Counter-rotating type tidal stream power unit: Excellent performance verified at offshore test

Isao Samura, Kazuo Kuwano, Ryunosuke Kawashima, Taizo Oda, Takumi Imakyurei, Hideyuki Inoue, Yuuichiro Tokunaga, Toshiaki Kanemoto, Kazuyoshi Miyagawa, Toshihiko Miwa, Hiroshi Yamanokuchi