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ClassNK releases EEDI calculation software

ClassNK has announced the development of a new software system, PrimeShip-GREEN/PSTA (Progressive Speed Trial Analysis), to help shipyards comply with EEDI requirements.

Amendments to MARPOL Annex VI introducing an Energy Efficiency Design Index (EEDI) for the prevention of pollution from ships came into force from January 2013, enforcing mandatory EEDI calculation and EEDI regulation values for vessels contracted from 1 January 2013 onwards.

The new software from ClassNK is used to analyse the results from speed trials and calculates a ship’s speed in calm sea conditions.

When calculating EEDI, external factors such as the wind, waves, tides, shallow waters, and displacement during speed trials can be corrected for to allow for higher accuracy when determining a ship’s speed in calm sea conditions, so ClassNK has also developed the software to provide a straightforward method for compensating for external factors in progressive speed trial analysis.

This analysis method is based on ISO Standard 15016:2002, recognised in the IMO EEDI Guidelines '2012 Guidelines on survey and certification of the Energy Efficiency Design Index (EEDI)'.

PrimeShip-GREEN/PSTA is provided to shipyards free of charge, with application forms available for download from the ClassNK website.

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