“Yes, but only if it is a reversible two-stroke engine (not all are – many use controllable pitch propellers). The starting air distributor must be switched to ‘astern’ position, and the camshaft (if not electronic) must be axially shifted hydraulically before admitting air. This takes 5-8 seconds. During maneuvering, I ensure the turning gear is interlocked off.”
Here are some sample questions and answers to help candidates prepare for the Slow Speed section of the Engine Management test: Stcw Test Engine Management Slow Speed Answers
Note: Actual STCW exam requirements vary by flag state and administration. Always refer to the latest IMO Model Course 7.04 (Engine Room Simulator) and manufacturer technical guides. “Yes, but only if it is a reversible
| Question | Answer Summary | |----------|----------------| | What is the purpose of a starting air distributor? | To sequence starting air to cylinders in firing order. | | Why is a slow speed engine fitted with a turning gear? | To prevent thermal distortion & hydraulic lock before starting. | | What causes “surging” of the turbocharger? | Mismatch between air supply & demand – often due to fouled turbine nozzles, scavenge obstruction, or rapid load change. | | How do you test a cylinder relief valve? | With compressed air after removal – must lift at 10% above peak firing pressure. | | What is “piston rod stuffing box” function? | To prevent crankcase oil from entering scavenge space & to prevent blow-by gases entering crankcase. | During maneuvering, I ensure the turning gear is