Maritime Academy
MRV — Monitoring, Reporting and Verification
A traceable data chain from operational events to verified reporting.
This chapter focuses on EU MRV. IMO DCS and UK ETS monitoring/reporting are separate systems.
Rules and bulletins may change. Before operation or voyage, verify the latest official source and ship-specific applicability. This page is not permission, certification or a real-time risk notice.
FOUR-STAGE TOPIC OVERVIEW
Establish applicability, then verify the operation
Plan/data definition
Daily event records
Reconciliation/correction
Verifier/report
1 · Establish scope by ship type
After the 2025 expansion, “above 5,000 GT only” is insufficient. Alongside cargo/passenger ships ≥5,000 GT, verify applicable offshore ships and general cargo/offshore ships of 400–4,999 GT. MRV inclusion does not necessarily mean simultaneous ETS inclusion.
Reference: European Commission — Maritime ETS / MRV FAQ ↗2 · The monitoring plan defines the data
Obtain fuel method, consumer, voyage/port boundary, distance, time at sea, cargo/transport-work and missing-data method from the company plan. Bridge, engine and commercial records need consistent time bases and event definitions.
Reference: EUR-Lex — Regulation (EU) 2015/757: MRV ↗3 · Reconcile daily
Reconcile BDN, ROB, soundings/flowmeters, transfers and consumption. Do not silently present estimates as measurements: apply the plan’s data-gap procedure and correction trail. A call’s commercial/bunkering purpose can affect its classification.
Reference: EUR-Lex — Regulation (EU) 2015/757: MRV ↗4 · Reporting, verifier and documents
Check company reporting/verification calendar, THETIS-MRV permissions and required Document of Compliance. Official portal training videos are linked. Keep master/office/verifier roles distinct; do not alter accounts/company records without authority.
Reference: EMSA — THETIS-MRV ↗MASTER • RESPONSIBLE OFFICER • COMPANY
Six field checks
- Identify ship type/GT and applicable reporting systems.
- Verify monitoring-plan revision and data owners.
- Match fuel, port, time, distance and cargo events daily.
- Investigate ROB/BDN/consumption discrepancies.
- Keep data-gap/correction trails consistent with the plan.
- Track verification, reporting and required compliance documents.
Educational checklist. Completion is not operational/compliance approval; use the relevant vessel permits/forms separately.
Documents to have available
- Monitoring plan and revisions
- BDN/ROB/flowmeter and transfer records
- Voyage, port, distance and cargo records
- Verifier queries, report and DoC
Onboard scenarios
A 3,500 GT general cargo ship: definitely outside MRV?
No. Examine the 2025 expansion by ship type.
Missing measurement: enter an average as an actual reading?
No. Apply the approved data-gap method and retain an auditable correction trail.
LEARNING CHECK
Think of your answer, then reveal the explanation
Is an MRV report allowance surrender?
No; reporting and ETS surrender are separate.
Are IMO DCS and EU MRV data definitions identical?
Not always; verify the relevant plans and scope separately.
Self-assessment only; no exam result, personnel record or competence certificate is generated.
Open the official sources
EUR-Lex — Regulation (EU) 2015/757: MRV
EU legal text; consult current consolidated text
Open source ↗CLIMATE.EC.EUROPA.EUEuropean Commission — Maritime ETS / MRV FAQ
European Commission implementation guidance
Open source ↗EMSA.EUROPA.EUEMSA — THETIS-MRV
EU agency / reporting system information
Open source ↗EMSA.EUROPA.EUEMSA — Company and FuelEU training videos
EU agency practical training
Open source ↗Legal instruments, explanatory guidance and operational bulletins have different roles. Check later amendments and consolidated texts where needed. Access and external documents remain under the publisher’s control.