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Journal of the Japan Society of Naval Architects and Ocean Engineers | 2017

Evaluation of Resistance and Propulsion Performance by Shallow water Tests and Powering in Shallow Water

Junichi Fujisawa; Ryohei Fukasawa; Masaru Tsujimoto

When a ship is carried out speed/power trials in shallow water, the measured power is larger than that in deep water. To correct the effect the method is recommended by ITTC and standardized by ISO. In ITTC a method by Raven, which corrects viscous resistance considering the squat effect is proposed to alter the method by Lackenby which corrects the speed. In order to evaluate the shallow water performance, resistance and propulsion tests were carried out using a tank which can perform the tests in both deep and shallow waters. The engine power estimated by the results of the tank tests, Lackenby method and Raven method have been compared and evaluated. From the evaluation it is clarified that Raven method shows lower engine power than Lackenby method and can be applied for the shallow water correction by means of conservative correction.


TRANSACTIONS OF THE WEST-JAPAN SOCIETY OF NAVAL ARCHITECTS The 99th West-Japan Society of Naval Architects Meeting (Joint Autumn Meeting of Three Societies of Naval Architects in Japan) | 2000

Reduction of Pressure Fluctuations Induced by Cavitating Propellers due to Air Injection through the Hull at the Stern of a Ship

Yoshitaka Ukon; Junichi Fujisawa; Tatsuro Kudo


Archive | 2012

PROPELLER WITH SMALL DUCT, AND SHIP

Noriyuki Sasaki; Hideki Kawashima; Junichi Fujisawa


Archive | 2010

Catamaran with double stern shafts

Junichi Fujisawa; Nobuyuki Hirata; Yasutaka Kawanami; Masahiro Kishimoto; Kenichi Kume; Mariko Kuroda; Noriyuki Sasaki; Masaru Tsujimoto; 健一 久米; 紀幸 佐々木; 雅裕 岸本; 康剛 川並; 信行 平田; 純一 藤沢; 辻本 勝; 麻利子 黒田


Archive | 2016

Ship and stern shape having stern duct

康雄 一ノ瀬; Yasuo Ichinose; 良和 笠原; Yoshikazu Kasahara; 杏実 金子; Azumi Kaneko; 良平 深澤; Ryohei Fukasawa; 健一 久米; Kenichi Kume; 英幹 川島; Hideki Kawashima; 信晶 坂本; Nobuaki Sakamoto; 純一 藤沢; Junichi Fujisawa; 弘樹 大場; Hiroki Ohba; 大輔 若生; Daisuke Wako


Archive | 2016

Stern duct, stern attachment, method of designing stern duct, and ship equipped with stern duct

Hideki Kawashima; Nobuaki Sakamoto; Kenichi Kume; Junichi Fujisawa; Masahiro Kishimoto; Yasuo Ichinose; Yoshikazu Kasahara; Azumi Kaneko; Tatsuya Hamada; Daisuke Wako; Shotaro Uto; Motoki Araki; Munehiko Hinatsu; Yasutaka Kawanami


Journal of the Japan Society of Naval Architects and Ocean Engineers | 2016

Measurement of Added Resistance in Irregular Waves and Estimation of the Long-period Components

Mariko Kuroda; Ken Takagi; Masaru Tsujimoto; Junichi Fujisawa


Archive | 2014

Ship with small duct and method for assessing application of small duct on ship

Noriyuki Sasaki; Hideki Kawashima; Junichi Fujisawa; Kenichi Kume; Yasuo Ichinose


Archive | 2014

船尾用ダクト、船尾用付加物、船尾用ダクトの設計方法、及び船尾用ダクトを装備した船舶

英幹 川島; Hideki Kawashima; 信晶 坂本; Nobuaki Sakamoto; 健一 久米; Kenichi Kume; 純一 藤沢; Junichi Fujisawa; 雅裕 岸本; Masahiro Kishimoto; 康雄 一ノ瀬; Yasuo Ichinose; 良和 笠原; Yoshikazu Kasahara; 杏実 金子; Azumi Kaneko; 達也 濱田; Tatsuya Hamada; 大輔 若生; Daisuke Wako; 正太郎 宇都; Shotaro Uto; 元輝 荒木; Motoki Araki; 宗彦 日夏; Munehiko Hinatsu; 康剛 川並; Yasutaka Kawanami


Archive | 2012

Hélice équipée d'un petit carénage et navire

Noriyuki Sasaki; Hideki Kawashima; Junichi Fujisawa

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Yoshitaka Ukon

Ontario Ministry of Transportation

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Tatsuro Kudo

Ontario Ministry of Transportation

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Takanori Hino

Yokohama National University

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