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Discharges

Ballast water

 

WW’s fleet satisfies applicable regulations for ballast water exchange. One WW vessel is currently testing a state-of-the-art ballast water treatment system offered by Wilhelmsen Technical Solutions.


The system, the Unitor Ballast Water Treatment System, has very low energy consumption and footprint compared to its competitors and can be installed while the vessel is in operation. It is anticipated that the system will have all necessary IMO approvals in place during the first half-year 2010.


The system is also being tested on a large gas carrier owned by BW Gas.

Bilge water


WW’s new vessels have separators reducing the oil content in the bilge water down to five parts per million (ppm).

 

International regulations require that less than 15 ppm oil remain when bilge water is discharged into the sea, and WW’s fleet is thereby exceeding existing regulations.

 

Chemicals and refrigerants

 

Chemicals and refrigerants WW is concerned to use the least harmful chemical products and to reduce consumption of refrigerants.

 

In cooperation with the Norwegian NGO Bellona, WW established an improved list of greener chemicals in 2007. The list is being used on all vessels owned or controlled by WW. WW also aims to reduce the volumes of chemicals and refrigerants used, and keep statistics of purchases and consumption.

 

Antifouling

 

All WW vessels use tin-free antifouling. To ensure a smooth and efficient hull, all vessels have their underwater surfaces cleaned at least once a year.

 

WW also tries out new and more sophisticated low-toxic low friction coating systems. By contributing to a smoother hull surface, these products are expected to reduce fuel consumption by up to 5% compared with a vessel using conventional antifouling. As of end of 2009, 13 WW vessels were coated with advanced antifouling systems.

 

Oil spills

 

In 2009, no oil spills were reported from vessels owned or controlled by WW.

 

Oil spills from WW vessels are not acceptable, and the group continuously improves solutions to reduce the likelihood of oil spill incidents.

 

 

Waste

 

All waste on WW vessels will be sorted and recycled.

 

WW launched a waste management programme during 2006 in cooperation with Bellona, a Norwegian NGO. A number of trash compactors have been installed onboard. Land-based facilities for receiving the waste need to be developed in order to get full
benefit from this initiative.

 

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