Platform net - Daiami

A type of net fishing gear. It belongs to the fixed net (tateami) category. It consists of two sections, a fish-catching section and a fence section, or three sections: a fish-catching section, an enclosure section, and a fence section, and is designed to immediately drop schools of fish guided by the fence section into the fish-catching section. Platform nets are classified into Oshiki nets and Daibo nets based on their structure. Oshiki nets have the oldest origins among the fixed nets, and there was the Southwestern Oshiki net that originated in Yamaguchi Prefecture, and the Hokuriku-style Daibo net that originated in Toyama Bay. The fish-catching section of the Oshiki net is triangular, and the apex of the triangle at the back is connected to a large float called a platform. One side of the triangular fish-catching section is open, making it easy for schools of fish to enter, but it also has the disadvantage of making it easy for them to escape. Not only Oshiki nets but Daibo nets are also disappearing.

[Yasuo Sasagawa and Teisuke Miura]

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

網漁具の一種。定置網（建(たて)網）類に属する。魚捕部と垣網部との2部、あるいは魚捕部、囲網(かこいあみ)部および垣網部の3部からなり、垣網によって誘導された魚群をただちに魚捕部に落とし入れる構造である。台網類はその構造上は大敷(おおしき)網類と大謀(だいぼう)網類に分類される。大敷網類は建網のうちではその起源がもっとも古く、山口県におこった西南系大敷網と、富山湾でおこった北陸系台網とがあった。大敷網類の魚捕部は三角形状で、奥部の三角の頂点は台とよぶ大浮子(あば)に連結されている。三角形状の魚捕部の一辺が開口しているため、魚群は入りやすい反面、出やすい欠点も持ち合わせている。大敷網類だけでなく大謀網も消滅しつつある。

［笹川康雄・三浦汀介］

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