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When berthed, ships require electricity to support activities like loading, unloading, heating, lighting and operation of other technical installations. Normally, the ships’ propulsion engines are turned on when berthed and the power needed is provided by auxiliary engines that are running on diesel oil or other fossil-based fuel. Exhausts from the auxiliary engines affect the environment negatively both locally and globally by emissions of COand other air pollutants. 

The use of OPS reduces the negative environmental aspects of ships, such as noise and air pollution, since the ships’ auxiliary engines can be switched off. Moreover, implementation of OPS provides an opportunity not only to improve air quality, but also to reduce emissions of CO2, one of the main contributors to global warming. 

OPS update Jan 2020