If auxiliary machinery vital to the main propulsion system is not provided with independent duplicate systems, which of the systems listed would satisfy regulations if serviced by two pumps? (46 CFR)
• 46 CFR requirements for duplicate or standby pumps on vital systems • What is considered vital to propulsion versus important but not strictly required in duplicate • Differences between condensate, lube oil service, and fuel oil service systems on a steam or motor vessel
• For each listed system, ask: if this pump fails underway, can I safely continue propulsion, or must I slow/stop immediately? • Which system does 46 CFR specifically require to have at least two pumps, one of which may be driven from the main unit? • Does the regulation treat all three systems the same way, or is there one that clearly has a stricter redundancy requirement for safety of propulsion?
• Look up the exact 46 CFR section on propulsion and auxiliary machinery redundancy (Subchapter F – Marine Engineering). • Confirm which system is explicitly named in the CFR as needing two pumps when not otherwise duplicated. • Verify whether the regulation groups these systems together or specifies only one of them in the “two pump” requirement.
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