半个世纪以来,渔业发达的国家,对其海洋捕捞手段进行改革的同时,在渔船上大力发展了制冰、速冻、冷藏等保鲜加工设备,以及保鲜加工船、冷藏运输船的有机配套.使其捕捞到的鱼虾,在生产第一线迅速冷冻、加工,以保住鱼虾的完全鲜度,从而得到最好的经济价值.这是现代渔业的一个重要发展. For half a century, countries with developed fisheries have carried out reforms in their means of marine fishing while vigorously developing fresh-keeping processing equipment such as ice-making, quick-freezing and cold-keeping as well as organic processing of fresh-keeping processing ships and refrigerated transport ships on fishing vessels. Its fishing of fish and shrimp, in the production of the first line of rapid freezing, processing, in order to keep the freshness of fresh fish and shrimp, so as to get the best economic value.This is an important development of modern fisheries.