every fact in every output traces to a verbatim quote + page + paragraph in the source CP/SoF.
  • CP#5 v2 — Multi-source validation. Each rule backed by ≥7 sources (Schofield, Cooke, BIMCO clauses, LMAA awards) + multi-model AI agreement.
  • CP#8 — Data ownership. Your CPs and SoFs are yours. Export anytime, delete on churn.

Run this on YOUR claims.

3 fields. No signup, no credit card. André replies within 24h with a Calendly link and walks you through what to send for the first free audit (up to 5 claims).

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Gasoil / tanker BPVoy 4 demo · Demurrage.IA