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Edokko-1
Edokko-1 (江戸っ子1号 Edokko Ichigo) is a Japanese small-sized unmanned submersible developed by Edokko-1 Project Committee in 2013. On November 22, 2013, the submersible dived to a depth of 7,800 meters in the Japan Trench and captured the images of deep-sea fish using a 3D full hi-vision video camera.〔 The Edokko-1 Project Committee consists of five small- and medium-sized firms based in Tokyo and Chiba prefectures. The submersible was developed jointly by the Committee and a consortium of support organizations (including universities, research labs, private firms and volunteers).
==Development==
The concept of Edokko Ichigo originates from Yukio Sugino, the president of Sugino Rubber Chemical, Ltd., who was eager to start a new project in Tokyo to develop a device that can “reach deep-sea,” inspired by the successful launch of the “Maido Ichigo” satellite by East Osaka Craftmen Astro-Technology SOHLA in Osaka.〔〔 Although he initially planned to develop a probe that can dive to 11,000 meters, the plan turned out unfeasible.〔 JAMSTEC (Japan Agency for Marine-Earth Science and Technology) advised, at the request of President Sugino, that he could develop a probe using commercially available glass balls which free-falls to a depth of about 8,000 meters and returns to the surface by jettisoning a ballast weight. This advice constitutes the basis for the Edokko Ichigo submersible.〔 After the basic concept was formulated, the member firms of the Project Committee launched the development of constituent components. The members of the consortium, including the professors and students of universities and private companies, also contributed significantly to the development of control computers and telecommunication components. The Tokyo Higashi Shinkin Bank served as the secretariat for the project.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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