GMDSS - Sea Area Coverage Check

GMDSS sea-area (A1 / A2 / A3 / A4) determination from voyage distance from coast - drives radio-equipment carriage.

GMDSSSea areasSOLAS IV

Loading calculator…

This calculator requires JavaScript to compute its result. The formula, symbols, and regulatory sources are shown in the Formula section below.

Formula, assumptions, and limits

\text{Area} = f(\text{distance}, \text{latitude})

Symbol	Meaning	Unit
$A1/A2/A3/A4$	GMDSS sea area

Source: SOLAS IV Reg. 2

GMDSS sea-area (A1 / A2 / A3 / A4) determination from voyage distance from coast - drives radio-equipment carriage.