Polar Comms - Iridium Backup

Polar Code Chapter 10 communications - Iridium (GMDSS A4) mandatory for Polar Code voyages beyond INMARSAT coverage.

PolarCommsIridium

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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{GMDSS} = f(\text{lat}, \text{Polar})

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

Source: Polar Code Ch. 10

Polar Code Chapter 10 communications - Iridium (GMDSS A4) mandatory for Polar Code voyages beyond INMARSAT coverage.