Mive Eco - Marine Exhaust Systems - Italy


Mive-Eco and HUG Engineering announce the agreement with the Azimut|Benetti Group for the installation of exhaust systems complete with SCR in accordance with the new IMO Tier III regulation.

The Azimut Benetti Group, world leader in the production of super yachts, is the first company in the nautical sector to have signed an agreement with Mive Eco for the supply of exhaust systems equipped with the SCR system for the reduction of harmful emissions generated by propulsion.

Mive Eco, a company already world leader in the production of exhaust gas systems, starting this year will integrate its systems with the SCR systems of Hug Engineering, a company also a leader in its market segment.

An agreement with the world’s leading manufacturer of super yachts which is set up as a real innovation for the sector. In fact, the collaboration with two excellences such as Mive Eco and Hug Engineering will allow Azimut Benetti to guarantee the possibility of purchasing a “low emission” version for its models over 24 metres.

In fact, the collaboration with two excellences such as Mive Eco and Hug Engineering will allow Azimut Benetti to guarantee the possibility of purchasing a “low emission” version for its models over 24 metres.

Latest generation SCR
Mive Eco has integrated this latest generation SCR into its plants, offering Azimut Benetti a complete system of all connection pipes, risers, support structures and highly performing insulation in order to guarantee perfect operation, compliance with back pressure, surface temperature on the components and the safety of the yacht, despite the limited space available.

The need is to meet the limit level for NOx emissions defined by IMO as “Tier III” which, starting from 2021, has been extended to yachts of less than 500 gross tonnage and longer than 24 meters, and has become a mandatory requirement to navigate in ECAs (Controlled Emissions Areas).

Years before the entry into force of the new emission limits, Azimut-Benetti had asked its supplier of exhaust lines Mive Eco to integrate an “SCR” in the engine room for at least 8 yacht models, without any reduction of the areas habitable space or garage volume and impact on engine power.

Mive Eco had taken up the challenge by involving Hug Engineering, its historical partner, which has been supplying its best-in-class products to the main shipyards in the European area since 2016, when the IMO TIER III emissions standard had entered into force for all yachts over 500 gross tonnage.

Mive Eco reworked its exhaust systems and simultaneously Hug Engineering finalized the development of a completely new “CCV” (Cordierite Coated Vanadium) catalyst, which, after 3 years of laboratory and bench tests, was “deliberated” managing to meet performance targets in the limited space of an engine room.

The second challenge, after the catalytic one, was to identify the “system” capable of adapting to the size of the engine, in less than 50cm of height, resisting high mechanical stresses due to speeds exceeding 30 kn and temperatures up to 500°C.

Mive Eco and Hug after months of studies have developed the first versions of exhaust gas systems integrated with compact SCR suitable for yachts over 24 meters and under 500 GT.

Once it was understood that the system could work properly, Hug Engineering started the certification process in order to obtain an EAPP certificate compliant with the IMO TIER III standard based on the IMO Tier II engine. In this way it is possible to use SCR in the ECA area and possibly use the Tier II version engine in areas where it is not yet easy to refuel AdBlue (Urea) on board.

To date it is possible to state that the joint efforts undertaken between 2020 and 2021 by the three companies involved, Azimut Benetti, Mive Eco and Hug Engineering, have made it possible to achieve the objective of having a feasible solution both technically and commercially, which can be immediately offered to any customer interested in buying an ecological yacht, having full freedom to sail anywhere in the world and being able to count on the full value of the vessel at the time of resale.

Marco Cristofori
Marco Cristofori
Chief executive office

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Mive Eco

Mive Eco is the world's leading company in the design, engineering and production of exhaust systems for all types of motor yachts, sailing, military and passenger vessels.

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