“以西底拖网渔业”(是指在东径128度30分以西东海及黄海作业的底拖网渔业)是长崎市的骨干渔业。然而近年来已处于崩毁的边缘。长崎市为了 “Western bottom trawl fishery” (bottom trawl fishery operating at the east and west of the Yellow Sea and the East Sea at 128 degrees 30 minutes) is a key fishery in Nagasaki City. However, it has been on the brink of collapse in recent years. Nagasaki city in order