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ClassNK updates EEDI software

ClassNK reports that it has released an updated software system that calculates and analyses a ship’s speed for Energy Efficiency Design Index (EEDI) calculation in line with the latest revised IMO guidelines.

{mprestriction ids="1,2"}The PrimeShip-GREEN/ProSTA ver.ITTC application has been developed in compliance with the latest International Towing Tank Conference (ITTC) 2017 Guidelines (ITTC Recommended Procedures and Guidelines 7.5-04-01-01.1, Preparation, Conduct and Analysis of Speed/Power Trials) for EEDI verification.

MARPOL Annex VI states one parameter for calculating the EEDI of a ship’s speed in calm sea conditions based on speed trial results. To eliminate the effects of external factors during a sea trial (wind, waves, current, water depth, sea temperature) and provide a way to calculate and analyse a ship’s speed in calm sea conditions, the IMO had previously assigned two specific methods.

These were described in IMO’s 2014 Guidelines on survey and certification of the EEDI, specified as ISO 15016:2015 and the ITTC 2014 Guidelines. However, at MEPC 73 in October 2018, the IMO Guidelines were revised to require compliance with either ISO 15016:2015 or the ITTC 2017 Guidelines.

The original PrimeShip-GREEN/ProSTA software tool has been in use since 2015 for calculating a ship’s speed in compliance with ISO 15016:2015, and has now been updated to provide technical support regarding ITTC 2017 Guidelines.{/mprestriction}

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