Natsuhiko Otsuka
Hokkaido University
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Featured researches published by Natsuhiko Otsuka.
Maritime Policy & Management | 2018
Masahiko Furuichi; Natsuhiko Otsuka
ABSTRACT The Mega-ships, the maximum containerships represented by 20,000TEU-class (LOA:400m, Breadth: 60m, Draft: 16m) which are able to transit both the Malacca Strait and the Suez Canal, have emerged in 2013, aiming at lower shipping cost by economy of scale. At the same time, they inevitably increased port calls in a rotation to collect more cargo demand, resulting in the longer transit time than ever before. Taking this trend into account, the authors proposed the quick delivery scenario between East Asia and Northwest Europe by the NSR (Northern Sea Route)/SCR (Suez Canal Route)-combined shipping, of which 4,000 TEU ice-class containership transits the NSR during the summer season and the SCR in the wintertime, based on a year-round scheduled operation. The quick delivery scenario gives the shorter transit time at an affordable shipping cost depending on the NSR navigable season length. However, the quick delivery scenario cannot avoid uncertainties in navigation especially via the NSR in the summer season, due to rough weather, sea ice, low visibility and icing in the icy water section of the NSR. The authors preliminarily concluded that a year-round scheduled operation of the NSR/SCR-combined shipping will be secured, if the practical navigation schedule is appropriately prepared.
Maritime economics and logistics | 2015
Masahiko Furuichi; Natsuhiko Otsuka
22nd International Conference on Port and Ocean Engineering under Arctic Conditions (POAC'13)Federation of Finnish Learned SocietiesABSEspoo, City of, FinlandVTT Technical Research Centre of FinlandSTX FinlandStatoil ASAAker ArcticArctech | 2013
Natsuhiko Otsuka; Koh Izumiyama; Masahiko Furuichi
Archive | 2014
Masahiko Furuichi; Natsuhiko Otsuka
Archive | 2014
Masahiko Furuichi; Natsuhiko Otsuka
Proceedings of the International Conference on Port and Ocean Engineering Under Arctic Conditions | 2005
Koh Izumiyama; Shigeo Kanada; Shotaro Uto; Natsuhiko Otsuka
The Cryosphere Discussions | 2018
Takuya Nakanowatari; Jun Inoue; Kazutoshi Sato; Laurent Bertino; Jiping Xie; Mio Matsueda; Akio Yamagami; Takeshi Sugimura; Hironori Yabuki; Natsuhiko Otsuka
The Cryosphere | 2018
Takuya Nakanowatari; Jun Inoue; Kazutoshi Sato; Laurent Bertino; Jiping Xie; Mio Matsueda; Akio Yamagami; Takeshi Sugimura; Hironori Yabuki; Natsuhiko Otsuka
Journal of Japan Society of Civil Engineers | 2018
Natsuhiko Otsuka
Journal of Japan Society of Civil Engineers | 2018
Natsuhiko Otsuka; Xiaoyang Li; Koh Izumiyama