CSRD-aligned Scope 3 for ocean shipping
UAE maritime groups face CSRD value-chain reporting on top of IMO requirements. Carbon Zero computes Scope 3 from real activity — fuel burn and tonne-kilometres — with a Well-to-Tank / Tank-to-Wake split, and falls back to spend only where it must.
Three methods, one rollup
Pick the most accurate method per activity — Carbon Zero rolls everything up by Scope 3 category and method.
Fuel burn (activity-based)
Bunker tonnes × per-fuel WTT/TTW factors — the most accurate method for vessels under your operational control.
Tonne-kilometres
Cargo tonnes × distance × mode factor — for chartered legs and upstream transport where fuel data is unavailable.
Spend-based (fallback)
Procurement spend × category factor — a defensible estimate when neither fuel nor activity data exists yet.
Every fuel factor, split two ways
WTT captures upstream extraction, refining and transport of the fuel; TTW captures combustion onboard. Reporting both gives auditors the full lifecycle picture CSRD expects.
- Per-fuel factors: HFO, VLSFO, MGO, LNG, methanol, biofuel, ammonia
- kgCO₂e per tonne of fuel, WTT and TTW maintained separately
- IMO DCS / CII / EEXI-aligned metrics, scores and targets
- Evidence attached per submission for audit trails
- Cat 1 — Purchased goods & services
- Cat 2 — Capital goods
- Cat 3 — Fuel & energy-related
- Cat 4 — Upstream transportation
- Cat 6 — Business travel
Report maritime Scope 3 with confidence
Spin up a workspace, add your vessels, and compute activity-based Scope 3 in minutes.