Every maritime emission scheme in one place
The maritime emissions regulatory landscape is expanding, fast. EU ETS, FuelEU, the UK ETS, CII, the IMO Net-Zero Framework, and a growing number of sovereign carbon initiatives from individual states are reshaping the commercial calculus of every voyage, contract, and fleet decision.
The Siglar Carbon Scheme Navigator gives you a structured, expert-reviewed overview of every active and upcoming scheme with a direct commercial impact on the shipping value chain. It is free, requires no registration, and is maintained by a team that has been building maritime emissions intelligence since 2016.
Latest maritime EMISSIONs schemes updates
China’s Ecological Environment Code entered into force on 15 August 2026, consolidating national requirements covering compliant marine fuel, shore power, ballast water, vessel discharges, pollution certificates and equipment, waste reception, monitoring and environmental records. Jiangsu MSA subsequently confirmed enforcement preparation, while the application of certain IHM provisions to foreign ships requires local confirmation.
EU ETS shipping companies must surrender allowances by 30 September 2026 covering 70% of verified 2025 in-scope maritime emissions. Operators should complete emissions reconciliation, Union Registry access, EUA procurement and contractual settlement checks before the deadline.
Norway formally incorporated IMO Resolution MEPC.398(83) into its environmental safety regulations. From 1 September 2026, affected engine modifications and alternative-fuel conversions require an agreed NOx certification pathway, Engine Emission test plan, supporting Technical File and updated certification evidence.
BIMCO’s Tripartite Joint Industry Working Group opened a non-binding consultation on using DNV’s Operational Vessel Data standard as a common framework for exchanging log-abstract and noon-report data used in maritime emissions reporting. The corrected consultation deadline is 15 September 2026.
AMSA warned that ships using convention-inconsistent statutory certificate extensions may be detained in Australia. Extensions must have a valid convention basis, cover only the minimum period required and support a direct voyage to the agreed survey port rather than continued commercial trading.
AMSA confirmed Australian implementation of the joint Paris/Tokyo MoU Cargo Securing Concentrated Inspection Campaign from 1 September to 30 November 2026. The campaign is not environmental, but creates immediate deficiency, detention and port-call exposure for foreign-flagged vessels.
Djibouti and Tanzania opened official discussions on sovereign-carbon monitoring, valuation and potential cooperation. No maritime contribution rate, vessel scope, reporting obligation, registry procedure or effective date was adopted, so no Tanzanian carbon exposure should yet be added to voyage-cost models.
Gabon’s 2026 Finance Law confirmed a maritime Carbon Contribution of 10,700 FCFA/tCO₂, with 50% of emissions from international Gabon port movements attributed to Gabon. Monthly declarations are due by the 15th, with vessel-level invoicing and a 3% monthly late-payment penalty.
A Gabonese state press-agency report said an amending finance law doubled the rate to 21,400 FCFA/tCO₂ and restricted passing the charge to clients. The primary amended legal text was not retrieved, so the revised rate and commercial-allocation provision remain provisional.
IMO Resolution MEPC.398(83) enters into force on 1 September 2026, introducing a formal NOx recertification pathway for substantially modified engines, alternative-fuel conversions and engines seeking certification to a previously uncertified Tier. Engine Emission test plans must be agreed with the Administration before testing.
Panama’s seasonal cetacean-protection measure took effect on 1 August and runs through 30 November 2026. Official material describes a 10-knot limit in designated Gulf of Panama routing areas, potentially affecting Panama Canal approach times, fuel and emissions estimates, scheduling and charterparty exposure.
Shanghai MSA’s consultation on proposed ship hold-cleaning rules closed on 8 August. The draft addressed pollution prevention, residue and wastewater management, contractor controls and documentation, but no final binding rule or implementation date was identified.
South Coast AQMD considered a proposed addendum for enhanced clean-ship incentives at the ports of Los Angeles and Long Beach. No executed addendum, Harbor Commission approval, final tariff terms or current vessel-operator obligation was confirmed.
The USCG consultation on its retrospective analysis of the 2012 ballast-water discharge standards closed on 10 August. The first increased-volume UK ETS auction linked to maritime inclusion took place on 12 August; both were policy or procurement milestones and did not introduce new shipboard reporting requirements.
European Commission COM(2026) 616 proposed EU ETS / MSR revisions with maritime provisions on transhipment-port treatment, offshore activity and support for sustainable maritime fuels. Proposed, not binding.
COM(2026) 620 proposed changes to EU MRV and FuelEU workflows, including energy-use data, verifier / database mechanics, smaller-vessel coverage and offshore-support operations. Proposed, not binding.
MCA MGN 711 linked environmental deficiencies to detention, stoppage or refusal of access and reinforced UK port-call anomaly reporting and CERS 3 timing.
USCG opened comments through 10 August on its retrospective analysis of the 2012 ballast-water discharge standards, including BWMS cost and retrofit assumptions.
CARB published a Shore Power Enforcement page, increasing visibility over at-berth emissions control, vessel-visit reporting, exceptions and audit exposure at California ports.6. Panama MMC-193 updated the optional electronic MARPOL and Ballast Water Record Book framework for Panama-flagged ships.
EEX published revised 2026 and new 2027 EUA auction calendars on 30 July, closing the end-July watchpoint and updating carbon-procurement inputs; late-2027 volumes remain preliminary.
UK ETS maritime entered into force on 1 July 2026 for in-scope UK domestic voyages and UK in-port emissions, creating live UKA, monitoring, reporting and pass-through exposure.
The revised UKA calendar added 983,000 allowances across remaining 2026 auctions; the first increased-volume auction is 12 August 2026.
Paris MoU published its 2025 Annual Report and performance lists for use from 1 July, affecting flag / RO performance and Ship Risk Profile inspection exposure.
EPA proposed a USD 59,000 CWA / VGP settlement for Ninghai, citing BWTS sampling, functionality-monitoring and annual-report deficiencies; comments closed 31 July.
AMSA's 2026-27 National Compliance Plan identified environmental protection, pollution prevention and exhaust-gas-cleaning-system checks as inspection priorities.
EEX revised the 2026 EU ETS auction calendar on 13 July; September-December volumes remained indicative pending the final MSR adjustment.
Singapore MPA Circular No. 7 of 2026 translated MEPC 84 outcomes into a flag-state implementation watch, including DCS / CII, SEEMP, EEDI, BWM and Annex VI amendments entering into force on 1 September 2027.
FuelEU Maritime: the first Document of Compliance / compliance-balance milestone fell due on 30 June 2026. Confirm verifier status, database records, pooling / borrowing and penalty settlement.
UK ETS maritime: official compliance guidance published 22 June clarified METS account setup, an operator monitoring plan within 42 days of first in-scope activity, CO2 / N2O / CH4 monitoring, verified reporting and allowance surrender.
UK ETS market guidance confirmed that ICE would revise the 2026 UKA auction calendar after the 1 July maritime start, affecting procurement and voyage-cost assumptions.
Paris MoU published MARPOL PSC inspection guidance covering Annex I, Annex II and Annex V controls, investigation procedures, cargo prewash / stripping and environmental recordkeeping.
DG MOVE published FuelEU competent-authority routing; IMO biofuel guidance MEPC.1/Circ.905/Rev.1 was surfaced for DCS / CII use from 1 January 2027.
UK ETS maritime goes live 1 July 2026. 🔗
IMO’s SBSTA 64 submission confirmed MEPC 84 progress on Net-Zero Framework timing, marine-fuel LCA work and GHG-related technical work. 🔗
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IMO opened MEPC 84, with Net-Zero Framework, CII review, ECAs, ballast water, plastics and biofouling on the environmental agenda. 🔗
Twin deadlines passed: verified 2025 EU ETS emissions due 31 March 2026 (70% surrender obligation follows 30 September), and FuelEU third-party verification completed by 31 March.
FuelEU compliance balances are due for approval in the FuelEU database by 30 April 2026.
Common questions
Who uses the scheme navigator
Assess combined regulatory cost exposure across trade lanes and charter structures before it shows up on your P&L.
Map compliance obligations across your fleet, flag states, and trading patterns.
Explain what emission regulations mean commercially, not just that they exist.
Factor the full regulatory cost into your trading decisions.
Understand the regulatory environment affecting the assets that you finance.
Understand how the regulatory environment affects the fleet you manage, and what your responsibilities are under each scheme.
Go further
With the full Siglar Carbon Estimator you can calculate the regulatory costs of your own routes, vessel, and charter terms.
Fleet-level compliance management, regulatory risk, assessment, and advisory support on how the schemes affect your business.
Maritime emissions
intelligence since 2016
Every scheme card on this Navigator has been written and reviewed by Siglar Carbon's maritime emissions specialists, working from primary regulatory sources, IMO circulars, EU legislation, national law, and official government communications. We do not rely on AI-generated content. In a world where regulatory information is easy to find but harder to verify, that distinction matters. When official government positions conflict with third-party claims, we follow the primary source.
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