Energy Efficiency

On MEPC 76 in June 2021 the IMO adopted amendments to Marpol Annex VI, introducing new regulations to reduce Greenhouse Gas Emissions in shipping. With a reduction of 50% by 2050, ambitious goals were set forcing stakeholder to improve efficiency in all aspects of shipping. As part of the new regulations EEXI, CII and SEEMP were introduced, and shipowners and operators urgently need to prepare to keep their vessels compliant.

Shipowners and operators urgently need to prepare for these challenges and start looking at in order to keep their vessels compliant.

With our expert knowledge and vast know how of ship technologies and efficiency we can help you to prepare for these challenges. To stay compliant, the technical approach (EEXI) as well as operational performance (CII, SEEMP) need to be analysed and fulfilled. All these measures require intensive analysis of ships technical systems, performance and their impact on the environment.

SEEMP, CII , EEXI How is it all related?


Energy efficiency starts by looking at the Ship Energy Efficiency Management Plan (SEEMP).

The SEEMP is primarily intended to be a management tool for ship-board use and aims to improve the energy efficiency of ship operations.

SEEMP should be customised to the characteristics and needs of individual companies and
ships therefore it is a ship-specific plan.


EEXI means (Energy Efficiency Design Index).

It is a technical approach and sets the C02 emitted by a vessel in relation to its transport work expressed by speed and deadweight of the ship.  Calculation guidelines refer to the calculation guidelines of the EEDI, with a few amendments. The EEXI applies to all vessels above 400 GT falling under Marpol Annex VI, also older vessels not falling into the scope of the EEDI.  

The EEXI of your vessel can be calculated by our homemade calculator.

After that the technical file can be issued to you. 

Here you can access our free calculator and read more about the EEXI.


CII means (Carbon Intensity Indicator).

The CII is relevant for ships over 5000 GT and basically puts the CO2 emission in relation to the transported cargo and distances sailed. It is therefore an operational approach, which however will get stricter every year.

Read More about the CII here

The EEXI as well as the CII come into force in

In case you have any questions regarding the CII or the EEXI you can contact us here.

have a question or need advice ?

We are happy to advice you, we understand that every customer has special requirements.

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abh INGENIEUR-TECHNIK GmbH is an owner-operated medium-sized engineering consultant based in the port city of Emden, Northern Germany.

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