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Air Cavity System News

21 Jul 2023

Damen's DACS to Boost Fuel Efficiency of Amisco's Cargo Vessel

Credit: RINA

Damen Shipyards has secured the first order for its Damen Air Cavity System (DACS) with the system set to be installed on a cargo vessel owned by the shipping company Amisco. Damen has developed DACS to support maritime operators in their efforts to reduce fuel consumption and emissions."DACs is an air lubrication system, borne out of a collaboration between Damen and the Delft University of Technology (TU Delft). It maintains a thin layer of air over the flat bottom of a vessel’s hull, reducing resistance in the water, thereby lowering drag and friction.

06 Mar 2012

Air Cavity System Aims to Help Reduce Emissions

DK Group will install its emissions-reducing Air Cavity System (ACS) technology on a 12,580 deadweight ton (DWT) multi-purpose vessel owned by Danish shipowner and ship management company Dannebrog Group. The deal marks the first time that DK Group's patented air lubrication technology has been installed on an international commercial vessel, and represents significant progression in the adoption of clean technology within the shipping industry. The Air Cavity System uses air bubbles in the boundary layer of the vessel to reduce frictional resistance between the water and the hull surface. The fuel efficiency generated by ACS will be up to 10 percent and will depend on vessel type and size. The investment payback period will range between 18 months and 3 years.

09 Mar 2010

Air Cavity System for Existing Vessels

Photo courtesy Blue Communication

DK Group announced the launch of the Air Cavity System (ACS) Retrofit for existing vessels. The new technology - a development of the original ACS that was specifically designed for new vessels - can be retrofitted at standard drydock or in most ship and repair yards in just 14 days. ACS Retrofit, which seatrials have shown can reduce fuel consumption by up to 15% depending on vessel type, has an average fuel cost payback of under two years at current bunker fuel prices, with some ship classes achieving substantially better payback periods.