Expanding net plate

Japanese: 拡網板 - かくもうばん
Expanding net plate

...When hauling a net, it is most efficient to haul it over as wide an area as possible, so the opening must be wide enough. There are several ways to do this. The first is to use a widening net, as in otter trawl and plank seine. The second is towed by two boats, and the second is to stretch a wooden or iron bar across the opening, or to attach a frame called a girder, as used in beam trawl and girder nets.

*Some of the terminology that refers to "spreading net board" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

… 網を引くに際しては,なるべく広い面積を引くのが効率がよいので,十分に網口を広げておく必要があるが,この開口の方法にいくつかある。まず拡網板を用いる方法で,オッタートロール,板引網などがこれにあたる。次は2隻の船で引く二艘(にそう)引き,網口に木や鉄の棒を渡す,あるいは桁と呼ばれる枠をつける方法はビームトロール,桁網に用いられる。…

※「拡網板」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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