The installation of a set of Dealfeng Rotor Sails on a 5,000-ton class product oil tanker has been completed, following a partnership between Dealfeng New Energy Technology and Haiyue, signed in October 2022. The companies say the vessel will be delivered in early 2024.  

Each Dealfeng Rotor Sail, which measures 4m by 16m (13 feet by 52.5 feet) is made of lightweight composite material, and generates forward thrust as the wind causes pressure difference around the rotating rotor while a vessel is underway. The companies say a vessel can achieve a reduction of around 8% of fuel and GHG emissions, while maintaining speed and travel time.  

Additionally, following the signing of a retrofitting contract with Offshore Oil Engineering Co., Ltd. (COOEC), Dealfeng has installed two sets of 18m x 4m Dealfeng rotor sails on a 25,000 DWT deck carrier classed by China Classification Society (CCS). The vessel will be delivered on December 20, 2023, and is expected to achieve fuel savings of around 10%.

Dealfeng, based in Tianjin, China, says it will continue to work towards both energy-saving innovative technologies and the reduction of GHG emissions, helping domestic and international ocean vessels to meet the efficiency and emission-reducing policy requirements of EEDI, EEXI, CII and EU ETS.