IMO 2030 Compliance Checklist — CII, EU ETS, FuelEU, and the Road to the Mid-Term Measures

At a glance

• The destination: the IMO's 2023 Revised GHG Strategy targets net-zero emissions from international shipping by or around 2050, with an indicative checkpoint of at least a 20% absolute reduction (striving for 30%) by 2030 against 2008, and 5–10% of energy from zero or near-zero-emission sources by 2030.
• The instruments already live: EEXI (one-time technical efficiency), CII (annual operational rating, tightening every year), SEEMP Part III (audited implementation plan), IMO DCS (fuel-consumption reporting).
• The regional overlay: EU ETS covers maritime with a completed phase-in (40% of verified emissions surrendered for 2024, 70% for 2025, 100% from 2026), and FuelEU Maritime prices the GHG intensity of energy used on board from 2025.
• The pending layer: the IMO's mid-term measures — a global fuel-intensity standard plus an emissions-pricing mechanism approved in draft at MEPC 83 (April 2025); formal adoption was deferred at the October 2025 extraordinary session and remains pending. Plan for it; don't paper it yet.
• The commercial reality: compliance cost is no longer an environmental line item. Between allowances, intensity penalties, and rating-linked charter clauses, carbon is now a fuel-bill-sized entry in the voyage estimate.

Layer 1 — the IMO baseline you are already in

• EEXI (Energy Efficiency Existing Ship Index). One-time technical compliance, in force since 2023, typically met via engine power limitation (EPL) on older tonnage. Checklist item: confirm the EPL documentation matches the installed configuration — port-state control checks it, and an undocumented override is a detainable deficiency.
• CII (Carbon Intensity Indicator). Annual operational rating, A–E, computed from DCS fuel data and distance sailed, with required ratings tightening each year through the decade. A vessel rated D for three consecutive years or E once must file a corrective action plan in its SEEMP before it can continue trading. Checklist items: forecast each vessel's rating for the current year on a rolling basis, not retrospectively; identify the D/E tail of the fleet now; and model how routing choices (waiting time, port congestion, long ballast legs) move the rating — CII is famously sensitive to commercial decisions the technical department doesn't control.
• SEEMP Part III. The audited ship-specific implementation plan behind the CII trajectory. Checklist item: keep it a living document — a verification audit against a stale plan is a findable non-conformity.
• IMO DCS. The data pipeline everything else consumes. Checklist item: reconcile DCS, EU MRV, and internal noon-report data quarterly; divergent datasets are the root cause of most downstream compliance disputes.

Layer 2 — EU ETS: the allowance bill

Since 2024, commercial vessels of 5,000 GT and above surrender EU allowances (EUAs) against verified CO₂ emissions: 100% of emissions on intra-EEA voyages and at berth in EEA ports, 50% on voyages into or out of the EEA. The phase-in is complete — 40% of 2024 emissions, 70% of 2025, and 100% from the 2026 compliance year — and scope extends beyond CO₂ (methane and nitrous oxide) from 2026 reporting.

Checklist items:

1. Allowance procurement strategy. Decide who buys EUAs, when, and against what hedge policy. An unhedged allowance position is a second commodity exposure stacked on bunkers.
2. Contractual pass-through. The shipping company (DOC holder) holds the surrender obligation; commercial exposure is reallocated by contract. Time-charter fixtures should carry the BIMCO ETS Allowances clause (or equivalent) specifying transfer timing, quantities, and default remedies. Voyage-charter and CoA paper needs an explicit ETS surcharge mechanism — silence means the owner eats it.
3. THETIS-MRV hygiene. Verified MRV data drives the surrender number; late or contested verification cascades into penalty exposure.
4. Routing edge cases. Transshipment definitions (the "port of call" rules designed to prevent evasive calls at near-EEA hubs) change which leg of a voyage is in scope; network planners should model them, not assume them.

Layer 3 — FuelEU Maritime: the intensity penalty

From January 2025, FuelEU regulates the GHG intensity of energy used on board (well-to-wake, gCO₂e/MJ) for the same geographic scope as the ETS — a 2% reduction against the 2020 baseline now, stepping to 6% in 2030 and steepening sharply thereafter. Non-compliance accrues a penalty per unit of energy deficit; compliance surpluses can be banked, borrowed, or pooled across vessels — including vessels under different owners, which creates a genuine compliance market.

Checklist items:

1. Fleet intensity baseline. Compute each vessel's attained GHG intensity now; identify which ships clear 2025–2029 limits on conventional VLSFO (most do) and which strategies clear 2030 (most conventional-fuel ships will not without blending).
2. Biofuel and pooling strategy. A modest biofuel blend on selected vessels can generate pooled surplus for the fleet at lower cost than fleet-wide blending; run the pooling optimisation annually.
3. Charter-party allocation. The BIMCO FuelEU clause landscape is younger and less standardised than the ETS equivalent; fixtures should assign compliance balance ownership, penalty responsibility, and the value of any surplus explicitly.
4. OPS readiness. Container and passenger ships face onshore-power requirements at major EEA ports from 2030; retrofit planning belongs in this decade's docking schedule.

Layer 4 — the pending IMO mid-term measures

MEPC 83 (April 2025) approved, in draft, a global framework combining a fuel-intensity standard with an emissions-pricing mechanism — the first genuinely global carbon price on a whole industry. Formal adoption was deferred at the extraordinary session in October 2025, and the framework remains pending reconsideration. Two planning implications survive the uncertainty:

• Directionally, it converges with FuelEU — fuel-intensity accounting, unit-based penalties/credits, revenue recycling toward zero-emission fuels. Systems and data pipelines built for FuelEU compliance are ~80% of the eventual IMO requirement.
• Do not paper long-dated fixtures against the draft. Until adoption, clauses should reference the framework conditionally ("as and when in force"), the pattern the market already uses for regulatory-change risk.

Fleet-level action checklist

1. One reconciled emissions dataset (DCS = MRV = internal), audited quarterly.
2. Rolling current-year CII forecast per vessel; D/E tail flagged with disposal/retrofit/redeploy decisions attached.
3. EUA procurement and hedge policy in writing; surrender calendar owned by a named function.
4. ETS and FuelEU clauses on every new fixture; legacy charter book reviewed for silence.
5. FuelEU pooling optimisation run for the fleet year; biofuel supply contracts sized to it.
6. EPL and SEEMP III documentation audit-ready.
7. Newbuild and retrofit specifications benchmarked against 2030 (not current-year) intensity limits.
8. A single internal owner for the "carbon P&L" — allowances, penalties, surcharge recovery, and pooling value in one ledger.

Indicators to watch

1. MEPC session outcomes — adoption timing and any softening of the mid-term measures.
2. CII reduction-factor revisions for the second half of the decade (under review at IMO).
3. EUA price — the marginal cost of every tonne emitted in EEA scope.
4. FuelEU penalty vs biofuel premium spread — the arbitrage that sets pooling value.
5. BIMCO clause releases — standardisation reduces fixture friction.
6. Port-state control campaign focus — CII/EEXI documentation sweeps.
7. National ETS extensions — additional jurisdictions extending emissions trading to maritime widen the patchwork.
8. Green-corridor and OPS infrastructure announcements at your fleet's core ports.
9. Alternative-fuel bunkering availability at hub ports — the physical constraint on every intensity strategy.
10. Charter-market rating premia — the spread between A/B-rated and D/E-rated tonnage on period fixtures, the market's own price on compliance.

Authoritative sources

• IMO — 2023 Revised GHG Strategy — the targets and checkpoints.
• IMO — EEXI and CII — the operative short-term measures.
• European Commission — Reducing emissions from the shipping sector — EU ETS maritime scope and FuelEU Maritime.
• EMSA — THETIS-MRV — the EU verification system of record.
• BIMCO — Clauses library — ETS, CII, and FuelEU charter-party clauses.
• DNV — Maritime regulatory insights — class-society implementation guidance.

For the live sanctions & compliance axis scored every three hours — which carries decarbonisation-enforcement signal alongside sanctions — see the Maritime Hub, and for the fuel-cost side of the same equation, the bunker volatility guide.

This guide is part of an ongoing series of operator-grade references for the world's principal maritime choke points and industry verticals. It is updated when material commercial-geography facts change or when the editorial team revises the underlying source-mapping.