Battery - Emergency component card: Lead-acid VRLA. 6-hour backup per SOLAS IV/13.
Formula
$$ \text{System} = \text{Battery - Emergency} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Battery - Emergency$ | Lead-acid VRLA | - | class rule + maker |
Sources
- Class society rules + system OEM.