Classification society DNV has approved CSSC Shanghai Marine Energy Saving Technology’s (CMES) 5 m x 35 m tilting type wind assisted rotor system.
Ready for installation on DNV-classed commercial vessels, the certification marks the first domestically developed rotor sail system in China to achieve such recognition under DNV’s wind assisted propulsion system (WAPS) rules.
The CMES-Tech tiltable rotor system features a retractable and adjustable design, enabling the rotor to adapt to varying draft and clearance conditions, and retract during cargo operations to avoid interference with deck/hatch operations or port infrastructure. Both wind propulsion efficiency and safety are boosted thanks to intelligent sensing and automatic control to adjust rotor operation which are based on real-time wind conditions.
“Receiving the DNV TADC [type approval design certificate] is a landmark for China’s green-shipping industry and a strong validation of our design’s maturity, structural integrity and operational practicality,” said Dr. Huang Guofu, general manager of CMES-Tech.
The TADC process involved DNV’s classification experts reviewing all mechanical, structural and electrical design documentation, along with assessing the system’s suitability for shipboard application under realistic operational and environmental conditions. The rotor system has also proven its sturdiness under extreme load conditions by passing a 120 percent overload structural test.
