As shown in the illustrated one-line diagram of a two-tiered emergency power system for a passenger ship, what statement is true? EL-0166

Correct Answer: Option B — On a loss of normal ship's power, the temporary emergency loads power source is battery (from AC/DC UPS "B"), whereas the final emergency loads power source is the emergency generator.

Two-tiered passenger ship emergency power systems provide uninterruptible transitional power via UPS units for temporary loads while the emergency diesel generator starts and assumes the final emergency load distribution requirements.