GMDSS sea-area (A1 / A2 / A3 / A4) determination from voyage distance from coast - drives radio-equipment carriage.
Formula
$$ \text{Area} = f(\text{distance}, \text{latitude}) $$Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $A1/A2/A3/A4$ | GMDSS sea area | - | SOLAS IV Reg. 2 |
Sources
- SOLAS IV Reg. 2.