What Is SEEMP?
The Ship Energy Efficiency Management Plan (SEEMP) is a mandatory document required under MARPOL Annex VI for every ship of 400 GT and above. Adopted by the IMO as part of the broader energy efficiency regulatory framework, SEEMP provides a structured approach for shipping companies to monitor, manage, and continuously improve the energy efficiency of their vessels. It serves as the operational counterpart to the technical EEXI standard, ensuring that energy efficiency is addressed not only through ship design but also through day-to-day operational practices.
SEEMP Structure: Parts I, II, and III
SEEMP is organized into three distinct parts, each addressing a different aspect of energy efficiency management. Part I focuses on energy efficiency measures and best practices that the ship operator commits to implementing, such as voyage optimization, speed management, hull and propeller maintenance, and weather routing. Part II addresses the ship-specific fuel oil consumption data collection plan required under the IMO Data Collection System (IMO DCS), specifying how fuel consumption, distance travelled, and hours underway are recorded and reported annually to the flag state. Part III, introduced under the 2021 MEPC 76 amendments that took effect in January 2023, requires ships to develop a plan for managing their Carbon Intensity Indicator (CII) rating, including corrective action procedures if the vessel receives a D or E rating for three consecutive years.
SEEMP and Decarbonization
SEEMP is a central element of the IMO's decarbonization strategy, connecting technical standards like EEXI with operational metrics like CII. By requiring ship operators to set efficiency targets, track performance, and implement improvement measures, SEEMP creates a continuous improvement cycle that drives down carbon intensity over time. The plan must be reviewed and updated regularly, especially when operational changes affect energy performance or when CII ratings indicate deteriorating efficiency.
Ship management software plays a critical role in SEEMP implementation by automating fuel consumption data collection, calculating CII projections in real time, generating the reports required for IMO DCS submissions, and alerting operators when corrective actions are needed. Digital platforms eliminate the manual data gathering that makes SEEMP compliance burdensome and error-prone, enabling ship managers to focus on implementing genuine efficiency improvements rather than paperwork.