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From January 1, 2015, the maximum allowable sulphur content of marine fuel used within Emission Control Areas (ECAs) as specified by MARPOL Annex VI will be 0.10% m/m. The exception will be for ships using equivalent means as per MARPOL Annex VI regulation 4 such as an approved exhaust gas cleaning system.

Lloyd's Register previously developed the Fuel Oil Bunkering Analysis and Advisory Service (FOBAS) Fuel Changeover Calculator in order to provide the possibility to make an estimate of the time required to switch from high to low sulphur fuel and assist in meeting the required sulphur limits at engine inlet.

A new version of the Fuel Changeover Calculator has been developed to cater for the new 0.10% m/m sulphur requirement and is now available at the address below under the section entitled 'resources'.

http://www.lr.org/en/marine/consulting/fobas/

According to Lloyd's Register, the new version of the calculator is suited for segregated low and high sulphur fuel oil systems where mixing takes place after service tank.

Lloyd's Register advises that the guidance notes provided with the calculator are read prior to using the tool.