China Classification Society and China Merchants Group Held Technical Exchange on Air Lubrication-based Drag Reduction Technology

Date:06,12,2020
Description:Along with the increasingly stringent requirements of International Maritime Organization (IMO) on energy conservation and emission reduction, reducing energy consumption of ships has become the development trend in the shipping industry.

Along with the increasingly stringent requirements of International Maritime Organization (IMO) on energy conservation and emission reduction, reducing energy consumption of ships has become the development trend in the shipping industry. As a cutting-edge technology with remarkable energy-saving effect, this air lubrication-based drag reduction technology has received increasing attention from the industry.

Recently, Shanghai Specifications Institute, Hong Kong Branch and Dalian Branch of China Classification Society (CCS) have held special technical exchanges with China Merchants Group Co., Ltd. (hereinafter referred to as China Merchants Group) in the form of video conference on the scientific research topic of applying air lubrication-based drag reduction technology to improve ship energy efficiency. At the conference, Gu Yajuan, the Deputy Director of Shanghai Institute of Specifications, gave a presentation on IMO's preliminary greenhouse gas (GHG) emission reduction strategy, the latest developments of the energy efficiency design index (EEDI) for newbuildings and the energy efficiency existing ship index (EEXI) for operating ships, together with the current EEDI of heavy-duty ships, the application status of existing energy efficiency technologies, and other technical backgrounds. Gu Yajuan also explained in detail the principle of air lubrication-based drag reduction technology, the applicable ship types, the application status, the system composition and technical points, the installation and maintenance, etc. Through the test data on two real ships equipped with air lubrication-based drag reduction systems, it is shown to China Merchants Group that the energy savings generated by this technology have reached 7% - 8% and 12% - 15% respectively. Combined with other energy-saving measures, it will bring the EEDI to the third stage.

Shanghai Specifications Institute timely organized experts to study the relevant technical requirements based on the market demand, then immediately issued the Guide to Air Lubrication-based Drag Reduction System Testing, and shaped relevant technical service products, which can provide complete technical guidance for all parties to apply this new technology.

After being presented with briefings by CCS experts, the two parties held in-depth discussions. China Merchants Group said that CCS was the first to issue the Guide to Air Lubrication-based Drag Reduction System Testing, which fully demonstrated CCS's sensitivity to new technologies in the shipping industry and CCS's advanced scientific research capability. This technical exchange was close to the needs of China Merchants Group and had solved many technical problems hereof. China Merchants Group would continue to work closely with CCS on the application of air lubrication-based drag reduction technology and other energy-saving technologies.