Mitsubishi Heavy Industries Marine Machinery & Engine Co., Ltd. (MHI-MME) completed 50 units of deliveries on the retrofit propeller since 2013. The retrofit propeller is suitably designed for slow steaming conditions by the limitation of engine load, aiming at improvement of fuel efficiency.
Moreover, MHI-MME applies the design for the retrofit propeller to Mitsubishi Advanced Propellers (MAP) Mark-W, which propeller was launched in 2010 and can improve the propeller efficiency without sacrificing cavitation margin.
The company mainly supplies the retrofit propellers to the large container carrier in which the slow steaming is applied and the efficiency improvement is expected, and also supplies them to the LNG carrier and Tanker. The delivery record includes not only Japanese ship owners’ but also overseas ship owners’ projects.
Additionally, MHI-MME carries out the evaluation of the propeller efficiency improvement after propeller retrofitting and confirmed that the propeller efficiency improvement in a certain vessel reached about 8%, up to the limitation of engine load.
Furthermore, when retrofitting a propeller, it also proposes to buy the propeller currently installed on the customer’s vessel, thereby offering an opportunity for customers to reduce their initial investment. In particular, when the vessel is docked at Chinese shipyard, Changzhou Zhonghai Marine Propeller Co., Ltd. (CZZH), a licensee of Marine propeller of MHI-MME can buy the propeller currently installed on the customer’s vessel from the customer.
Source & Image credit: MHI-MME
