USCG Exam PracticeAuxiliary machinery and mechanical systems
Under 46 CFR §56.50-80, when pressure or gravity-forced lubrication is employed for main propelling machinery, what additional equipment is required?
- A. A gravity tank with sufficient capacity for 30 minutes of operation
- ✓ An independent auxiliary lubricating pumpCorrect
- C. A duplex filter arrangement with bypass valving
- D. An automatic shutdown device triggered by low oil pressure
Why B is correct
46 CFR §56.50-80(b) requires that when pressure or gravity-forced lubrication is employed for main propelling machinery, an independent auxiliary lubricating pump must be provided. The other options, while plausible engineering practices, are not stated as the specific requirement in this paragraph.
Cited:46 CFR §56.50-80