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Articles

1969: Vol. XLVI, No. 1

A Device with Outriggers for Increasing Sounding Width

  • Kishimatsu Watanabe
Soumise
août 11, 2015
Publié-e
2015-06-29

Résumé

With the eventual object of enriching the national industrial economy Japan has worked out a nation-wide plan for the expansion of port accommodation and facilities, in order to relieve recent growing congestion in ports and harbours caused by great increases in marine transportation. As a consequence of the implementation of this plan there has arisen a need to publish the relevant nautical charts so as to keep the user informed of progress in harbour constructions. In order to issue these essential tools for the safe navigation of ships, accurate and timely hydrographic surveys are indispensable. To keep abreast of the progress in harbour construction, as well as the growth in the size of vessels, it is necessary to promote efficiency in hydrographic surveying by using more highly mechanized methods, and in this way to ensure greater safety in navigation. As one of the measures towards fulfilling these requirements the author designed and produced a device for increasing effective sounding width.