Research theme for competitive and other funds (1)：
2012 - 2015 省エネルギー型アンチローリングシステムの開発
Papers (72)：
Ryohei Yoshioka, Makoto Arai, Yoshiaki Hirakawa, Ning Ma, Kazuo Nishimoto. Relative Motions of FLNG and LNG Carriers Arranged Side by Side and an Assessment of Their Operation. One Petro. 2019. Vol.29. 2
Shaoze Luo, Ning Ma, Yoshiaki Hirakawad. Evaluation of resistance increase and speed loss of a ship in wind and waves. Journal of Ocean Engineering and Science. 2016. 1. 3. 212-218
Ocean Wave Measurements Utilizing Ultra-Small-Buoy
(8th PUL Meeting (Port-city University League) 2014)
R&D on New Stern Boat Deployment and Recovery System from Running Ship
(5th PUL Meeting (Port-city University League) 2011)
Education (3)：
- 2002 Yokohama National University
- 2001 Yokohama National University Graduate School, Division of Engineering
- 1999 Yokohama National University Faculty of Engineering
Professional career (3)：
Doctor of Engineering (Yokohama National University)
Master of Engineering (Yokohama National University)
Bachelor of Engineering (Yokohama National University)
Work history (8)：
2018/04/01 - 現在 Yokohama National University Graduate school of Engineering Science Department of Mechanical Engineering and Materials Science Specialization in Ocean-Space Associate Professor
2013/04/01 - 現在 Yokohama National University Faculty of Engineering Associate Professor
2011/04/01 - 現在 Yokohama National University College of Engineering Science Department of Architecture,Infrastructure,Ocean Engineering and Ecosystem Science Systems Design for Ocean-Space Program Associate Professor
2001/04/01 - 現在 Yokohama National University Faculty of Engineering Division of Systems Research Associate Professor
2011/07/01 - 2013/03/31 Yokohama National University Research Associate
2007/04/01 - 2011/06/30 Yokohama National University Faculty of Engineering Research Fellow
2002/04/01 - 2007/03/31 Yokohama National University Faculty of Engineering Research Assistant
