Western bottom trawl fishing boat - Iseisokobikiamigyosen

...The voyage can last up to a year, with supplies in foreign lands, so the living conditions are good. (3) Motorized Bottom Trawler Fishing Vessels There are two types of motorized bottom trawlers: the western bottom trawlers, which pull the net with two boats, and the offshore bottom trawlers, which pull the net with one boat (the eastern bottom trawlers). The former are mainly in the 100-215 ton class, while the latter are less than 126 ton and there are many of them.

*Some of the terminology used to refer to "western trawl fishing vessels" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…外地での補給により航海日数が1年にも及ぶので，居住性はよい。(3)機船底引網漁船　2隻で網を引く以西底引網漁船と1隻で引く沖合底引網漁船(以東底引)とがある。前者は100～215トン級が主であり，後者は126トン未満で隻数が多い。…

※「以西底引網漁船」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