The Chief Engineer is the senior-most officer in a ship’s engine department, holding full responsibility for the main engine, auxiliary machinery, electrical systems, and all mechanical operations essential to the vessel’s function.
Scope of Responsibility
- Overall responsibility for main engine, generators, boilers, and all machinery systems
- Planning and overseeing maintenance schedules (Planned Maintenance System)
- Managing the engine room team, including watchkeeping engineers and ratings
- Fuel, lubricating oil, and spare parts management
- Compliance with MARPOL requirements for engine room discharges and emissions
Certification
Reaching Chief Engineer requires clearing the MEO Class I competency exam, following required sea time as Second Engineer — the culmination of the engine department’s career progression, typically 10-15+ years from cadet.
Chief Engineer and the Master
While the Master holds overall vessel command, the Chief Engineer has full technical authority over the engine room and machinery — the two work in close coordination, particularly during maneuvering, port operations, and any emergency involving propulsion or power systems.
Exam Relevance
Chief Engineer-level responsibilities span the full MEO Class I syllabus, covering advanced machinery systems, management, and regulatory compliance.