概述山东省群众渔业近几年来在一些船型的部分拖网渔船上更换主机,加大主机功率。虽然加大主机功率后,渔船的经济收入有所增加,但多消耗了大量的能源,得不偿失,这是因为更换大功率主机的目的不是发展外海及远洋渔 Overview Shandong mass fisheries in recent years in some of the ship’s part of the trawler to replace the host, increase host power. Although the increase of main engine power, the fishing boat’s economic income has increased, but it consumes a large amount of energy, outweighs the loss, because the replacement of high-power mainframe is not aimed at the development of offshore and offshore fishing