Voluntary Emissions Labelling Scheme
To help boat owners choose outboard engines based on comparable emissions, Outboard Engine Distributors Australia (OEDA) has implemented an emissions ratings system known as the Voluntary Emissions Labelling Scheme (VELS) for sales of new outboard engines, similar to energy and water efficiency ratings schemes for household appliances (see the VELS table below).
VELS star ratings
|OEDA Australia Star Rating
||Star Rating Description
||OEDA Emissions Limit*
||High emission: Will be a handful of older design two-stroke engines
||Low emission: Most traditional two-stroke engines
||68.4 - 250
||Very low emission: Some two-stroke direct injection and four-stroke engines
||30 - 64.8
||Ultra low emission: Most two-stroke direct injection and four-stroke engines
||5 - 30
||Super ultra low emission: For future technologies
* The OEDA Emissions Limits rate engines based on Hydrocarbon (HC) and Oxides of Nitrogen (NOx) emissions, measured in grammes per kilowatt per hour.
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