The Siglar Carbon Scheme Navigator is built from a structured regulatory database maintained by Siglar Carbon, drawing only on official, primary sources.
Each emission scheme is reviewed and categorised using a consistent set of fields, including status, regulation type, geography, scope, applicability, exemptions, effective date, cost impact, caps, notes and supporting links.
Status
Each regulation is classified by status as active, upcoming or under discussion.
Regulation type
Each regulation is also grouped by regulation type:
Emissions cost implication
For selected routes, the map also shows indicative emission cost implications. These figures are derived from estimated compliance costs for representative vessel types and routes. The calculations follow the same general logic used in Siglar's Estimator environment: defining a voyage scenario, estimating route and voyage characteristics, applying relevant regulatory logic, and translating emissions exposure into cost where a price, penalty or allowance mechanism is available. Siglar's Estimator methodology uses voyage and route assumptions, fuel and emissions logic, and regulatory cost calculations to estimate exposure before a commercial decision is made.
For EU ETS and FuelEU-style exposure, the underlying methodology is consistent with Siglar's broader emissions estimation approach, where fuel or energy use is converted into emissions using applicable emission factors and then linked to the relevant compliance mechanism. The Estimator example shows compliance costs broken down by scheme, including EU ETS exposure and FuelEU balance, with voyage-level assumptions such as cargo intake, distance, voyage days, fuel use and emission pricing.
The route-level numbers shown in the Scheme Navigator are indicative estimates, not exact commercial settlements. Actual costs can vary depending on vessel specification, fuel type, speed, cargo quantity, ballast/laden profile, port time, regulation coverage, allowance or penalty price, pooling strategy, charter party terms and future regulatory updates.
Example assumptions
The indicative figures are based on representative vessel and price assumptions, for example:
Carbon and compliance prices applied: EUA at USD 85 / mt CO₂e, FuelEU surplus cost at USD 200 / mt CO₂e (WTW), and UKA at USD 72 / mt CO₂e.
Emission schemes
The list of emission schemes is a work in progress. It currently includes selected global, regional, national and port-level schemes that are relevant to maritime emissions and operational decision-making. The database will continue to be expanded over time as regulations evolve and as new information becomes available.
Siglar Carbon welcomes input from the maritime community to help improve coverage, accuracy and practical relevance.
Suggested disclaimer
The Scheme Navigator is provided for informational purposes only. It is intended to support awareness, learning and early-stage assessment of maritime environmental compliance exposure. It should not be treated as legal, regulatory, financial or charter party advice.
Regulations, prices, penalties, exemptions and implementation details may change over time. Users should verify the latest applicable rules and consult relevant regulatory, legal or commercial experts before making decisions based on compliance exposure.
The Siglar Carbon Scheme Navigator is free to use and requires no registration.
Explore the Scheme Navigator →
Each emission scheme is reviewed and categorised using a consistent set of fields, including status, regulation type, geography, scope, applicability, exemptions, effective date, cost impact, caps, notes and supporting links.
Status
Each regulation is classified by status as active, upcoming or under discussion.
Regulation type
Each regulation is also grouped by regulation type:
Emissions cost implication
For selected routes, the map also shows indicative emission cost implications. These figures are derived from estimated compliance costs for representative vessel types and routes. The calculations follow the same general logic used in Siglar's Estimator environment: defining a voyage scenario, estimating route and voyage characteristics, applying relevant regulatory logic, and translating emissions exposure into cost where a price, penalty or allowance mechanism is available. Siglar's Estimator methodology uses voyage and route assumptions, fuel and emissions logic, and regulatory cost calculations to estimate exposure before a commercial decision is made.
For EU ETS and FuelEU-style exposure, the underlying methodology is consistent with Siglar's broader emissions estimation approach, where fuel or energy use is converted into emissions using applicable emission factors and then linked to the relevant compliance mechanism. The Estimator example shows compliance costs broken down by scheme, including EU ETS exposure and FuelEU balance, with voyage-level assumptions such as cargo intake, distance, voyage days, fuel use and emission pricing.
The route-level numbers shown in the Scheme Navigator are indicative estimates, not exact commercial settlements. Actual costs can vary depending on vessel specification, fuel type, speed, cargo quantity, ballast/laden profile, port time, regulation coverage, allowance or penalty price, pooling strategy, charter party terms and future regulatory updates.
Example assumptions
The indicative figures are based on representative vessel and price assumptions, for example:
Carbon and compliance prices applied: EUA at USD 85 / mt CO₂e, FuelEU surplus cost at USD 200 / mt CO₂e (WTW), and UKA at USD 72 / mt CO₂e.
Emission schemes
The list of emission schemes is a work in progress. It currently includes selected global, regional, national and port-level schemes that are relevant to maritime emissions and operational decision-making. The database will continue to be expanded over time as regulations evolve and as new information becomes available.
Siglar Carbon welcomes input from the maritime community to help improve coverage, accuracy and practical relevance.
Suggested disclaimer
The Scheme Navigator is provided for informational purposes only. It is intended to support awareness, learning and early-stage assessment of maritime environmental compliance exposure. It should not be treated as legal, regulatory, financial or charter party advice.
Regulations, prices, penalties, exemptions and implementation details may change over time. Users should verify the latest applicable rules and consult relevant regulatory, legal or commercial experts before making decisions based on compliance exposure.
The Siglar Carbon Scheme Navigator is free to use and requires no registration.
Explore the Scheme Navigator →
