Ice-independent operation operation card: Self-capable PC4+ without escort.
Formula
$$ \text{Op} = \text{Ice-independent operation} $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Ice-independent operation$ | Self-capable PC4+ without escort | - | Polar Code / IACS PC |
Sources
- IMO Polar Code (MSC.385(94)).