POLARIS Risk Index Outcome (RIO) for up to five ice-concentration bands per MSC.1/Circ.1519 - rapid operational check.
Formula
$$ RIO = \sum C_i \cdot RIV_i $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $C_i$ | Concentration of ice type i | tenths | ice chart |
| $RIV_i$ | Risk Index Value (Ice Class vs type) | - | MSC.1/Circ.1519 Table 1 |
Sources
- MSC.1/Circ.1519.