🌊 Carbon Audit Analyserv1.0 · IMO NZF/GFI & CII

Vessel & reference particulars

DWT is used as the CII/AER denominator — leave "verified" unchecked until confirmed against the EEXI Technical File; every KPI it feeds shows a provisional flag until then.

Multi-report intake

Drop one or more exported Ship Ops HTML reports (from the Ship Voyage / TCE Calculator's "⬇ Download HTML All Cases"). Each file is parsed independently; duplicates are detected by vessel + voyage number.

Drag & drop Ship Ops HTML reports here
or click to browse — multiple files supported

Loaded voyages

⛽ Voy FC 📊 KPI Dashboard
Voy #QualityRouteStartEndDist (NM)HFO (MT)MGO (MT)BL Qty (MT)Source
View Data History →

Voyage Overview & Fuel Efficiency

Vessel-Parameters

Captured from the Section 0 vessel master parameters in uploaded Voyage Calc / Ship Ops reports (Intake → Multi-report intake). Most recent upload that carries each field wins.

Voyage fuel consumption

VoyageRoute Port DaysPort HFOPort MGO Sea DaysSea HFOSea MGO Total HFOTotal MGO Dist (NM)BL Qty (MT) HFO/MT CargoFuel/MT Cargo/NM

Bottom-line ratios are computed from summed totals (Σ fuel ÷ Σ distance / Σ cargo), not averaged per-voyage ratios.

HFO & MGO Total by Voyage (MT)
Port vs Sea Fuel by Voyage (MT)
Port Days & Sea Days by Voyage
Fuel per MT Cargo per NM by Voyage

Voy FC Data History

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Date SavedVesselPeriodVoyages

📊 KPI Dashboard

View Data History →

Carbon Audit Period — both bases

Option A — Audit Data Period

Option B — Reporting Year

Attained GFI & CII — headline

Fleet Carbon Summary

A. Fuel Consumption

B. Tank-to-Wake (TtW) CO₂

C. Well-to-Wake (WtW) CO₂eq

D. Ship Attained GFI

E. Cargo & Intensity Metrics

Reference factors (editable)

Emission & energy factors

FuelTtW (t/t)LCV (MJ/kg)WtW GFI (g/MJ)
HFO
MGO

IMO 2008 GHG baseline (gCO₂eq/MJ)

NZF penalty rates ($/tCO₂eq)

GFI Penalty Matrix — IMO Net-Zero Framework

YearBase TargetDirect TargetZNZ ThresholdDeficit vs Base (g/MJ)Deficit (tCO₂eq)TierEst. Annual Penalty (USD)

Biofuel blend GFI compliance table

Blend GFI = Bio% × 15.0 + Fossil% × attained fossil GFI (energy-weighted). Status shown against the 2028 Base Target.

BlendBio %Blend GFI (g/MJ)2028 Status

CII — Carbon Intensity Indicator (AER method)

Rating provisional — CII Reference Line requires MEPC.337(76) constants keyed to confirmed ship type + GT. Cannot assign an A–E rating without it.

Auto Data-Quality Flags

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    Save / Reload

    Data History (Full CA Report)

    Click any row to reload that snapshot.

    Date SavedVesselPeriodVoyagesAttained GFITtW CO₂ (t)

    Downloads & re-import

    All three downloads embed the same underlying JSON (#carbonaudit-report-data) — any one can be dropped back into Intake to restore full state. The Full CA Report renders all seven sections (Raw Data, Voyage CO₂ Calc, Fleet Carbon Summary, GFI Penalty Matrix, CII & EEXI Calc, Audit Notes, NZF Compliance Projections).

    ⚓ EEDI — Energy Efficiency Existing Ship Index

    Core KPI Indicators

    ⚠ Missing / manual-entry data

    EEDI is a one-time design index (MEPC.212(63)) from the vessel's EEDI Technical File — most inputs are certificate values, not voyage operations data.

      EEDI = (PME×CFME×SFCME + PAE×CFAE×SFCAE) / (fi×fc×fl×fw×Vref×DWT)

      MEPC.212(63) · Numerator = propulsion + auxiliary CO₂ emission rate · Denominator = transport work rate.

      📊 CII — Carbon Intensity Indicator (Projection)

      Core KPI Indicators

      This is a forward projection from an assumed annual operating profile (MEPC.337(76)/MEPC.353(78)) — distinct from the Attained CII (AER) already computed from actual loaded voyages on the KPI Dashboard. Use this tab to test "what would our rating be under this profile," not as the audited actual.

      ⚠ Missing / manual-entry data

        CIIattained = Annual CO₂(g) / (DWT × Annual nm) · CIIref = a × DWT−c

        MEPC.337(76) reference lines, MEPC.353(78) rating boundaries d1=0.82 d2=0.93 d3=1.08 d4=1.28.

        ⛽ GFI — GHG Fuel Intensity (Projection)

        Core KPI Indicators

        This tab checks a chosen annual fuel profile against an IMO NZF target-by-year schedule. Your KPI Dashboard's Attained GFI and GFI Penalty Matrix (sourced from the vetting workbook's Tier 1/Tier 2/ZNZ structure) remain the audited figures for actual loaded voyages — this tab is for scenario testing.

        ⚠ Missing / manual-entry data

          GFI = (Fuel Mass × CF × LCV) / Energy · GFI Index = GFIactual / GFItarget

          IMO NZF 2023 GHG Strategy · Well-to-wake carbon intensity, gCO₂e/MJ.