POLARIS - Risk Index Outcome (RIO)

POLARIS Risk Index Outcome (RIO) for up to five ice-concentration bands per MSC.1/Circ.1519 - rapid operational check.

POLARISPolar CodeIce

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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

RIO = \sum C_i \cdot RIV_i

Symbol	Meaning	Unit
$C_i$	Concentration of ice type i	tenths
$RIV_i$	Risk Index Value (Ice Class vs type)

Source: MSC.1/Circ.1519

POLARIS Risk Index Outcome (RIO) for up to five ice-concentration bands per MSC.