Additional optional sub-notations available for ENVIRO+ ships - BWT, EGCS, Low-SOx, ShorePower (SP), UWN.
Formula
$$ \text{ENVIRO+}(\text{BWT, EGCS, SP, UWN}) $$
Symbol legend
| Symbol | Meaning | Unit | Source |
|---|---|---|---|
| $BWT$ | Ballast water treatment | - | ABS ENVIRO+ |
| $EGCS$ | Exhaust-gas cleaning system | - | ABS ENVIRO+ |
| $SP$ | Shore-power connection IEC 80005 | - | ABS ENVIRO+ |
| $UWN$ | Underwater radiated noise | - | ABS ENVIRO+ |
Sources
- ABS Guide for Environmental Protection Notations.