What is the purpose of keeping an engine room log (recording readings such as temperatures, pressures, and running hours at regular intervals), beyond simply satisfying a paperwork requirement?

A. Log entries are only ever reviewed if there is an accident, and serve no other purpose

B. Log readings are estimated rather than actually taken, as exact figures are not important

C. Regular logged readings establish what "normal" looks like for each piece of equipment, so that a gradual drift away from normal (e.g. a slowly rising bearing temperature or falling oil pressure over several watches) can be identified early — a single reading in isolation may look acceptable, but a trend visible across the log can reveal a developing problem long before it would trigger an alarm

D. The log only needs to be filled in when something goes wrong, not during normal operation

A. Only that the pump has been switched off

B. That the engine logbook has been updated first

C. Nothing extra — thermal oil drains are routine and can be opened immediately

D. That the system has cooled and depressurised, and you are positioned clear of the drain point's discharge path

A. Treat the gap as a hazard in its own right: apply a suitable cooling/depressurising period and full PPE before proceeding, and raise the procedure gap with the Chief Engineer

B. Delegate the task to a junior rating without further briefing, since the procedure covers it

C. Skip the task until a class surveyor is on board

D. Follow the procedure exactly as written — if it doesn't mention cooling or PPE, they're not required