IMO DCS, CII, SEEMP Part III & Net-Zero Framework
Global IMO regulations set binding obligations on fuel data collection, carbon intensity ratings and energy efficiency planning. SEACOTEC covers it all — end to end.
IMO DCS & Carbon Intensity Indicator (CII)
The IMO DCS and CII are two interconnected global frameworks under MARPOL Annex VI. DCS collects the annual fuel consumption data that directly feeds into the CII calculation — making accurate data collection the foundation of a good carbon intensity rating.
IMO DCS — fuel data collection
Ships ≥5,000 GT must collect and report annual fuel oil consumption, distance travelled, hours underway and cargo carried — verified and submitted to the Flag State.
CII — A to E rating
The CII measures CO₂ per transport work (g CO₂/dwt·nm). Every ship receives an annual A–E rating against a tightening reference line.
D & E consequences
A D rating for three consecutive years, or a single E rating, triggers a mandatory corrective action plan under SEEMP Part III.
Tightening every year
Required CII reductions increase annually — what is a C rating today may become a D without proactive operational measures.
- SEEMP Part II (DCS Data Collection Plan) preparation and verification coordination
- All relevant data collection and aggregation via SEACOLLECT
- Annual or periodical DCS FOC-R preparation and verification coordination
- CII calculation per vessel and fleet-wide forecasting via SEACOSCORE
- Attained vs required CII gap analysis and voyage-level impact modelling
- Corrective action plan development for D/E rated vessels
SEEMP Part III
SEEMP Part III is mandatory for ships ≥5,000 GT and must be approved by the Recognized Organization (RO) on behalf of the Flag State Administration. It documents how the ship will achieve its required CII rating — including operational measures and corrective actions where needed.
What it contains
The ship's CII rating history, the required CII for the current year, planned operational improvement measures and a corrective action plan if rating is D or E.
Annual review
The plan must be reviewed and updated each year to reflect the ship's actual CII performance and updated targets.
- SEEMP Part III drafting tailored to each vessel
- Verifier submission and approval coordination
- Annual review and update as CII performance evolves
- Document storage and version control in SEACODOCK
IMO Net-Zero Framework
The revised IMO GHG Strategy adopted in 2023 sets net-zero greenhouse gas emissions from international shipping by or around 2050. The IMO Net-Zero Framework — including the Goal-based Fuel Standard (GFS) and a global carbon pricing mechanism — is expected to enter into force from 2028.
2050 net-zero target
IMO aims for net-zero GHG emissions by or around 2050, with indicative checkpoints of −20% by 2030 and −70% by 2040 (vs 2008 baseline).
Goal-based Fuel Standard
The GFS will set a maximum lifecycle GHG intensity for marine fuels — driving a shift from fossil fuels to zero and near-zero alternatives.
IMO carbon pricing
A global IMO levy on non-compliant fuel use is under negotiation — expected to create a financial incentive for early fuel transition.
Timeline
Final framework is expected to enter into force on 1 January 2028. Early preparation is key to avoiding compliance costs.
- Regulatory monitoring — we track MEPC developments and update your compliance roadmap
- Fleet GHG intensity assessment and gap analysis against future GFS thresholds
- Alternative fuel transition planning and scenario modelling
- Integration with EU ETS, FuelEU and CII compliance for a unified decarbonization strategy
Stay ahead of global IMO requirements
From DCS data collection to net-zero strategy — our team manages it all so you can focus on your fleet.