In April 2025, the Marine Environment Protection Committee (MEPC) convened for its 83rd session in London, finalizing regulatory measures that will significantly reshape the way maritime operators measure, manage, and report greenhouse gas (GHG) emissions. With the amendments now approved and pending adoption at the upcoming extraordinary MEPC session, shipowners are facing a new chapter in environmental accountability.
These updates align with the IMO’s Net-Zero GHG Strategy and are built on the framework of the Carbon Intensity Indicator (CII). But this isn’t just an update, it’s a recalibration of how shipping operations will be tracked, verified, and audited.
What’s Changing Under MEPC 83?
Gone are the days of basic annual emissions reporting. Under MEPC 83, the approach is now systemic, granular, and verifiable. The new requirements include:
- Detailed fuel consumption tracking by fuel type, including low- and zero-carbon fuels.
- Mandatory reporting of GHGs—not just CO₂, but also methane (CH₄) and nitrous oxide (N₂O).
- Operational and technical efficiency measures, such as propulsion optimization or engine retrofits, must be documented.
- Voyage-specific data like distance traveled, time at sea, speed, and cargo weight, are now part of the emissions performance equation.
This data must be collected daily, verified by a Recognized Organization (RO), and submitted to the flag state or the IMO’s Fuel Oil Consumption Database.
The Compliance Workflow: A Closed Loop of Accountability
To make the process clear, The MEPC 83 workflow is based on the CII framework.
This process ensures not just reporting, but active improvement. If a vessel’s performance is below par, corrective measures must be implemented before certification is issued. In practice, this means shipping companies need more than just historical data, they need systems that proactively guide decision-making in real time.
Why Real-Time Matters More Than Ever
One of the most challenging aspects of MEPC 83 is the expectation of data integrity and immediacy. Annual reports are no longer enough. Inspectors can now audit SEEMP documentation and emissions logs during inspections, and all reported data must be verifiable.That’s where TS Cyanergy steps in.
Our proprietary CE2 Monitor system enables shipowners to shift from reactive to proactive compliance. This advanced IoT-based platform:
- Captures real-time engine performance and GHG emission metrics.
- Integrates with exhaust gas analyzers and flow meters to calculate emissions mass, including CO₂, CH₄, and N₂O.
- Uses stoichiometric modeling to ensure accuracy in GHG reporting while optimizing fuel use.
In short, it transforms compliance from a burdensome task into a streamlined, automated process that shipowners can trust.
Learn more about the CE2 Monitor here.
Bridging the Gap Between Regulation and Readiness
Many shipowners we speak with are prepared to follow the rules; they just lack the tools to do so confidently. MEPC 83 doesn’t only affect reporting; it impacts operational decisions, vessel upgrades, and even fleet-wide strategies. The regulations are pushing the industry to evolve—not incrementally, but significantly.
If your current data collection relies on spreadsheets, manual logs, or disconnected systems, you may already be behind.
The good news? There’s a path forward that aligns with regulation and improves operational efficiency. Automated systems like Cyanergy’s CE2 Monitor not only keep you compliant—they unlock cost savings through energy efficiency and performance insights.
Looking Ahead
Compliance is no longer just a matter of ticking boxes, it’s about embracing data as a strategic asset. MEPC 83 reinforces this shift, and the most prepared shipowners will be those who can demonstrate transparency, accuracy, and adaptability.
At TS Cyanergy, we’re here to help you move from compliance stress to confidence. Whether you’re managing a single vessel or an entire fleet, our tools and expertise will keep you on course.
Get a Demo of the CE2 Monitor
Cyanergy has developed an advanced system that tracks engine performance and measures GHG emissions every minute. The system collects multiple data points in the engine digital controls, and when connected to an exhaust gas analyzer with a flow meter, the system can measure the GHG mass which is required for MEPC 83. The key component is the CE2 Monitor, which is an advanced IoT sensor and, with Cyanergy’s software with stoichiometric modeling, it helps reduce fuel, conserve power, monitor GHG and automate the data collection needed for the regulatory reports.
Click here to request a strategy session and learn how we help shipping companies prepare for MEPC 83 and beyond.