SEEMP
Ship Energy Efficiency Management Plan: mandatory document detailing measures to monitor and improve ship energy efficiency.
In practice
Annually updated by chief engineer / master; tracked KPIs include cargo-tonne nautical mile fuel consumption. SEEMP Part III drives CII rating corrective action where required.
Regulatory detail & full definition
SEEMP — mandatory document under MARPOL Annex VI Reg. 26 detailing the operational measures the ship will implement to monitor and improve energy efficiency. SEEMP Part I covers operational measures (voyage planning, weather routing, hull/propeller cleaning, trim optimisation); SEEMP Part II covers IMO Data Collection System fuel consumption reporting; SEEMP Part III (effective 2023) covers CII compliance and corrective action where the ship is rated D for three years or E for one. The plan is approved by the Administration and reviewed at intermediate and renewal MARPOL surveys.
Authoritative source: MARPOL Annex VI (Air pollution) ↗
Related
Source: MARPOL Annex VI Reg. 26
High confidence
Editorial confidence: how we grade.