🔍 Key Concepts

• Periodically unattended (UMS) engine room operational requirements • Role and watchstanding duties of the duty engineer vs. daywork staff • Safety considerations for fuel oil transfer operations (risk of leaks, alarms, fire)

💭 Think About

• In a periodically unmanned engine room, who is formally responsible for machinery operations and alarms during each watch period? The first assistant or the duty engineer? • When is it safer and more practical to conduct internal fuel transfers: while the space is manned and supervised, or while it is unmanned and relies only on alarms? • Look at which option best reflects standard safe-engineering practice: responsibility assigned to the right person, and timing that allows immediate human response if something goes wrong.

✅ Before You Answer

• Identify which choices correctly assign responsibility to the duty engineer in a UMS engine room, and which do not. • Eliminate any choice that suggests conducting fuel transfers when the engine room is unmanned and no one can respond quickly to a leak or alarm. • Focus on the option that combines: duty engineer responsibility PLUS transfers carried out when the engine room is manned/supervised, consistent with safe practice.