Grimaldi air lubrication system tests report 5.1% fuel reduction

Grimaldi Group’s newbuild ro-ro vessel Eco Valencia has completed testing of an installation of Silverstream Technologies’ air lubrication system, reporting fuel and emissions savings of 5.1% during the initial performance evaluation.

The trials were carried out over a continuous period after Eco Valencia entered service in the Mediterranean, testing the technology at various vessel speeds and in a range of sea states, to calculate and verify fuel and emissions savings. 

The air lubrication system produces a thin layer of micro-bubbles over the flat bottom of the hull, reducing the frictional resistance between the water and the vessel’s surface to improve operational and environmental efficiency.

Eco Valencia is the first of nine Grimaldi Green 5th Generation (GG5G) designs to be installed with the technology. Four vessels with the System onboard have already been built at China Merchants Group Limited’s Jinling Shipyard: Eco Valencia, Eco Barcelona, Eco Livorno and Eco Savona.

“The successful trial of the Silverstream System and the CO2 reduction that it generates is an important step in Grimaldi Group’s aim to lead on shipping sustainability,” said Alberto Portolano, Project Manager of AirLub Design and Integration, Grimaldi Group.

“The trials conducted with the ship in fully loaded service showed the air bubbles covering the entire hull bottom. We are looking forward to continuing to work closely with Silverstream to benefit from their technology on more of our market-leading ro-ro vessels.”

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Rob O'Dwyer

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