Building Trust: Independent Emissions Verifier

IMO Data Collection System (DCS) Verification

IMO Data Collection System (DCS) Verification 

Starting from 1st January 2019, ships of 5,000 Gross Tonnage (GT) or above shall collect fuel consumption data, hours underway and distance travelled according to procedures, systems, and responsibilities to be outlined in the Ship Energy Efficiency Management Plan (SEEMP) Part II. 

Why choose Normec Verifavia?

  1. Seamless Compliance: Verify your Data Collection Plan (SEEMP II) and fuel oil data report against latest regulations, avoiding penalties and disruptions. 
  2. Streamlined Process: Leverage our expertise for a combined IMO DCS, CII & EU (European Union) MRV verification, minimizing time and effort. 

IMO DCS Verification Key Information  

Revisions to MARPOL Annex VI, which were ratified in 2016, mandate that vessels with a gross tonnage of 5,000 or more engaged in international voyages must gather and submit their fuel oil consumption records to either the Administration or a Recognized Organization (RO) starting from 2019 (according to IMO DCS regulations). These vessels falling under the purview of IMO DCS guidelines are obliged to formulate a ship fuel oil consumption data collection plan (known as SEEMP Part II), which must be approved by either the Administration or an RO. 

Further amendments to MARPOL Annex VI were incorporated in 76th session of MEPC and the CII rating scheme for ships was introduced. IMO DCS data serves as the foundation for the Carbon Intensity Indicator (CII) rating and the Ship Energy Efficiency Management Plan Part III (SEEMP Part III). Effective January 1, 2023, SEEMP Part III verification becomes mandatory for vessels of 5,000 GT and above, outlining their strategies for meeting CII targets. 

Beginning in 2024, CII calculation will become the basis of the previous year’s DCS data, subsequently reported to the DCS verifier for validation alongside aggregated DCS data. The achieved CII and corresponding environmental rating (ranging from A to E) will be documented on the DCS Statement of Compliance (SoC), which must be retained on board for five years. 

Wonder what we can do for you?

Contact us
  1. Develop SEEMP II

    Develop SEEMP II in accordance with the 2022 Guidelines for the development of a ship energy efficiency management plan (SEEMP). 

  2. Monitoring & Reporting

    Monitor the fuel oil consumption, distance, and other parameters as per the amended template or make use of the Normec Verifavia emissions dashboard for reporting all relevant parameters for IMO DCS & CII 

  3. Verification Report

    Receive a detailed report with findings, recommendations, and a Statement of Compliance after the completion of the Verification. 

  4. Ongoing Support

    Benefit from expert guidance and support throughout your IMO DCS journey. 



Find answers to the most commonly asked questions

Which ships are subject to the IMO DCS?

All ships of 5000 GT or above performing international voyages regardless of Flag or country of ownership. Ships engaged on domestic voyages, ships not propelled by mechanical means and platforms, including FPSOs, FSUs and drilling rigs, are excluded. 

What are the penalties for non-compliance?

Penalties can include fines, detention from port state Authorities, and reputational damage. 

How can I combine IMO DCS and EU MRV verification?

Normec Verifavia offers a streamlined combined verification service for ships operating in European waters. 

Who is responsible for submission and verification if there is change in company or flag state in any calendar year?

At the time of management/flag change (or close to that date) it is required to prepare the fuel oil consumption data and submit to the administration/flag state for the time under a flag state or Management Company. 

What are the compliance deadlines for IMO DCS?

By 31 May, each year ship should have Statement of compliance (SoC) for the fuel oil consumption report on board issued by a Verifier. 

Which fuel consumption monitoring methodologies can be used?

There are three acceptable fuel consumption monitoring methodologies: 

  1. Method 1: bunker delivery notes (BDN) 
  2. Method 2: Flow meters 
  3. Method 3: Bunker fuel tank monitoring on-board