On Measuring the Dropping Rate of Salmon Gill Nets by Means of Underwater Television Techniques

It is very important to measure the dropping rate of salmon gill nets in the high seas from the standpoint of gill net efficiency and resources problems. The measurements of the dropping rate of a salmon gill net of 25 tans (1 tan is 50 meters in length) were carried out four times during the fishin...

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Veröffentlicht in:	NIPPON SUISAN GAKKAISHI 1969/12/25, Vol.35(12), pp.1157-1166
Hauptverfasser:	ISHIDA, Masami, SANO, Noritatsu, MISHIMA, Seikichi, SAITO, Shoji
Format:	Artikel
Sprache:	eng ; jpn
Online-Zugang:	Volltext
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