Mitsui O.S.K. Lines, Ltd. announced that Propeller Boss Cap Fins (PBCF), sold by its group company MOL Techno-Trade, Ltd. (MOL Tech; President: Hirokazu Hatta; Headquarters: Chiyoda-ku, Tokyo), was certified as the “Best-selling Energy-Saving Ship Appendage Brand (Cumulative)”, by Guinness World Records(Note 1), and received the official certificate on December 23, 2021. PBCF was co-developed by .
Mitsui O.S.K. Lines, Ltd. , together with Ouchi Ocean Consultant, Inc., the National Maritime Research Institute (NMRI) of National Institute of Maritime, Port and Aviation Technology (MPAT), Smert Design Co., Ltd., Graduate School of Frontier Sciences of The University of Tokyo, West Japan Fluid Engineering Laboratory Co., Ltd., Nippon Kaiji Kyokai (ClassNK), and Mirai Ene .