Polar communications - Iridium A4 operation card: Polar regions > 70°.
Formula
$$ \text{Op} = \text{Polar communications - Iridium A4} $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $Polar communications - Iridium A4$ | Polar regions > 70° | - | Polar Code / IACS PC |
Sources
- IMO Polar Code (MSC.385(94)).