Chapter III - Engine Department
The engine ladder
Chapter III mirrors the deck: III/4 ratings forming part of an engine room watch, III/5 able seafarer engine, III/1 officer of the watch (engine), III/2 second engineer and chief engineer, III/6 electro-technical officer, III/7 electro-technical rating, plus III/3 near-coastal variants.
What the engineer on watch owns
The engineer officer of the watch is responsible for the safe and efficient operation of propulsion and auxiliary machinery, and must keep the bridge informed whenever a defect could affect propulsion, steering, electrical power or safety. In a periodically unattended machinery space (UMS) the alarm system must be able to summon the duty engineer, and the watchkeeper must reach the machinery space promptly and understand alarms, orders and the working language of the ship.
Traps
- Confusing able seafarer engine (skilled rating with broader competences) with a rating forming part of an engine room watch (watch duties only).
- Assuming an ETO is an engineer officer; the electro-technical officer holds a distinct certificate under III/6.
- Assuming UMS means nobody is on duty. It means nobody is permanently in the space; a duty engineer remains assigned.
- Forgetting that changeover to bridge control or local control requires agreement between bridge and engine room and an announced, monitored handover.
Worked example
During the 0400 watch the duty engineer sees main engine lubricating oil pressure fluctuating. The correct sequence is: inform the bridge immediately, reduce load or change over as instructed, investigate with the duty rating, and log the event. The examiner is looking for the bridge notification and the log entry, not the technical repair.
Rule of thumb: if machinery trouble can affect the ship's ability to manoeuvre, the bridge hears about it first and hears about it at once.