沖合おきあい底引そこびもう漁業ぎょぎょうであれば
okiai sokobiki mō gyogyōdeareba

Noun
Da Copula

The "-eba" conditional form ("if/when…") of 沖合底引き網漁業

1. If/when bottom trawling ; If it were bottom trawling

Ba Conditional